flatland_client_lib/

game.rs

use std::collections::{BTreeMap, HashMap, HashSet, VecDeque};
use std::time::{Duration, Instant};

use flatland_protocol::{
    AbilityCooldownHud, BlueprintView, BodySlot, BuildingView, CastProgressHud, CombatHud,
    CombatSlotHud, CombatTargetHud, DoorView, EntityId, EntityState, Intent, InteriorMapView,
    LifeState, NpcView, RotationPreset, Seq, SessionId, TerrainKindView, TerrainZoneView, Tick,
    ZPlatformView, ZTransitionView,
};

use crate::session::{PlayConnection, SessionEvent};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum CharacterSheetTab {
    #[default]
    Character,
    Ledger,
    Career,
}

impl CharacterSheetTab {
    pub fn cycle(self) -> Self {
        match self {
            Self::Character => Self::Ledger,
            Self::Ledger => Self::Career,
            Self::Career => Self::Character,
        }
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum LedgerPeriod {
    #[default]
    Day,
    Week,
    Month,
    Lifetime,
}

impl LedgerPeriod {
    pub fn label(self) -> &'static str {
        match self {
            Self::Day => "Day",
            Self::Week => "Week",
            Self::Month => "Month",
            Self::Lifetime => "All",
        }
    }

    pub fn cycle(self) -> Self {
        match self {
            Self::Day => Self::Week,
            Self::Week => Self::Month,
            Self::Month => Self::Lifetime,
            Self::Lifetime => Self::Day,
        }
    }

    pub fn from_digit(c: char) -> Option<Self> {
        match c {
            '1' => Some(Self::Day),
            '2' => Some(Self::Week),
            '3' => Some(Self::Month),
            '4' => Some(Self::Lifetime),
            _ => None,
        }
    }
}

/// Matches `flatland_sim::containers` prop keys (client does not depend on sim).
const KEY_TEMPLATE: &str = "container_key";
const PROPERTY_DEED_TEMPLATE: &str = "property_deed";
const PROP_LOCK_ID: &str = "lock_id";
const PROP_OPENS_LOCK_ID: &str = "opens_lock_id";
const PROP_OPENS_CONTAINER_NAME: &str = "opens_container_name";
const PROP_CUSTOM_NAME: &str = "custom_name";
const PROP_LOCKED: &str = "locked";

/// Local claim-mode footprint editor (plan 40) — SW corner + size in meters.
#[derive(Debug, Clone, PartialEq)]
pub struct ClaimModeState {
    pub zone_id: String,
    pub width_m: u32,
    pub height_m: u32,
    pub anchor_x: f32,
    pub anchor_y: f32,
}

/// Local relocate ghost for a placed chest/lodging (1×1 cell cursor).
#[derive(Debug, Clone, PartialEq)]
pub struct RelocateModeState {
    pub container_id: String,
    pub label: String,
    pub cursor_x: f32,
    pub cursor_y: f32,
}

fn stack_is_locked(stack: &flatland_protocol::ItemStack) -> bool {
    stack
        .props
        .get(PROP_LOCKED)
        .is_some_and(|v| v == "true" || v == "1")
}

const MAX_LOG_LINES: usize = 200;
const MAX_SHOP_TRADE_LOG_LINES: usize = 40;
const INTERACTION_RADIUS_M: f32 = 1.5;
const DOOR_INTERACTION_RADIUS_M: f32 = 3.5;
const QUEST_BOARD_INTERACTION_RADIUS_M: f32 = 3.0;
const HARVEST_CLIENT_TIMEOUT: Duration = Duration::from_secs(12);
/// Matches `assets/config/server-settings.yaml` default for batch-cap UI estimates.
const CRAFT_STAMINA_COST: f32 = 3.0;
/// Minimum time the workers-menu `step:` line holds a value before accepting a change.
const WORKER_STEP_HOLD: Duration = Duration::from_millis(1200);
/// Keep the last worker route error visible in the HUD after the server clears it.
const WORKER_ERROR_HOLD: Duration = Duration::from_secs(45);

/// Catalog hints synced from server `ItemStack` wire rows.
#[derive(Debug, Clone, Default)]
pub struct InventoryHint {
    pub display_name: String,
    pub category: String,
    pub base_mass: Option<f32>,
    pub base_volume: Option<f32>,
    pub capacity_volume: Option<f32>,
    pub stackable: bool,
    /// Market-hall list eligibility (from catalog enrichment).
    pub listable: bool,
}

/// One row in the loadout hotbar picker (ability or inventory consumable).
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct LoadoutHotbarChoice {
    /// Value sent via [`Intent::SetHotbarSlot`] (`ability_id` or `item:<template>`).
    pub binding: String,
    /// Display label (ability id, or "Carrot ×3").
    pub label: String,
    /// Optional meta badge (`weapon`, `use`, …).
    pub meta: Option<String>,
}

/// Rotation editor overlay mode (`plans/26` §C2.5).
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum RotationEditorMode {
    #[default]
    List,
    EditSequence,
    PickAbility,
    EditLabel,
}

/// Local rotation editor UI state (not persisted).
#[derive(Debug, Clone, Default)]
pub struct RotationEditorState {
    pub mode: RotationEditorMode,
    pub list_index: usize,
    pub ability_index: usize,
    pub picker_index: usize,
    pub draft: Option<RotationPreset>,
    pub label_buffer: String,
}

impl RotationEditorState {
    pub fn reset(&mut self) {
        *self = Self::default();
    }
}

/// Max distance (m) a placed chest can be browsed/moved-into from the inventory
/// UI. Mirrors `flatland_sim::interaction::CONTAINER_INTERACTION_RADIUS_M` so the
/// client only ever shows chests the server will actually let you use — this is
/// what makes a chest disappear from the menu as soon as you walk away.
pub const CONTAINER_RANGE_M: f32 = 3.0;

/// Broad section of the inventory browser a row belongs to (drives the grouped
/// "Worn" / "On you" / "Nearby chest" headers in the UI).
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum InventorySection {
    /// Inside a worn body-slot item (backpack, belt w/ clipped pouches, armor).
    Worn,
    /// Loose on your person — not worn, not inside a placed chest.
    Person,
    /// Inside a placed chest within reach.
    Nearby,
}

/// Top-level inventory browser tab (`b` menu).
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum InventoryTab {
    #[default]
    OnPerson,
    Nearby,
}

impl InventoryTab {
    pub fn label(self) -> &'static str {
        match self {
            Self::OnPerson => "On person",
            Self::Nearby => "Nearby storage",
        }
    }

    pub fn cycle(self, forward: bool) -> Self {
        match (self, forward) {
            (Self::OnPerson, true) | (Self::OnPerson, false) => Self::Nearby,
            (Self::Nearby, true) | (Self::Nearby, false) => Self::OnPerson,
        }
    }
}

/// Rows jumped by PageUp / PageDown in list UIs.
pub const LIST_PAGE_SIZE: usize = 10;

/// Case-insensitive substring match for list filters (name / template / label).
pub fn list_label_matches(haystack: &str, filter: &str) -> bool {
    if filter.is_empty() {
        return true;
    }
    haystack
        .to_ascii_lowercase()
        .contains(&filter.to_ascii_lowercase())
}

/// Clamp a list selection after a page jump (`pages` is typically ±1).
pub fn page_list_index(index: usize, pages: i32, len: usize) -> usize {
    if len == 0 {
        return 0;
    }
    let page = LIST_PAGE_SIZE as i32;
    let next = index as i32 + pages * page;
    next.clamp(0, (len as i32) - 1) as usize
}

/// Advance `index` by `delta` among indices where `pred` is true (wraps).
pub fn step_filtered_index(index: usize, delta: i32, len: usize, pred: impl Fn(usize) -> bool) -> usize {
    if len == 0 {
        return 0;
    }
    let matching: Vec<usize> = (0..len).filter(|&i| pred(i)).collect();
    if matching.is_empty() {
        return index.min(len - 1);
    }
    let pos = matching.iter().position(|&i| i == index).unwrap_or(0);
    let next = (pos as i32 + delta).rem_euclid(matching.len() as i32) as usize;
    matching[next]
}

/// Page among filtered indices (no wrap — clamp like [`page_list_index`]).
pub fn page_filtered_index(
    index: usize,
    pages: i32,
    len: usize,
    pred: impl Fn(usize) -> bool,
) -> usize {
    if len == 0 {
        return 0;
    }
    let matching: Vec<usize> = (0..len).filter(|&i| pred(i)).collect();
    if matching.is_empty() {
        return index.min(len - 1);
    }
    let pos = matching.iter().position(|&i| i == index).unwrap_or(0);
    let next = page_list_index(pos, pages, matching.len());
    matching[next]
}

/// Category group for On-person loose items (stable order).
pub fn inventory_category_group(category: &str) -> (&'static str, u8) {
    match category {
        "weapon" | "ammo" => ("Weapons", 0),
        "armor" | "shield" | "offhand" => ("Armor", 1),
        "consumable" => ("Consumables", 2),
        "resource" | "harvest_node" | "seed" => ("Resources", 3),
        "container" | "lodging" => ("Containers", 4),
        "currency" | "key" => ("Currency & keys", 5),
        "tool" | "misc" | "furniture" | "quest" | "document" => ("Gear & misc", 6),
        _ => ("Other", 7),
    }
}

/// Whether a template category is listable when the wire/hint omits an explicit flag.
pub fn category_default_listable(category: &str) -> bool {
    !matches!(
        category,
        "currency" | "harvest_node" | "key" | "quest" | "document" | "lodging"
    )
}

/// Parse a bank deposit/withdraw amount. Blank or `0` means "all" (server convention).
fn parse_bank_copper_amount(input: &str) -> Option<u64> {
    let s = input.trim();
    if s.is_empty() {
        return Some(0);
    }
    s.parse::<u64>().ok()
}

/// Parse a storage store/take/ship quantity. Blank or `0` means all (`None` intent qty).
fn parse_storage_quantity(input: &str) -> Option<Option<u32>> {
    let s = input.trim();
    if s.is_empty() || s == "0" {
        return Some(None);
    }
    let n = s.parse::<u32>().ok()?;
    if n == 0 {
        return Some(None);
    }
    Some(Some(n))
}

fn storage_stack_label(stack: &flatland_protocol::ItemStack) -> String {
    let name = stack
        .display_name
        .as_deref()
        .unwrap_or(stack.template_id.as_str());
    if stack.quantity > 1 {
        format!("{name} ×{}", stack.quantity)
    } else {
        name.to_string()
    }
}

/// Short display label for a body slot (`plans/08` §4.1) — shared by the inventory
/// browser section headers and the move-destination picker.
pub fn body_slot_label(slot: BodySlot) -> &'static str {
    match slot {
        BodySlot::Head => "Head",
        BodySlot::Chest => "Chest",
        BodySlot::Forearms => "Forearms",
        BodySlot::Legs => "Legs",
        BodySlot::Feet => "Feet",
        BodySlot::Cloak => "Cloak",
        BodySlot::Back => "Back",
        BodySlot::Waist => "Waist",
        BodySlot::Earrings => "Earrings",
        BodySlot::Necklace => "Necklace",
        BodySlot::Eyeglasses => "Eyeglasses",
        BodySlot::RingLeft1 => "Ring L1",
        BodySlot::RingLeft2 => "Ring L2",
        BodySlot::RingRight1 => "Ring R1",
        BodySlot::RingRight2 => "Ring R2",
    }
}

fn grant_target_matches_mode(stack: &flatland_protocol::ItemStack, mode: &str) -> bool {
    let cat = stack.category.as_deref().unwrap_or("");
    match mode {
        "while_equipped" => {
            stack.equip_slot.is_some()
                || cat == "weapon"
                || cat == "shield"
                || cat == "offhand"
                || cat == "armor"
        }
        _ => cat == "weapon" || cat == "ammo" || stack.props.contains_key("weapon_ability_id"),
    }
}

fn grant_tags_match(stack: &flatland_protocol::ItemStack, grant_tags: &[&str]) -> bool {
    if grant_tags.is_empty() {
        return true;
    }
    let target_tags: Vec<&str> = stack
        .props
        .get("allowed_enchant_tags")
        .map(|s| {
            s.split(',')
                .map(str::trim)
                .filter(|t| !t.is_empty())
                .collect()
        })
        .unwrap_or_default();
    if target_tags.is_empty() {
        return true;
    }
    grant_tags.iter().any(|t| target_tags.contains(t))
}

/// Default sim tick rate when the client has no settings (matches server-settings).
pub const DEFAULT_TICK_HZ: u32 = 30;

/// Human-readable remaining time for an item status binding.
pub fn format_binding_ttl(
    binding: &flatland_protocol::ItemStatusBinding,
    tick: u64,
    tick_hz: u32,
) -> String {
    let Some(expires) = binding.expires_at_tick else {
        return "permanent".into();
    };
    let hz = tick_hz.max(1) as f32;
    let remaining = expires.saturating_sub(tick) as f32 / hz;
    if remaining <= 0.0 {
        return "expired".into();
    }
    if remaining >= 120.0 {
        format!("{:.0}m left", remaining / 60.0)
    } else if remaining >= 10.0 {
        format!("{remaining:.0}s left")
    } else {
        format!("{remaining:.1}s left")
    }
}

pub fn format_binding_mode(mode: flatland_protocol::ItemStatusBindingMode) -> &'static str {
    match mode {
        flatland_protocol::ItemStatusBindingMode::OnHit => "on hit",
        flatland_protocol::ItemStatusBindingMode::WhileEquipped => "while equipped",
    }
}

/// Compact suffix for inventory / paperdoll rows, e.g. ` · fortify (while equipped, 58m left)`.
pub fn format_status_bindings_suffix(
    bindings: &[flatland_protocol::ItemStatusBinding],
    tick: u64,
    tick_hz: u32,
) -> String {
    if bindings.is_empty() {
        return String::new();
    }
    let parts: Vec<String> = bindings
        .iter()
        .map(|b| {
            format!(
                "{} ({}, {})",
                b.effect_id,
                format_binding_mode(b.mode),
                format_binding_ttl(b, tick, tick_hz)
            )
        })
        .collect();
    format!(" · {}", parts.join("; "))
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum EquipPaperdollRow {
    Body { slot: BodySlot, filled: bool },
    Mainhand { filled: bool },
    Offhand { filled: bool, locked: bool },
}

pub fn equip_paperdoll_rows(state: &GameState) -> Vec<EquipPaperdollRow> {
    let mut rows: Vec<EquipPaperdollRow> = BodySlot::ALL
        .iter()
        .map(|slot| EquipPaperdollRow::Body {
            slot: *slot,
            filled: state.worn.contains_key(slot),
        })
        .collect();
    let two_hand = state.mainhand_hand_slots >= 2;
    rows.push(EquipPaperdollRow::Mainhand {
        filled: state.mainhand_template_id.is_some(),
    });
    rows.push(EquipPaperdollRow::Offhand {
        filled: state.offhand_template_id.is_some(),
        locked: two_hand,
    });
    rows
}

fn first_inventory_for_slot(state: &GameState, slot: BodySlot) -> Option<uuid::Uuid> {
    for stack in &state.inventory_stacks {
        let matches = stack
            .equip_slot
            .map(|s| s == slot || (is_client_ring(s) && is_client_ring(slot)))
            .unwrap_or(false)
            || guess_body_slot(&stack.template_id) == Some(slot);
        if matches {
            return stack.item_instance_id;
        }
    }
    None
}

fn is_client_ring(slot: BodySlot) -> bool {
    matches!(
        slot,
        BodySlot::RingLeft1
            | BodySlot::RingLeft2
            | BodySlot::RingRight1
            | BodySlot::RingRight2
    )
}

fn first_inventory_weapon(state: &GameState) -> Option<String> {
    for stack in &state.inventory_stacks {
        if stack.category.as_deref() == Some("weapon") {
            return Some(stack.template_id.clone());
        }
    }
    None
}

fn first_inventory_offhand(state: &GameState) -> Option<String> {
    for stack in &state.inventory_stacks {
        let cat = stack.category.as_deref().unwrap_or("");
        if matches!(cat, "shield" | "offhand") {
            return Some(stack.template_id.clone());
        }
    }
    None
}

/// Client-side naming heuristic for "Enter equips this" — prefers catalog `equip_slot`
/// on the stack when present; otherwise guesses from `template_id`.
fn guess_body_slot(template_id: &str) -> Option<BodySlot> {
    if template_id.contains("backpack") {
        Some(BodySlot::Back)
    } else if template_id.contains("belt") {
        Some(BodySlot::Waist)
    } else if template_id.contains("cloak") || template_id.contains("cape") {
        Some(BodySlot::Cloak)
    } else if template_id.contains("cap")
        || template_id.contains("hat")
        || template_id.contains("helm")
    {
        Some(BodySlot::Head)
    } else if template_id.contains("shirt")
        || template_id.contains("robe")
        || template_id.contains("vest")
        || template_id.contains("chest")
        || template_id.contains("jerkin")
    {
        Some(BodySlot::Chest)
    } else if template_id.contains("sleeves")
        || template_id.contains("gloves")
        || template_id.contains("gauntlets")
    {
        Some(BodySlot::Forearms)
    } else if template_id.contains("pants") || template_id.contains("leggings") {
        Some(BodySlot::Legs)
    } else if template_id.contains("boots") || template_id.contains("shoes") {
        Some(BodySlot::Feet)
    } else if template_id.contains("earring") {
        Some(BodySlot::Earrings)
    } else if template_id.contains("necklace") || template_id.contains("amulet") {
        Some(BodySlot::Necklace)
    } else if template_id.contains("glass")
        || template_id.contains("spectacles")
        || template_id.contains("goggles")
    {
        Some(BodySlot::Eyeglasses)
    } else if template_id.contains("ring") {
        Some(BodySlot::RingLeft1)
    } else {
        None
    }
}

/// One row in the inventory browser tree.
#[derive(Debug, Clone)]
pub struct InventoryRow {
    pub depth: usize,
    pub stack: flatland_protocol::ItemStack,
    /// `MoveItem` source location for this stack.
    pub from: flatland_protocol::InventoryLocation,
    /// Parent container instance when nested (belt shell, backpack, chest, pouch).
    pub from_parent_instance_id: Option<uuid::Uuid>,
    /// Equipped bag/chest shell — unequip via Enter instead of the move picker.
    pub is_equip_shell: bool,
    /// Placed world chest shell — lock/unlock via Enter or `l`.
    pub is_chest_shell: bool,
    pub section: InventorySection,
}

/// Formatted inventory row text shared by TUI and gfx browsers.
#[derive(Debug, Clone)]
pub struct InventoryRowView {
    pub depth: usize,
    /// Dense single-line label (legacy / TUI).
    pub text: String,
    /// Primary label for redesigned gfx rows (name, qty, slot).
    pub title: String,
    pub mass_kg: Option<f32>,
    pub volume: Option<(f32, f32)>,
    /// Hover hint when multiple rows share the same visible identity (template + label + mods).
    pub instance_tooltip: Option<String>,
}

/// One line in the sectioned inventory browser (headers are non-selectable).
#[derive(Debug, Clone)]
pub enum InventoryBrowserLine {
    Section(String),
    SlotLabel(String),
    Hint(String),
    Blank,
    Item {
        selectable_index: usize,
        selected: bool,
        depth: usize,
        text: String,
        title: String,
        mass_kg: Option<f32>,
        volume: Option<(f32, f32)>,
        instance_tooltip: Option<String>,
    },
}

/// Bank teller panel focus (action list vs amount / transfer prompts).
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub enum BankUiMode {
    #[default]
    Menu,
    DepositAmount {
        input: String,
    },
    WithdrawAmount {
        input: String,
    },
    TransferName {
        input: String,
    },
    TransferAmount {
        to_name: String,
        input: String,
    },
}

/// Town storage manager focus (action list vs item pickers vs quantity).
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub enum StorageUiMode {
    #[default]
    Menu,
    /// Pick a loose on-person stack to store.
    StorePick {
        index: usize,
    },
    /// Quantity for a chosen store stack (blank/0 = all).
    StoreAmount {
        pick_index: usize,
        item_instance_id: uuid::Uuid,
        label: String,
        max_qty: u32,
        input: String,
    },
    /// Pick a vault stack to take.
    TakePick {
        index: usize,
    },
    /// Quantity for a chosen take stack (blank/0 = all).
    TakeAmount {
        pick_index: usize,
        item_instance_id: uuid::Uuid,
        label: String,
        max_qty: u32,
        input: String,
    },
    /// Pick a vault stack to ship to `dest_building_id`.
    ShipPick {
        dest_building_id: String,
        dest_label: String,
        index: usize,
    },
    /// Quantity for a chosen ship stack (blank/0 = all).
    ShipAmount {
        dest_building_id: String,
        dest_label: String,
        pick_index: usize,
        item_instance_id: uuid::Uuid,
        label: String,
        max_qty: u32,
        input: String,
    },
}

/// Where market list goods are taken from (`GoodsLocation` on submit).
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum MarketListSourceKind {
    Person,
    TownStorage { building_id: String },
}

/// Market hall clerk focus (browse vs list wizard).
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub enum MarketUiMode {
    #[default]
    Browse,
    /// Pick on-person vs an eligible town vault.
    ListSource {
        index: usize,
    },
    /// Pick a stack from the chosen source.
    ListPick {
        source: MarketListSourceKind,
        index: usize,
    },
    /// Quantity to list (blank/0 = all).
    ListAmount {
        source: MarketListSourceKind,
        pick_index: usize,
        item_instance_id: uuid::Uuid,
        label: String,
        max_qty: u32,
        input: String,
    },
    /// Choose Fixed copper vs NPC-price dump queue (`plans/53`).
    ListPricingMode {
        source: MarketListSourceKind,
        item_instance_id: uuid::Uuid,
        label: String,
        quantity: Option<u32>,
        max_qty: u32,
        /// 0 = NPC price, 1 = Fixed.
        index: usize,
    },
    /// Unit price in copper.
    ListPrice {
        source: MarketListSourceKind,
        item_instance_id: uuid::Uuid,
        label: String,
        /// Resolved quantity to list (`None` = all / omit on wire).
        quantity: Option<u32>,
        max_qty: u32,
        input: String,
    },
}

/// One selectable stack in a storage store/take/ship picker.
#[derive(Debug, Clone)]
pub struct StoragePickOption {
    pub item_instance_id: uuid::Uuid,
    pub label: String,
    pub quantity: u32,
    /// Catalog category when known (market list filters).
    pub category: String,
}

/// A placed chest within `CONTAINER_RANGE_M`, with its contents pre-flattened for
/// the browser (empty when locked without the matching key).
#[derive(Debug, Clone)]
pub struct NearbyContainer {
    pub view: flatland_protocol::PlacedContainerView,
    pub distance_m: f32,
    pub rows: Vec<InventoryRow>,
}

/// One key row in the keychain overlay (carried vs stowed).
#[derive(Debug, Clone)]
pub struct KeychainEntry {
    pub stack: flatland_protocol::ItemStack,
    pub stowed: bool,
}

/// A destination the currently-picked item could be moved to.
#[derive(Debug, Clone)]
pub struct MoveOption {
    pub label: String,
    pub kind: MoveOptionKind,
}

#[derive(Debug, Clone, PartialEq)]
pub enum MoveOptionKind {
    Move {
        location: flatland_protocol::InventoryLocation,
        parent_instance_id: Option<uuid::Uuid>,
    },
    /// Pick up a placed chest/crate; optionally nest into a worn bag afterward.
    PickupPlaced {
        container_id: String,
        nest_location: flatland_protocol::InventoryLocation,
        nest_parent_instance_id: Option<uuid::Uuid>,
    },
    /// Enter map relocate mode for a placed chest (no pickup).
    RelocatePlaced {
        container_id: String,
    },
    /// Eat/drink a loose consumable (one unit per use).
    Use,
    /// Open grant-target picker for `grants_item_status` consumables.
    GrantApply,
    Drop,
    /// Sell the plot tied to a property deed back to the crown.
    SellPlotToCrown {
        plot_id: uuid::Uuid,
    },
    Cancel,
}

/// One navigable row in the deed farm-access panel.
#[derive(Debug, Clone, PartialEq)]
pub enum FarmAccessRow {
    PublicToggle,
    PublicDiscount,
    AllowRemove {
        character_id: uuid::Uuid,
        label: String,
        tax_discount_bps: u32,
    },
    NearbyAdd {
        name: String,
    },
}

/// Active "apply grant onto…" picker (fortify oil, frost edge scroll, …).
#[derive(Debug, Clone)]
pub struct GrantTargetPicker {
    pub grant_instance_id: uuid::Uuid,
    pub grant_label: String,
    pub effect_id: String,
    pub mode: String,
    pub options: Vec<GrantTargetOption>,
    pub filter: String,
    pub filter_focused: bool,
}

#[derive(Debug, Clone)]
pub struct GrantTargetOption {
    pub label: String,
    pub target_instance_id: uuid::Uuid,
}

/// Active "move to…" destination picker state for the selected inventory item.
#[derive(Debug, Clone)]
pub struct MovePicker {
    pub item_instance_id: uuid::Uuid,
    pub from: flatland_protocol::InventoryLocation,
    pub item_label: String,
    pub template_id: String,
    pub stack_quantity: u32,
    pub quantity: u32,
    pub options: Vec<MoveOption>,
    pub filter: String,
    pub filter_focused: bool,
}

/// Active permanent-delete picker for the selected inventory item.
#[derive(Debug, Clone)]
pub struct DestroyPicker {
    pub item_instance_id: uuid::Uuid,
    pub from: flatland_protocol::InventoryLocation,
    pub item_label: String,
    pub stack_quantity: u32,
    pub quantity: u32,
}

/// One giveable stack in the workers-menu give picker.
#[derive(Debug, Clone)]
pub struct WorkerGiveOption {
    pub item_instance_id: uuid::Uuid,
    pub label: String,
    pub quantity: u32,
    pub template_id: String,
}

/// Give an on-person inventory stack to the selected hired worker.
#[derive(Debug, Clone)]
pub struct WorkerGivePicker {
    pub worker_instance_id: String,
    pub worker_label: String,
    pub options: Vec<WorkerGiveOption>,
}

/// Nearby hired worker choice when giving a selected inventory stack (`g`).
#[derive(Debug, Clone)]
pub struct WorkerGiveTargetOption {
    pub instance_id: String,
    pub label: String,
    pub distance_m: f32,
}

/// Pick which nearby worker receives the selected inventory item.
#[derive(Debug, Clone)]
pub struct WorkerGiveTargetPicker {
    pub item_instance_id: uuid::Uuid,
    pub item_label: String,
    pub quantity: Option<u32>,
    pub options: Vec<WorkerGiveTargetOption>,
}

/// Take an item from a hired worker back into the employer's inventory.
#[derive(Debug, Clone)]
pub struct WorkerTakePicker {
    pub worker_instance_id: String,
    pub worker_label: String,
    pub options: Vec<WorkerGiveOption>,
    /// How many of the selected stack to take (1..=stack quantity).
    pub quantity: u32,
}

/// Max distance (m) to hand an item to a hired worker.
pub const WORKER_GIVE_RANGE_M: f32 = 4.0;

/// One teachable blueprint in the workers-menu teach picker.
#[derive(Debug, Clone)]
pub struct WorkerTeachOption {
    pub blueprint_id: String,
    pub label: String,
    pub cost_copper: u64,
    pub min_level: u32,
    pub worker_level: u32,
    pub can_afford: bool,
    pub level_ok: bool,
}

/// Teach a known blueprint to the selected hired worker.
#[derive(Debug, Clone)]
pub struct WorkerTeachPicker {
    pub worker_instance_id: String,
    pub worker_label: String,
    pub worker_level: u32,
    pub options: Vec<WorkerTeachOption>,
}

/// Sticky workers-menu step line — holds a coarse label so travel/harvest ticks
/// do not thrash the UI.
#[derive(Debug, Clone, Default)]
pub struct StickyWorkerStep {
    shown: String,
    pending: String,
    pending_since: Option<Instant>,
}

impl StickyWorkerStep {
    fn from_label(label: String) -> Self {
        Self {
            shown: label.clone(),
            pending: label,
            pending_since: Some(Instant::now()),
        }
    }

    fn observe(&mut self, label: &str, now: Instant) {
        let pending_since = self.pending_since.unwrap_or(now);
        if label == self.pending {
            if self.shown != self.pending && now.duration_since(pending_since) >= WORKER_STEP_HOLD
            {
                self.shown = self.pending.clone();
            }
            return;
        }
        self.pending = label.to_string();
        self.pending_since = Some(now);
        // Empty → first value, or first observation: show immediately.
        if self.shown.is_empty() {
            self.shown = self.pending.clone();
        }
    }
}

/// Last non-transient worker error — held so route flicker stays readable.
/// Path→lodging recoveries are log-only (`worker_error_is_hud_noise`) and not held.
#[derive(Debug, Clone, Default)]
pub struct StickyWorkerError {
    message: String,
    last_seen: Option<Instant>,
}

impl StickyWorkerError {
    fn observe(&mut self, err: Option<&str>, now: Instant) {
        if let Some(e) = err {
            if !worker_error_is_transient(e) && !worker_error_is_hud_noise(e) {
                self.message = e.to_string();
                self.last_seen = Some(now);
            }
            return;
        }
        if let Some(seen) = self.last_seen {
            if now.duration_since(seen) > WORKER_ERROR_HOLD {
                self.message.clear();
                self.last_seen = None;
            }
        }
    }

    pub fn shown(&self, now: Instant) -> Option<&str> {
        if self.message.is_empty() {
            return None;
        }
        let seen = self.last_seen?;
        if now.duration_since(seen) > WORKER_ERROR_HOLD {
            return None;
        }
        Some(self.message.as_str())
    }
}

/// First non-transient worker issue for the status bar (strike, route error, etc.).
/// Routine recovery noise (path failures → lodging) stays in the game log only.
pub fn worker_attention_line(state: &GameState) -> Option<String> {
    use flatland_protocol::WorkerStateView;
    let now = Instant::now();
    for w in &state.hired_workers {
        if matches!(w.state, WorkerStateView::Strike) {
            return Some(format!(
                "Worker {}: on strike — fund bank, pay wages, or stock lodging chest",
                w.label
            ));
        }
        if let Some(err) = state
            .worker_error_display
            .get(&w.instance_id)
            .and_then(|s| s.shown(now))
        {
            if !worker_error_is_hud_noise(err) {
                return Some(format!("Worker {}: {err}", w.label));
            }
        }
        if let Some(err) = &w.last_error {
            if !worker_error_is_transient(err) && !worker_error_is_hud_noise(err) {
                return Some(format!("Worker {}: {err}", w.label));
            }
        }
    }
    None
}

/// True when a worker `last_error` is transient noise (soft-skip chatter).
pub fn worker_error_is_transient(err: &str) -> bool {
    let e = err.to_ascii_lowercase();
    e.contains("continuing route")
        || e.contains("storage full")
        || e.starts_with("nothing to withdraw")
}

/// True for routine worker recoveries that should not paint the status bar.
/// Still logged when they change (see [`GameState::apply_hired_workers`]).
pub fn worker_error_is_hud_noise(err: &str) -> bool {
    let e = err.to_ascii_lowercase();
    e.contains("returned to lodging after path")
        || e.contains("path failure")
        || e.contains("no path to")
        || e.contains("pathfinding")
        // Soft stuck recovery — worker keeps working / replans; not a player action item.
        || e.contains("repathing")
        || e.contains("nudged clear")
}

/// In-flight `SetWorkerJob` waiting for IntentAck (or a reject Interaction).
#[derive(Debug, Clone)]
pub struct PendingWorkerJobAck {
    pub seq: u32,
    pub worker_instance_id: String,
    pub worker_label: String,
    pub idle: bool,
    pub stop_count: usize,
    pub prev_route: Option<flatland_protocol::WorkerRouteView>,
    pub prev_mode: flatland_protocol::WorkerModeView,
    pub prev_step_label: String,
    pub prev_last_error: Option<String>,
}

fn push_inventory_rows(
    rows: &mut Vec<InventoryRow>,
    depth: usize,
    stack: &flatland_protocol::ItemStack,
    from: &flatland_protocol::InventoryLocation,
    from_parent_instance_id: Option<uuid::Uuid>,
    section: InventorySection,
) {
    push_inventory_rows_filtered(
        rows,
        depth,
        stack,
        from,
        from_parent_instance_id,
        section,
        "",
    );
}

fn stack_matches_filter(stack: &flatland_protocol::ItemStack, filter: &str) -> bool {
    if filter.is_empty() {
        return true;
    }
    let f = filter.to_ascii_lowercase();
    let name = stack
        .display_name
        .as_deref()
        .unwrap_or("")
        .to_ascii_lowercase();
    let tid = stack.template_id.to_ascii_lowercase();
    name.contains(&f)
        || tid.contains(&f)
        || stack
            .contents
            .iter()
            .any(|c| stack_matches_filter(c, filter))
}

fn push_inventory_rows_filtered(
    rows: &mut Vec<InventoryRow>,
    depth: usize,
    stack: &flatland_protocol::ItemStack,
    from: &flatland_protocol::InventoryLocation,
    from_parent_instance_id: Option<uuid::Uuid>,
    section: InventorySection,
    filter: &str,
) {
    if !filter.is_empty() && !stack_matches_filter(stack, filter) {
        return;
    }
    let self_hit = filter.is_empty() || {
        let f = filter.to_ascii_lowercase();
        let name = stack
            .display_name
            .as_deref()
            .unwrap_or("")
            .to_ascii_lowercase();
        let tid = stack.template_id.to_ascii_lowercase();
        name.contains(&f) || tid.contains(&f)
    };
    rows.push(InventoryRow {
        depth,
        stack: stack.clone(),
        from: from.clone(),
        from_parent_instance_id,
        is_equip_shell: false,
        is_chest_shell: false,
        section,
    });
    for child in &stack.contents {
        if self_hit || filter.is_empty() || stack_matches_filter(child, filter) {
            push_inventory_rows_filtered(
                rows,
                depth + 1,
                child,
                from,
                stack.item_instance_id,
                section,
                if self_hit { "" } else { filter },
            );
        }
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum ShopTab {
    #[default]
    Buy,
    Sell,
}

#[derive(Debug, Clone)]
pub struct NpcChatState {
    pub npc_id: String,
    pub npc_label: String,
    pub lines: Vec<String>,
    pub input: String,
    pub pending: bool,
    pub talk_depth: flatland_protocol::NpcTalkDepth,
    pub trade_allowed: bool,
    pub banner: Option<String>,
}

impl Default for NpcChatState {
    fn default() -> Self {
        Self {
            npc_id: String::new(),
            npc_label: String::new(),
            lines: Vec::new(),
            input: String::new(),
            pending: false,
            talk_depth: flatland_protocol::NpcTalkDepth::Full,
            trade_allowed: true,
            banner: None,
        }
    }
}

#[derive(Debug, Clone)]
pub struct GameState {
    pub session_id: SessionId,
    pub entity_id: EntityId,
    /// Logged-in character — used to show owner-only container labels.
    pub character_id: Option<uuid::Uuid>,
    pub tick: Tick,
    pub chunk_rev: u64,
    pub content_rev: u64,
    pub publish_rev: u64,
    pub entities: Vec<EntityState>,
    pub player: Option<EntityState>,
    pub resource_nodes: Vec<flatland_protocol::ResourceNodeView>,
    pub ground_drops: Vec<flatland_protocol::GroundDropView>,
    pub placed_containers: Vec<flatland_protocol::PlacedContainerView>,
    pub buildings: Vec<BuildingView>,
    pub doors: Vec<DoorView>,
    pub interior_map: Option<InteriorMapView>,
    pub npcs: Vec<NpcView>,
    pub blueprints: Vec<BlueprintView>,
    /// Wall/roof packs for the B plot-build menu.
    pub building_materials: Vec<flatland_protocol::BuildingMaterialView>,
    /// Outdoor play AABB origin (meters).
    pub world_x0: f32,
    pub world_y0: f32,
    pub world_width_m: f32,
    pub world_height_m: f32,
    pub terrain_zones: Vec<TerrainZoneView>,
    pub z_platforms: Vec<ZPlatformView>,
    pub z_transitions: Vec<ZTransitionView>,
    /// Outdoor z-bands saved before an interior overwrite; restored when leaving.
    /// Tick deltas never refresh `z_platforms`, so without this, interior platforms stick.
    #[doc(hidden)]
    pub z_bands_outdoor_backup: Option<(Vec<ZPlatformView>, Vec<ZTransitionView>)>,
    pub world_clock: flatland_protocol::WorldClock,
    pub inventory: std::collections::HashMap<String, u32>,
    pub inventory_hints: std::collections::HashMap<String, InventoryHint>,
    pub logs: VecDeque<String>,
    pub intents_sent: u64,
    pub ticks_received: u64,
    pub connected: bool,
    pub disconnect_reason: Option<String>,
    pub show_stats: bool,
    /// When true, the bottom system LOG dock is collapsed (sidebar gains the space).
    pub hud_log_hidden: bool,
    pub show_equip_menu: bool,
    pub equip_menu_index: usize,
    pub show_craft_menu: bool,
    pub craft_menu_index: usize,
    /// How many timed crafts to queue when confirming the craft menu.
    pub craft_batch_quantity: u32,
    /// B — wall/roof material picker for plot buildings.
    pub show_plot_build_menu: bool,
    /// True = navigate walls; false = navigate roofs (Tab switches).
    pub plot_build_focus_wall: bool,
    pub plot_build_wall_index: usize,
    pub plot_build_roof_index: usize,
    pub show_shop_menu: bool,
    pub shop_catalog: Option<flatland_protocol::ShopCatalog>,
    pub bank_panel: Option<flatland_protocol::BankPanel>,
    pub bank_menu_index: usize,
    pub bank_ui_mode: BankUiMode,
    pub storage_panel: Option<flatland_protocol::StoragePanel>,
    pub market_panel: Option<flatland_protocol::MarketPanel>,
    /// Selected row among filtered market browse listings.
    pub market_menu_index: usize,
    /// Browse / list-pick text filter (`/` to focus).
    pub market_filter: String,
    pub market_filter_focused: bool,
    /// Category group filter (`None` = All). Values match [`inventory_category_group`] labels.
    pub market_category_filter: Option<&'static str>,
    /// Pending buy confirm: (listing_id, qty, unit_price, line_total, display_name).
    pub market_buy_confirm: Option<(uuid::Uuid, u32, u64, u64, String)>,
    pub market_ui_mode: MarketUiMode,
    pub storage_menu_index: usize,
    pub storage_ui_mode: StorageUiMode,
    pub shop_tab: ShopTab,
    pub shop_menu_index: usize,
    pub shop_quantity: u32,
    /// Recent buy/sell lines while the shop panel is open (gfx dock).
    pub shop_trade_log: VecDeque<String>,
    pub show_npc_verb_menu: bool,
    pub npc_verb_target: Option<String>,
    pub npc_verb_index: usize,
    /// Nearby player Speak / Whisper / Trade dock.
    pub player_verbs: crate::social::PlayerVerbState,
    pub social_chat: crate::social::SocialChatState,
    pub trade_ui: crate::social::TradeUiState,
    pub whisper_pouch_ui: crate::social::WhisperPouchUi,
    pub show_npc_chat: bool,
    pub npc_chat: Option<NpcChatState>,
    pub show_inventory_menu: bool,
    pub inventory_menu_index: usize,
    pub inventory_tab: InventoryTab,
    pub inventory_filter: String,
    pub inventory_filter_focused: bool,
    pub show_move_picker: bool,
    pub move_picker_index: usize,
    pub move_picker: Option<MovePicker>,
    pub show_grant_picker: bool,
    pub grant_picker_index: usize,
    pub grant_picker: Option<GrantTargetPicker>,
    pub show_destroy_picker: bool,
    pub destroy_confirm_pending: bool,
    pub destroy_picker: Option<DestroyPicker>,
    /// Rename prompt for a selected container (`n` in inventory).
    pub show_rename_prompt: bool,
    /// Rename prompt for a hired worker (`n` in workers menu).
    pub show_worker_rename: bool,
    pub rename_buffer: String,
    /// Slot-1 combat target (mirrors server after SetTarget).
    pub combat_target: Option<EntityId>,
    pub combat_target_label: Option<String>,
    /// Local free-aim ground target (world meters) set via Shift+click on open ground.
    /// Used as `Intent::Cast.target_point` for ground/either aim-mode abilities.
    pub ground_target: Option<(f32, f32, f32)>,
    /// Active combat footprints from the server (`plans/39`).
    pub combat_fx: Vec<flatland_protocol::CombatFx>,
    /// Authored crown property zones (claimable land) — plan 40.
    pub property_zones: Vec<flatland_protocol::PropertyZoneView>,
    /// Tax overlays for claim cost premium preview.
    pub tax_zones: Vec<flatland_protocol::TaxZoneView>,
    /// Growth / fertility overlays (farming, respawn).
    pub growth_zones: Vec<flatland_protocol::GrowthZoneView>,
    /// Climate / biome overlays.
    pub biome_zones: Vec<flatland_protocol::BiomeZoneView>,
    /// Terrain kind speeds / impassable flags for auto-nav (from content).
    pub terrain_kind_nav: Vec<flatland_protocol::TerrainKindNavView>,
    /// Claimed property plots near the observer.
    pub property_plots: Vec<flatland_protocol::PropertyPlotView>,
    /// Server knobs for client-side claim quotes.
    pub property_plot_settings: Option<flatland_protocol::PropertyPlotSettingsView>,
    /// Local claim-footprint editor (not server state).
    pub claim_mode: Option<ClaimModeState>,
    /// Local relocate ghost for a placed chest/lodging (not server state).
    pub relocate_mode: Option<RelocateModeState>,
    /// Second `f` within a short window confirms selling this plot back to the crown.
    pub sell_plot_confirm: Option<uuid::Uuid>,
    /// When `sell_plot_confirm` was armed (for double-tap window).
    pub sell_plot_armed_at: Option<Instant>,
    /// Choose seed type when planting on owned tilled soil (`f`).
    pub show_plant_menu: bool,
    pub plant_menu_index: usize,
    /// Deed-holder farm access panel (public toggle + allow-list).
    pub show_farm_access: bool,
    /// Draft name for adding a tenant from the farm-access panel.
    pub farm_access_name_draft: String,
    /// Public / grant discount draft (bps) while editing farm access.
    pub farm_access_discount_bps: u32,
    /// Selected row in the farm-access panel (0 = public toggle).
    pub farm_access_index: usize,
    pub plant_quantity: u32,
    pub in_combat: bool,
    pub auto_attack: bool,
    pub combat_has_los: bool,
    pub attack_cd_ticks: u64,
    pub gcd_ticks: u64,
    pub weapon_ability_id: String,
    pub mainhand_template_id: Option<String>,
    pub mainhand_label: Option<String>,
    pub mainhand_instance_id: Option<uuid::Uuid>,
    pub offhand_template_id: Option<String>,
    pub offhand_label: Option<String>,
    pub offhand_instance_id: Option<uuid::Uuid>,
    pub mainhand_hand_slots: u8,
    pub defense: Option<flatland_protocol::DefenseHud>,
    /// Worn body-slot items — armor, cloak, jewelry, backpack, belt.
    pub worn: BTreeMap<BodySlot, flatland_protocol::ItemStack>,
    pub carry_mass: f32,
    pub carry_mass_max: f32,
    pub encumbrance: flatland_protocol::EncumbranceState,
    /// Full nested inventory stacks from the server (root only; worn are separate).
    pub inventory_stacks: Vec<flatland_protocol::ItemStack>,
    /// Keys stowed on the virtual keychain (zero carry mass).
    pub keychain_stacks: Vec<flatland_protocol::ItemStack>,
    /// Whisper stones in the pouch (zero carry mass).
    pub whisper_pouch_stacks: Vec<flatland_protocol::ItemStack>,
    /// Active status effects on the local player (buff/debuff strip).
    pub statuses: Vec<flatland_protocol::StatusEffectHud>,
    pub combat_target_detail: Option<CombatTargetHud>,
    pub cast_progress: Option<CastProgressHud>,
    /// Till / plant / other non-combat timed channels on the local player.
    pub timed_channel: Option<flatland_protocol::TimedChannelHud>,
    /// Owned plot underfoot offer (pad + storage pool) for the B menu.
    pub plot_build_offer: Option<flatland_protocol::PlotBuildOfferHud>,
    pub ability_cooldowns: Vec<AbilityCooldownHud>,
    pub blocking_active: bool,
    pub max_target_slots: u8,
    pub combat_slots: Vec<CombatSlotHud>,
    pub rotation_presets: Vec<RotationPreset>,
    /// Learned abilities from combat HUD (usable casts).
    pub known_abilities: Vec<String>,
    /// Aim / blast metadata for known abilities (ground cast UX), keyed by ability id.
    pub ability_meta: std::collections::HashMap<String, flatland_protocol::AbilityMetaHud>,
    /// Per-ability mastery from combat HUD (tier / XP).
    pub ability_mastery: std::collections::HashMap<String, flatland_protocol::AbilityMasteryHud>,
    /// Server-persisted hotbar bindings (index 0 = key 1).
    pub hotbar: Vec<Option<String>>,
    /// Max abilities allowed in one rotation (mind score).
    pub max_abilities_per_rotation: u8,
    pub show_loadout_menu: bool,
    pub show_keychain_menu: bool,
    pub keychain_menu_index: usize,
    pub show_rotation_editor: bool,
    /// Selected rotation preset in the loadout menu.
    pub loadout_menu_index: usize,
    /// Selected hotbar slot (`1`–`9`) for bind/clear in the loadout menu.
    pub loadout_hotbar_slot: u8,
    /// Selected known-ability row in the loadout menu.
    pub loadout_ability_index: usize,
    /// When true, ↑/↓ navigate presets; when false, navigate known abilities.
    pub loadout_focus_presets: bool,
    pub rotation_editor: RotationEditorState,
    /// True after a harvest intent is accepted until result/reject/disconnect.
    pub harvest_in_progress: bool,
    /// Wall-clock start of the current harvest; clears stale client state on timeout.
    pub harvest_started_at: Option<Instant>,
    /// Craft log deferred until the server acks the craft intent.
    pub pending_craft_ack: Option<(u32, String, u32)>,
    pub quest_log: Vec<flatland_protocol::QuestLogEntry>,
    pub interactables: Vec<flatland_protocol::InteractableView>,
    pub ledger: Option<flatland_protocol::PlayerLedgerView>,
    pub career: Option<flatland_protocol::PlayerCareerView>,
    pub character_sheet_tab: CharacterSheetTab,
    pub ledger_period: LedgerPeriod,
    pub show_quest_offer: bool,
    pub pending_quest_offer: Option<flatland_protocol::QuestOffer>,
    pub show_quest_menu: bool,
    pub quest_menu_index: usize,
    pub quest_withdraw_confirm: bool,
    pub hired_workers: Vec<flatland_protocol::HiredWorkerView>,
    pub show_workers_menu: bool,
    pub workers_menu_index: usize,
    /// Workers panel: one-line rows instead of full cards (more on screen).
    pub workers_menu_compact: bool,
    /// Coarse `step:` line held per worker so AOI ticks cannot thrash the menu.
    /// Public so out-of-crate tests can construct [`GameState`].
    pub worker_step_display: BTreeMap<String, StickyWorkerStep>,
    /// Held worker route errors (readable when server clears `last_error` each tick).
    pub worker_error_display: BTreeMap<String, StickyWorkerError>,
    /// Give-item sheet opened from the workers menu (`g`) — pick which item to give.
    pub show_worker_give_picker: bool,
    pub worker_give_picker_index: usize,
    pub worker_give_picker: Option<WorkerGivePicker>,
    /// Inventory `g` — pick which nearby worker receives the selected stack.
    pub show_worker_give_target_picker: bool,
    pub worker_give_target_picker_index: usize,
    pub worker_give_target_picker: Option<WorkerGiveTargetPicker>,
    /// Take-item sheet opened from the workers menu (`i`) — pick which worker stack to take.
    pub show_worker_take_picker: bool,
    pub worker_take_picker_index: usize,
    pub worker_take_picker: Option<WorkerTakePicker>,
    /// Teach-blueprint sheet opened from the workers menu (`t`).
    pub show_worker_teach_picker: bool,
    pub worker_teach_picker_index: usize,
    pub worker_teach_picker: Option<WorkerTeachPicker>,
    /// Active harvest-route editor (`h` → `e` on a worker).
    pub worker_route_editor: Option<crate::worker_route_editor::WorkerRouteEditorState>,
    /// Awaiting IntentAck for the last route save (`SetWorkerJob`).
    pub pending_worker_job_ack: Option<PendingWorkerJobAck>,
    /// Worker currently paused via `AttendHiredWorker` (opened with `f`).
    pub attending_worker_instance_id: Option<String>,
    /// Server progression curve from the latest combat HUD (matches server-settings.yaml).
    pub progression_curve: Option<flatland_protocol::ProgressionCurve>,
}

impl GameState {
    pub fn push_log(&mut self, line: impl Into<String>) {
        self.logs.push_back(line.into());
        while self.logs.len() > MAX_LOG_LINES {
            self.logs.pop_front();
        }
    }

    pub fn push_shop_trade_log(&mut self, line: impl Into<String>) {
        self.shop_trade_log.push_back(line.into());
        while self.shop_trade_log.len() > MAX_SHOP_TRADE_LOG_LINES {
            self.shop_trade_log.pop_front();
        }
    }

    pub fn clear_shop_trade_log(&mut self) {
        self.shop_trade_log.clear();
    }

    fn record_shop_trade_notice(&mut self, notice: &flatland_protocol::InteractionNotice) {
        if !self.show_shop_menu {
            return;
        }
        let msg = notice.message.trim();
        if msg.is_empty() {
            return;
        }
        if notice.coins_delta != 0
            || msg.starts_with("Bought ")
            || msg.starts_with("Sold ")
            || msg.contains("taught you how to craft")
            || msg.starts_with("need ")
        {
            self.push_shop_trade_log(msg);
        }
    }

    pub fn is_alive(&self) -> bool {
        self.player
            .as_ref()
            .and_then(|p| p.vitals)
            .map(|v| v.life_state == LifeState::Alive && v.health > 0.0)
            .unwrap_or(true)
    }

    /// Verb menu entries for the current `npc_verb_target`.
    pub fn npc_verb_options(&self) -> Vec<&'static str> {
        let Some(ref id) = self.npc_verb_target else {
            return vec![];
        };
        let Some(npc) = self.npcs.iter().find(|n| &n.id == id) else {
            return vec!["Talk"];
        };
        let role = npc.role.as_str();
        if Self::npc_role_is_bank(role) {
            return vec!["Bank", "Talk"];
        }
        if Self::npc_role_is_storage(role) {
            return vec!["Storage", "Talk"];
        }
        if Self::npc_role_is_market(role) {
            return vec!["Market", "Talk"];
        }
        if npc.can_trade || Self::npc_role_can_trade(role) {
            vec!["Talk", "Trade"]
        } else {
            vec!["Talk"]
        }
    }

    fn npc_role_can_trade(role: &str) -> bool {
        matches!(role, "broker" | "cook" | "farmer" | "merchant")
    }

    fn npc_role_is_bank(role: &str) -> bool {
        role.eq_ignore_ascii_case("bank_teller") || role.eq_ignore_ascii_case("banker")
    }

    fn npc_role_is_storage(role: &str) -> bool {
        role.eq_ignore_ascii_case("storage_manager")
    }

    fn npc_role_is_market(role: &str) -> bool {
        role.eq_ignore_ascii_case("market_clerk")
    }

    pub fn bank_menu_options(&self) -> Vec<&'static str> {
        vec![
            "Deposit…",
            "Withdraw…",
            "Deposit all",
            "Withdraw all",
            "Transfer…",
        ]
    }

    pub fn storage_menu_options(&self) -> Vec<String> {
        let mut opts = vec!["Store…".into(), "Take…".into()];
        if let Some(panel) = &self.storage_panel {
            for dest in &panel.ship_destinations {
                opts.push(format!(
                    "Ship → {} ({} cp / {} ticks)",
                    dest.label, dest.fee_copper, dest.travel_ticks
                ));
            }
        }
        opts
    }

    /// Loose on-person stacks eligible for town-storage store.
    /// Excludes hand-equipped weapons/tools (unequip first) — worn body gear is
    /// already outside root inventory.
    pub fn storage_store_options(&self) -> Vec<StoragePickOption> {
        let equipped = self.hand_equipped_instance_ids();
        self.person_rows()
            .into_iter()
            .filter(|r| r.depth == 0)
            .filter_map(|r| {
                let id = r.stack.item_instance_id?;
                if equipped.contains(&id) {
                    return None;
                }
                Some(StoragePickOption {
                    item_instance_id: id,
                    label: storage_stack_label(&r.stack),
                    quantity: r.stack.quantity,
                    category: r.stack.category.clone().unwrap_or_default(),
                })
            })
            .collect()
    }

    /// Instance ids currently occupying mainhand / offhand (for store / list filters).
    pub fn hand_equipped_instance_ids(&self) -> std::collections::HashSet<uuid::Uuid> {
        let mut ids = std::collections::HashSet::new();
        if let Some(id) = self.mainhand_instance_id {
            ids.insert(id);
        } else if let Some(tid) = &self.mainhand_template_id {
            if let Some(id) = self
                .inventory_stacks
                .iter()
                .find(|s| &s.template_id == tid)
                .and_then(|s| s.item_instance_id)
            {
                ids.insert(id);
            }
        }
        if let Some(id) = self.offhand_instance_id {
            ids.insert(id);
        } else if let Some(tid) = &self.offhand_template_id {
            if let Some(id) = self
                .inventory_stacks
                .iter()
                .find(|s| {
                    &s.template_id == tid
                        && s.item_instance_id
                            .is_some_and(|iid| !ids.contains(&iid))
                })
                .and_then(|s| s.item_instance_id)
            {
                ids.insert(id);
            }
        }
        ids
    }

    /// Vault stacks eligible for take / ship.
    pub fn storage_vault_options(&self) -> Vec<StoragePickOption> {
        let Some(panel) = &self.storage_panel else {
            return Vec::new();
        };
        panel
            .contents
            .iter()
            .filter_map(|s| {
                let id = s.item_instance_id?;
                Some(StoragePickOption {
                    item_instance_id: id,
                    label: storage_stack_label(s),
                    quantity: s.quantity,
                    category: s.category.clone().unwrap_or_default(),
                })
            })
            .collect()
    }

    /// Source rows for market list: on-person, then each eligible vault (only if they hold stacks).
    pub fn market_list_source_options(&self) -> Vec<(MarketListSourceKind, String)> {
        let mut opts = Vec::new();
        if !self
            .market_list_item_options(&MarketListSourceKind::Person)
            .is_empty()
        {
            opts.push((MarketListSourceKind::Person, "On person".into()));
        }
        if let Some(panel) = &self.market_panel {
            for vault in &panel.list_vaults {
                let source = MarketListSourceKind::TownStorage {
                    building_id: vault.building_id.clone(),
                };
                if self.market_list_item_options(&source).is_empty() {
                    continue;
                }
                let label = if vault.building_label.is_empty() {
                    format!("Town storage ({})", vault.building_id)
                } else {
                    format!("Town storage — {}", vault.building_label)
                };
                opts.push((source, label));
            }
        }
        opts
    }

    /// Stacks eligible to list from the chosen market source (excludes non-listable templates).
    pub fn market_list_item_options(
        &self,
        source: &MarketListSourceKind,
    ) -> Vec<StoragePickOption> {
        let filter = self.market_filter.as_str();
        let cat_filter = self.market_category_filter;
        let mut opts: Vec<StoragePickOption> = match source {
            MarketListSourceKind::Person => {
                let equipped = self.hand_equipped_instance_ids();
                self.person_rows()
                    .into_iter()
                    .filter(|r| r.depth == 0)
                    .filter(|r| self.stack_is_market_listable(&r.stack))
                    .filter_map(|r| {
                        let id = r.stack.item_instance_id?;
                        if equipped.contains(&id) {
                            return None;
                        }
                        Some(StoragePickOption {
                            item_instance_id: id,
                            label: storage_stack_label(&r.stack),
                            quantity: r.stack.quantity,
                            category: r
                                .stack
                                .category
                                .clone()
                                .or_else(|| {
                                    self.inventory_item_category(&r.stack.template_id)
                                        .map(str::to_string)
                                })
                                .unwrap_or_default(),
                        })
                    })
                    .collect()
            }
            MarketListSourceKind::TownStorage { building_id } => {
                let Some(panel) = &self.market_panel else {
                    return Vec::new();
                };
                let Some(vault) = panel
                    .list_vaults
                    .iter()
                    .find(|v| &v.building_id == building_id)
                else {
                    return Vec::new();
                };
                vault
                    .contents
                    .iter()
                    .filter(|s| self.stack_is_market_listable(s))
                    .filter_map(|s| {
                        let id = s.item_instance_id?;
                        Some(StoragePickOption {
                            item_instance_id: id,
                            label: storage_stack_label(s),
                            quantity: s.quantity,
                            category: s
                                .category
                                .clone()
                                .or_else(|| {
                                    self.inventory_item_category(&s.template_id)
                                        .map(str::to_string)
                                })
                                .unwrap_or_default(),
                        })
                    })
                    .collect()
            }
        };
        opts.retain(|o| {
            if !list_label_matches(&o.label, filter) {
                return false;
            }
            if let Some(group) = cat_filter {
                inventory_category_group(&o.category).0 == group
            } else {
                true
            }
        });
        opts
    }

    fn stack_is_market_listable(&self, stack: &flatland_protocol::ItemStack) -> bool {
        if crate::currency::is_currency(&stack.template_id) {
            return false;
        }
        if let Some(flag) = stack.listable {
            return flag;
        }
        if let Some(hint) = self.inventory_hints.get(&stack.template_id) {
            return hint.listable;
        }
        let cat = stack
            .category
            .as_deref()
            .or_else(|| self.inventory_item_category(&stack.template_id))
            .unwrap_or("");
        category_default_listable(cat)
    }

    /// Category group labels present in the current browse book or list-pick source.
    pub fn market_available_category_groups(&self) -> Vec<&'static str> {
        let mut seen = std::collections::BTreeMap::<u8, &'static str>::new();
        match &self.market_ui_mode {
            MarketUiMode::ListPick { source, .. } => {
                let raw: Vec<_> = match source {
                    MarketListSourceKind::Person => self
                        .person_rows()
                        .into_iter()
                        .filter(|r| r.depth == 0)
                        .filter(|r| self.stack_is_market_listable(&r.stack))
                        .filter(|r| list_label_matches(&storage_stack_label(&r.stack), &self.market_filter))
                        .map(|r| {
                            r.stack
                                .category
                                .clone()
                                .or_else(|| {
                                    self.inventory_item_category(&r.stack.template_id)
                                        .map(str::to_string)
                                })
                                .unwrap_or_default()
                        })
                        .collect(),
                    MarketListSourceKind::TownStorage { building_id } => self
                        .market_panel
                        .as_ref()
                        .and_then(|p| {
                            p.list_vaults
                                .iter()
                                .find(|v| &v.building_id == building_id)
                        })
                        .map(|vault| {
                            vault
                                .contents
                                .iter()
                                .filter(|s| self.stack_is_market_listable(s))
                                .filter(|s| {
                                    list_label_matches(&storage_stack_label(s), &self.market_filter)
                                })
                                .map(|s| {
                                    s.category
                                        .clone()
                                        .or_else(|| {
                                            self.inventory_item_category(&s.template_id)
                                                .map(str::to_string)
                                        })
                                        .unwrap_or_default()
                                })
                                .collect::<Vec<_>>()
                        })
                        .unwrap_or_default(),
                };
                for category in raw {
                    let (label, ord) = inventory_category_group(&category);
                    seen.insert(ord, label);
                }
            }
            _ => {
                if let Some(panel) = &self.market_panel {
                    for listing in &panel.listings {
                        if !list_label_matches(&listing.display_name, &self.market_filter)
                            && !list_label_matches(&listing.seller_label, &self.market_filter)
                        {
                            continue;
                        }
                        let (label, ord) = inventory_category_group(&listing.category);
                        seen.insert(ord, label);
                    }
                }
            }
        }
        seen.into_values().collect()
    }

    /// Indices into `market_panel.listings` after category + text filter.
    pub fn market_filtered_listing_indices(&self) -> Vec<usize> {
        let Some(panel) = &self.market_panel else {
            return Vec::new();
        };
        let filter = self.market_filter.as_str();
        let cat_filter = self.market_category_filter;
        panel
            .listings
            .iter()
            .enumerate()
            .filter(|(_, listing)| {
                if !list_label_matches(&listing.display_name, filter)
                    && !list_label_matches(&listing.seller_label, filter)
                    && !list_label_matches(&listing.template_id, filter)
                {
                    return false;
                }
                if let Some(group) = cat_filter {
                    inventory_category_group(&listing.category).0 == group
                } else {
                    true
                }
            })
            .map(|(i, _)| i)
            .collect()
    }

    pub fn clear_harvest_state(&mut self) {
        self.harvest_in_progress = false;
        self.harvest_started_at = None;
    }

    fn harvest_state_stale(&self) -> bool {
        match self.harvest_started_at {
            Some(started) => started.elapsed() > HARVEST_CLIENT_TIMEOUT,
            None => self.harvest_in_progress,
        }
    }

    pub fn vitals(&self) -> Option<flatland_protocol::PlayerVitals> {
        self.player.as_ref().and_then(|p| p.vitals)
    }

    pub fn can_craft_blueprint(&self, blueprint: &BlueprintView) -> bool {
        let materials_ok = blueprint.inputs.iter().all(|input| {
            self.inventory.get(&input.template_id).copied().unwrap_or(0) >= input.quantity
        });
        let tools_ok = blueprint
            .required_tools
            .iter()
            .all(|tool| self.inventory.get(&tool.item).copied().unwrap_or(0) >= 1);
        let station_ok = match blueprint.station.as_deref() {
            None | Some("hand") => true,
            Some(tag) => self.player_at_station_tag(tag),
        };
        materials_ok && tools_ok && station_ok
    }

    pub fn max_craft_batches(&self, blueprint: &BlueprintView) -> u32 {
        if !self.can_craft_blueprint(blueprint) {
            return 0;
        }
        let mut limit = u32::MAX;
        for input in &blueprint.inputs {
            if input.quantity == 0 {
                continue;
            }
            let have = self.inventory.get(&input.template_id).copied().unwrap_or(0);
            limit = limit.min(have / input.quantity);
        }
        for tool in &blueprint.required_tools {
            if tool.consumed {
                let have = self.inventory.get(&tool.item).copied().unwrap_or(0);
                limit = limit.min(have);
            }
        }
        let stamina = self.vitals().map(|v| v.stamina).unwrap_or(0.0);
        if CRAFT_STAMINA_COST > 0.0 {
            limit = limit.min((stamina / CRAFT_STAMINA_COST).floor() as u32);
        }
        limit
    }

    pub fn clamp_craft_batch_quantity(&mut self) {
        let Some(bp) = self.blueprints.get(self.craft_menu_index) else {
            self.craft_batch_quantity = 1;
            return;
        };
        let max = self.max_craft_batches(bp).max(1);
        self.craft_batch_quantity = self.craft_batch_quantity.clamp(1, max);
    }

    pub fn craft_batch_adjust_quantity(&mut self, delta: i32) {
        let Some(bp) = self.blueprints.get(self.craft_menu_index).cloned() else {
            return;
        };
        let max = self.max_craft_batches(&bp).max(1);
        let next = (self.craft_batch_quantity as i32 + delta).clamp(1, max as i32);
        self.craft_batch_quantity = next as u32;
    }

    pub fn craft_batch_set_max(&mut self) {
        let Some(bp) = self.blueprints.get(self.craft_menu_index).cloned() else {
            return;
        };
        let max = self.max_craft_batches(&bp);
        self.craft_batch_quantity = if max == 0 { 1 } else { max };
    }

    pub fn craft_batch_set_min(&mut self) {
        self.craft_batch_quantity = 1;
    }

    pub fn apply_shop_catalog(&mut self, catalog: flatland_protocol::ShopCatalog) {
        let preserve_ui = self.show_shop_menu;
        let tab = self.shop_tab;
        let index = self.shop_menu_index;
        let qty = self.shop_quantity;

        self.show_shop_menu = true;
        self.bank_panel = None;
        self.show_craft_menu = false;
        self.show_inventory_menu = false;
        self.show_stats = false;
        if self.npc_verb_target.is_none() && !catalog.npc_id.is_empty() {
            self.npc_verb_target = Some(catalog.npc_id.clone());
        }
        self.shop_catalog = Some(catalog);

        if preserve_ui {
            self.shop_tab = tab;
            self.shop_menu_index = index;
            self.shop_quantity = qty;
        } else {
            self.shop_tab = ShopTab::Buy;
            self.shop_menu_index = 0;
            self.shop_quantity = 1;
            self.clear_shop_trade_log();
        }
        self.show_npc_verb_menu = false;
        self.clamp_shop_selection();
    }

    pub fn apply_bank_panel(&mut self, panel: flatland_protocol::BankPanel) {
        let same_teller = self
            .bank_panel
            .as_ref()
            .is_some_and(|p| p.npc_id == panel.npc_id);
        self.bank_panel = Some(panel);
        self.storage_panel = None;
        self.market_panel = None;
        self.shop_catalog = None;
        self.show_shop_menu = false;
        self.show_craft_menu = false;
        self.show_inventory_menu = false;
        self.show_stats = false;
        self.show_npc_verb_menu = false;
        self.show_npc_chat = false;
        self.npc_chat = None;
        if !same_teller {
            self.bank_menu_index = 0;
            self.bank_ui_mode = BankUiMode::Menu;
        }
        if let Some(panel) = &self.bank_panel {
            if self.npc_verb_target.is_none() {
                self.npc_verb_target = Some(panel.npc_id.clone());
            }
        }
    }

    pub fn apply_storage_panel(&mut self, panel: flatland_protocol::StoragePanel) {
        let same_manager = self
            .storage_panel
            .as_ref()
            .is_some_and(|p| p.npc_id == panel.npc_id);
        self.storage_panel = Some(panel);
        self.bank_panel = None;
        self.market_panel = None;
        self.bank_ui_mode = BankUiMode::Menu;
        self.shop_catalog = None;
        self.show_shop_menu = false;
        self.show_craft_menu = false;
        self.show_inventory_menu = false;
        self.show_stats = false;
        self.show_npc_verb_menu = false;
        self.show_npc_chat = false;
        self.npc_chat = None;
        if !same_manager {
            self.storage_menu_index = 0;
            self.storage_ui_mode = StorageUiMode::Menu;
        } else {
            self.clamp_storage_pick_index();
        }
        if let Some(panel) = &self.storage_panel {
            if self.npc_verb_target.is_none() {
                self.npc_verb_target = Some(panel.npc_id.clone());
            }
        }
    }

    pub fn apply_market_panel(&mut self, panel: flatland_protocol::MarketPanel) {
        self.market_panel = Some(panel);
        self.bank_panel = None;
        self.storage_panel = None;
        self.shop_catalog = None;
        self.show_shop_menu = false;
        self.show_craft_menu = false;
        self.show_inventory_menu = false;
        self.show_stats = false;
        self.show_npc_verb_menu = false;
        self.show_npc_chat = false;
        self.npc_chat = None;
        self.market_menu_index = 0;
        self.market_buy_confirm = None;
        self.market_ui_mode = MarketUiMode::Browse;
        self.market_filter.clear();
        self.market_filter_focused = false;
        self.market_category_filter = None;
        if let Some(panel) = &self.market_panel {
            if self.npc_verb_target.is_none() {
                self.npc_verb_target = Some(panel.npc_id.clone());
            }
        }
    }

    pub fn clear_market_panel(&mut self) {
        self.market_panel = None;
        self.market_menu_index = 0;
        self.market_buy_confirm = None;
        self.market_ui_mode = MarketUiMode::Browse;
        self.market_filter.clear();
        self.market_filter_focused = false;
        self.market_category_filter = None;
    }

    pub fn clear_bank_panel(&mut self) {
        self.bank_panel = None;
        self.bank_menu_index = 0;
        self.bank_ui_mode = BankUiMode::Menu;
    }

    pub fn clear_storage_panel(&mut self) {
        self.storage_panel = None;
        self.storage_menu_index = 0;
        self.storage_ui_mode = StorageUiMode::Menu;
    }

    fn clamp_storage_pick_index(&mut self) {
        match &self.storage_ui_mode {
            StorageUiMode::StorePick { index } => {
                let n = self.storage_store_options().len();
                let next = if n == 0 { 0 } else { (*index).min(n - 1) };
                self.storage_ui_mode = StorageUiMode::StorePick { index: next };
            }
            StorageUiMode::TakePick { index } => {
                let n = self.storage_vault_options().len();
                let next = if n == 0 { 0 } else { (*index).min(n - 1) };
                self.storage_ui_mode = StorageUiMode::TakePick { index: next };
            }
            StorageUiMode::ShipPick {
                dest_building_id,
                dest_label,
                index,
            } => {
                let n = self.storage_vault_options().len();
                let next = if n == 0 { 0 } else { (*index).min(n - 1) };
                self.storage_ui_mode = StorageUiMode::ShipPick {
                    dest_building_id: dest_building_id.clone(),
                    dest_label: dest_label.clone(),
                    index: next,
                };
            }
            StorageUiMode::Menu
            | StorageUiMode::StoreAmount { .. }
            | StorageUiMode::TakeAmount { .. }
            | StorageUiMode::ShipAmount { .. } => {}
        }
    }

    pub fn shop_list_len(&self) -> usize {
        let Some(catalog) = &self.shop_catalog else {
            return 0;
        };
        match self.shop_tab {
            ShopTab::Buy => catalog.sells.len(),
            ShopTab::Sell => catalog.buys.len(),
        }
    }

    pub fn shop_menu_move(&mut self, delta: i32) {
        let n = self.shop_list_len();
        if n == 0 {
            return;
        }
        let idx = self.shop_menu_index as i32;
        let next = (idx + delta).rem_euclid(n as i32);
        self.shop_menu_index = next as usize;
        self.clamp_shop_quantity();
    }

    pub fn shop_quantity_adjust(&mut self, delta: i32) {
        let max = self.shop_quantity_max();
        if max == 0 {
            self.shop_quantity = 0;
            return;
        }
        let next = (self.shop_quantity as i32 + delta).clamp(1, max as i32);
        self.shop_quantity = next as u32;
    }

    pub(crate) fn clamp_shop_selection(&mut self) {
        let n = self.shop_list_len();
        if n == 0 {
            self.shop_menu_index = 0;
        } else {
            self.shop_menu_index = self.shop_menu_index.min(n - 1);
        }
        self.clamp_shop_quantity();
    }

    fn shop_quantity_max(&self) -> u32 {
        let Some(catalog) = &self.shop_catalog else {
            return 1;
        };
        match self.shop_tab {
            ShopTab::Buy => {
                if let Some(offer) = catalog.sells.get(self.shop_menu_index) {
                    if offer.kind == flatland_protocol::ShopOfferKind::Blueprint {
                        return 1;
                    }
                }
                99
            }
            ShopTab::Sell => catalog
                .buys
                .get(self.shop_menu_index)
                .map(|l| l.quantity)
                .unwrap_or(0),
        }
    }

    pub fn shop_quantity_set_max(&mut self) {
        self.shop_quantity = self.shop_quantity_max();
    }

    pub fn shop_quantity_set_min(&mut self) {
        let max = self.shop_quantity_max();
        self.shop_quantity = if max == 0 { 0 } else { 1 };
    }

    fn clamp_shop_quantity(&mut self) {
        let max = self.shop_quantity_max();
        if max == 0 {
            self.shop_quantity = 0;
        } else {
            self.shop_quantity = self.shop_quantity.max(1).min(max);
        }
    }

    pub fn player_at_station_tag(&self, tag: &str) -> bool {
        let Some(id) = self.effective_inside_building() else {
            return false;
        };
        self.buildings
            .iter()
            .find(|b| b.id == id)
            .is_some_and(|b| b.tags.iter().any(|t| t == tag))
    }

    /// Short hint for UI when a recipe cannot be started.
    pub fn craft_missing_hint(&self, blueprint: &BlueprintView) -> Option<String> {
        if self.can_craft_blueprint(blueprint) {
            return None;
        }
        let mut missing = Vec::new();
        for input in &blueprint.inputs {
            let have = self.inventory.get(&input.template_id).copied().unwrap_or(0);
            if have < input.quantity {
                let name = self.blueprint_ingredient_label(input);
                missing.push(format!("{}×{} (have {have})", input.quantity, name));
            }
        }
        for tool in &blueprint.required_tools {
            let have = self.inventory.get(&tool.item).copied().unwrap_or(0);
            if have < 1 {
                missing.push(format!("tool: {}", self.blueprint_tool_label(tool)));
            }
        }
        if let Some(station) = blueprint.station.as_deref() {
            if station != "hand" && !self.player_at_station_tag(station) {
                missing.push(format!("station: {station} (enter building)"));
            }
        }
        if missing.is_empty() {
            None
        } else {
            Some(missing.join(", "))
        }
    }

    pub fn player_entity(&self) -> Option<&EntityState> {
        self.player
            .as_ref()
            .or_else(|| self.entities.iter().find(|e| e.id == self.entity_id))
    }

    /// Apply persisted HUD / workers UI prefs from `client.json`.
    pub fn apply_client_ui_prefs(&mut self) {
        let cfg = crate::client_config::ClientConfig::load();
        if let Some(hidden) = cfg.hud_log_hidden {
            self.hud_log_hidden = hidden;
        }
        if let Some(compact) = cfg.workers_menu_compact {
            self.workers_menu_compact = compact;
        }
    }

    pub fn player_position(&self) -> (f32, f32) {
        let (x, y, _) = self.player_position_with_z();
        (x, y)
    }

    pub fn player_position_with_z(&self) -> (f32, f32, f32) {
        if let Some(p) = self.player_entity() {
            (
                p.transform.position.x,
                p.transform.position.y,
                p.transform.position.z,
            )
        } else {
            (0.0, 0.0, 0.0)
        }
    }

    pub fn sorted_inventory(&self) -> Vec<(String, u32, String)> {
        let mut rows: Vec<(String, u32, String)> = self
            .inventory
            .iter()
            .filter(|(_, q)| **q > 0)
            .map(|(id, qty)| {
                let label = self
                    .inventory_hints
                    .get(id)
                    .map(|h| h.display_name.clone())
                    .unwrap_or_else(|| id.clone());
                (id.clone(), *qty, label)
            })
            .collect();
        rows.sort_by(|a, b| a.2.cmp(&b.2).then_with(|| a.0.cmp(&b.0)));
        rows
    }

    pub fn inventory_item_category(&self, template_id: &str) -> Option<&str> {
        self.inventory_hints
            .get(template_id)
            .map(|h| h.category.as_str())
            .filter(|c| !c.is_empty())
    }

    pub fn stack_is_item_grant(stack: &flatland_protocol::ItemStack) -> bool {
        stack
            .props
            .get("grants_item_status_effect")
            .map(|s| !s.is_empty())
            .unwrap_or(false)
    }

    pub fn grant_effect_id(stack: &flatland_protocol::ItemStack) -> Option<&str> {
        stack
            .props
            .get("grants_item_status_effect")
            .map(String::as_str)
            .filter(|s| !s.is_empty())
    }

    pub fn grant_mode(stack: &flatland_protocol::ItemStack) -> &str {
        stack
            .props
            .get("grants_item_status_mode")
            .map(String::as_str)
            .unwrap_or("on_hit")
    }

    /// Candidate gear for a grant consumable (inventory + worn).
    pub fn grant_target_options(
        &self,
        grant: &flatland_protocol::ItemStack,
    ) -> Vec<GrantTargetOption> {
        let mode = Self::grant_mode(grant);
        let grant_tags: Vec<&str> = grant
            .props
            .get("grants_item_status_tags")
            .map(|s| {
                s.split(',')
                    .map(str::trim)
                    .filter(|t| !t.is_empty())
                    .collect()
            })
            .unwrap_or_default();
        let grant_id = grant.item_instance_id;
        let mut out = Vec::new();
        let mut push = |stack: &flatland_protocol::ItemStack, where_label: &str| {
            let Some(iid) = stack.item_instance_id else {
                return;
            };
            if Some(iid) == grant_id {
                return;
            }
            if stack.props.get("enchantable").map(String::as_str) == Some("0") {
                return;
            }
            if !grant_target_matches_mode(stack, mode) {
                return;
            }
            if !grant_tags_match(stack, &grant_tags) {
                return;
            }
            let name = stack
                .display_name
                .clone()
                .unwrap_or_else(|| stack.template_id.clone());
            let bindings = if stack.status_bindings.is_empty() {
                String::new()
            } else {
                format!(
                    " · {}",
                    stack
                        .status_bindings
                        .iter()
                        .map(|b| b.effect_id.as_str())
                        .collect::<Vec<_>>()
                        .join(", ")
                )
            };
            out.push(GrantTargetOption {
                label: format!("{where_label}: {name}{bindings}"),
                target_instance_id: iid,
            });
        };
        fn walk(
            stacks: &[flatland_protocol::ItemStack],
            where_label: &str,
            push: &mut dyn FnMut(&flatland_protocol::ItemStack, &str),
        ) {
            for s in stacks {
                push(s, where_label);
                if !s.contents.is_empty() {
                    let nested = format!(
                        "{where_label}/{}",
                        s.display_name
                            .as_deref()
                            .unwrap_or(s.template_id.as_str())
                    );
                    walk(&s.contents, &nested, push);
                }
            }
        }
        walk(&self.inventory_stacks, "Bag", &mut push);
        for (slot, stack) in &self.worn {
            push(stack, body_slot_label(*slot));
            let nest = format!(
                "{}/{}",
                body_slot_label(*slot),
                stack
                    .display_name
                    .as_deref()
                    .unwrap_or(stack.template_id.as_str())
            );
            walk(&stack.contents, &nest, &mut push);
        }
        out
    }

    pub fn item_base_mass(&self, template_id: &str) -> f32 {
        self.inventory_hints
            .get(template_id)
            .and_then(|h| h.base_mass)
            .unwrap_or(0.5)
    }

    pub fn item_base_volume(&self, template_id: &str) -> f32 {
        self.inventory_hints
            .get(template_id)
            .and_then(|h| h.base_volume)
            .unwrap_or(1.0)
    }

    pub fn stack_mass(&self, stack: &flatland_protocol::ItemStack) -> f32 {
        let unit = stack
            .base_mass
            .unwrap_or_else(|| self.item_base_mass(&stack.template_id));
        unit * stack.quantity as f32
    }

    fn stack_tree_volume(stack: &flatland_protocol::ItemStack) -> f32 {
        let unit = stack.base_volume.unwrap_or(1.0);
        unit * stack.quantity as f32
            + stack
                .contents
                .iter()
                .map(Self::stack_tree_volume)
                .sum::<f32>()
    }

    fn contents_used_volume(contents: &[flatland_protocol::ItemStack]) -> f32 {
        contents.iter().map(Self::stack_tree_volume).sum()
    }

    fn template_capacity_volume(&self, template_id: &str) -> Option<f32> {
        self.inventory_hints
            .get(template_id)
            .and_then(|h| h.capacity_volume)
            .filter(|c| *c > 0.0)
    }

    fn stack_capacity_volume(&self, stack: &flatland_protocol::ItemStack) -> Option<f32> {
        stack
            .capacity_volume
            .filter(|c| *c > 0.0)
            .or_else(|| self.template_capacity_volume(&stack.template_id))
    }

    /// Volume used / capacity / free space label for storage containers in the inventory UI.
    pub fn container_volume_label(&self, row: &InventoryRow) -> String {
        let Some((used, cap)) = self.container_volume_stats(row) else {
            return String::new();
        };
        let free = (cap - used).max(0.0);
        format!("  vol {used:.0}/{cap:.0} ({free:.0} free)")
    }

    fn container_volume_stats(&self, row: &InventoryRow) -> Option<(f32, f32)> {
        if row.is_chest_shell {
            let flatland_protocol::InventoryLocation::Placed { container_id } = &row.from else {
                return None;
            };
            let chest = self
                .placed_containers
                .iter()
                .find(|c| c.id == *container_id)?;
            let cap = self
                .stack_capacity_volume(&row.stack)
                .or(chest.capacity_volume.filter(|c| *c > 0.0))?;
            let used = if chest.accessible {
                Self::contents_used_volume(&chest.contents)
            } else {
                0.0
            };
            return Some((used, cap));
        }

        let cap = self.stack_capacity_volume(&row.stack)?;
        let used = Self::contents_used_volume(&row.stack.contents);
        Some((used, cap))
    }

    pub fn row_is_renameable_container(&self, row: &InventoryRow) -> bool {
        if row.is_chest_shell {
            return true;
        }
        if row.is_equip_shell {
            return self.inventory_item_category(&row.stack.template_id) == Some("container");
        }
        self.inventory_item_category(&row.stack.template_id) == Some("container")
            || row.stack.capacity_volume.is_some_and(|c| c > 0.0)
    }

    fn container_stack_for(
        &self,
        location: &flatland_protocol::InventoryLocation,
        parent_instance_id: Option<uuid::Uuid>,
    ) -> Option<flatland_protocol::ItemStack> {
        match location {
            flatland_protocol::InventoryLocation::Root => {
                let pid = parent_instance_id?;
                self.find_stack_by_instance(&self.inventory_stacks, pid)
            }
            flatland_protocol::InventoryLocation::Worn { slot } => {
                let worn = self.worn.get(slot)?;
                if parent_instance_id.is_none_or(|id| worn.item_instance_id == Some(id)) {
                    Some(worn.clone())
                } else {
                    self.find_stack_by_instance(&worn.contents, parent_instance_id?)
                }
            }
            flatland_protocol::InventoryLocation::Placed { container_id } => {
                let chest = self
                    .placed_containers
                    .iter()
                    .find(|c| c.id == *container_id)?;
                if parent_instance_id.is_none_or(|id| chest.item_instance_id == Some(id)) {
                    Some(flatland_protocol::ItemStack {
                        template_id: chest.template_id.clone(),
                        quantity: 1,
                        item_instance_id: chest.item_instance_id,
                        props: Default::default(),
                        status_bindings: Vec::new(),
                        contents: chest.contents.clone(),
                        display_name: Some(chest.display_name.clone()),
                        category: Some("container".into()),
                        capacity_volume: self
                            .inventory_hints
                            .get(&chest.template_id)
                            .and_then(|h| h.capacity_volume),
                        worker_lodging_capacity: chest.worker_lodging_capacity,
                        ..Default::default()
                    })
                } else {
                    self.find_stack_by_instance(&chest.contents, parent_instance_id?)
                }
            }
            flatland_protocol::InventoryLocation::Keychain => None,
            flatland_protocol::InventoryLocation::WhisperPouch => None,
        }
    }

    fn find_stack_by_instance(
        &self,
        stacks: &[flatland_protocol::ItemStack],
        instance_id: uuid::Uuid,
    ) -> Option<flatland_protocol::ItemStack> {
        for stack in stacks {
            if stack.item_instance_id == Some(instance_id) {
                return Some(stack.clone());
            }
            if let Some(found) = self.find_stack_by_instance(&stack.contents, instance_id) {
                return Some(found);
            }
        }
        None
    }

    /// Client-side estimate of how many units can move to `to` (server clamps authoritatively).
    pub fn max_movable_to(
        &self,
        template_id: &str,
        stack_qty: u32,
        from: &flatland_protocol::InventoryLocation,
        to: &flatland_protocol::InventoryLocation,
        parent_instance_id: Option<uuid::Uuid>,
    ) -> u32 {
        let unit_vol = self.item_base_volume(template_id);
        let unit_mass = self.item_base_mass(template_id);
        let mut limit = stack_qty;

        if let Some(parent) = self.container_stack_for(to, parent_instance_id) {
            let cap = parent
                .capacity_volume
                .or_else(|| {
                    self.inventory_hints
                        .get(&parent.template_id)
                        .and_then(|h| h.capacity_volume)
                })
                .unwrap_or(0.0);
            if cap > 0.0 && unit_vol > 0.0 {
                let remaining = (cap - Self::contents_used_volume(&parent.contents)).max(0.0);
                limit = limit.min((remaining / unit_vol).floor().max(0.0) as u32);
            }
        }

        let to_person = matches!(
            to,
            flatland_protocol::InventoryLocation::Root
                | flatland_protocol::InventoryLocation::Worn { .. }
        );
        let from_placed = matches!(from, flatland_protocol::InventoryLocation::Placed { .. });
        if to_person && from_placed && unit_mass > 0.0 {
            let headroom = (self.carry_mass_max - self.carry_mass).max(0.0);
            if self.encumbrance == flatland_protocol::EncumbranceState::Over {
                limit = 0;
            } else {
                limit = limit.min((headroom / unit_mass).floor().max(0.0) as u32);
            }
        }

        limit.max(0).min(stack_qty)
    }

    pub fn move_picker_max_at_selection(&self) -> u32 {
        let Some(picker) = &self.move_picker else {
            return 1;
        };
        let Some(opt) = picker.options.get(self.move_picker_index) else {
            return picker.stack_quantity;
        };
        match &opt.kind {
            MoveOptionKind::Cancel
            | MoveOptionKind::Drop
            | MoveOptionKind::Use
            | MoveOptionKind::GrantApply
            | MoveOptionKind::SellPlotToCrown { .. }
            | MoveOptionKind::PickupPlaced { .. }
            | MoveOptionKind::RelocatePlaced { .. } => picker.stack_quantity,
            MoveOptionKind::Move {
                location,
                parent_instance_id,
            } => self.max_movable_to(
                &picker.template_id,
                picker.stack_quantity,
                &picker.from,
                location,
                *parent_instance_id,
            ),
        }
    }

    pub fn clamp_move_picker_quantity(&mut self) {
        let max = self.move_picker_max_at_selection();
        if let Some(picker) = &mut self.move_picker {
            if max == 0 {
                picker.quantity = 1;
            } else {
                picker.quantity = picker.quantity.clamp(1, max);
            }
        }
    }

    pub fn move_picker_adjust_quantity(&mut self, delta: i32) {
        let max = self.move_picker_max_at_selection().max(1);
        if let Some(picker) = &mut self.move_picker {
            let next = (picker.quantity as i32 + delta).clamp(1, max as i32);
            picker.quantity = next as u32;
        }
    }

    pub fn move_picker_set_quantity_max(&mut self) {
        let max = self.move_picker_max_at_selection();
        if let Some(picker) = &mut self.move_picker {
            picker.quantity = if max == 0 {
                1
            } else {
                max.min(picker.stack_quantity)
            };
        }
    }

    pub fn move_picker_set_quantity_min(&mut self) {
        if let Some(picker) = &mut self.move_picker {
            picker.quantity = 1;
        }
    }

    pub fn destroy_picker_adjust_quantity(&mut self, delta: i32) {
        if let Some(picker) = &mut self.destroy_picker {
            let max = picker.stack_quantity.max(1);
            let next = (picker.quantity as i32 + delta).clamp(1, max as i32);
            picker.quantity = next as u32;
        }
    }

    pub fn destroy_picker_set_quantity_max(&mut self) {
        if let Some(picker) = &mut self.destroy_picker {
            picker.quantity = picker.stack_quantity.max(1);
        }
    }

    pub fn destroy_picker_set_quantity_min(&mut self) {
        if let Some(picker) = &mut self.destroy_picker {
            picker.quantity = 1;
        }
    }

    pub fn ingredient_status(&self, template_id: &str, need: u32) -> (u32, bool) {
        let have = self.inventory.get(template_id).copied().unwrap_or(0);
        (have, have >= need)
    }

    /// Have/need using plot-build storage pool (town vault / nearby chest + inventory).
    pub fn plot_build_stock_status(&self, template_id: &str, need: u32) -> (u32, bool) {
        let have = self
            .plot_build_offer
            .as_ref()
            .and_then(|o| {
                o.available
                    .iter()
                    .find(|s| s.template_id == template_id)
                    .map(|s| s.quantity)
            })
            .unwrap_or_else(|| self.inventory.get(template_id).copied().unwrap_or(0));
        (have, have >= need)
    }

    pub fn plot_build_wall_options(&self) -> Vec<&flatland_protocol::BuildingMaterialView> {
        self.building_materials
            .iter()
            .filter(|m| m.can_wall)
            .collect()
    }

    pub fn plot_build_roof_options(&self) -> Vec<&flatland_protocol::BuildingMaterialView> {
        self.building_materials
            .iter()
            .filter(|m| m.can_roof)
            .collect()
    }

    pub fn plot_build_selected_wall(&self) -> Option<&flatland_protocol::BuildingMaterialView> {
        self.plot_build_wall_options()
            .get(self.plot_build_wall_index)
            .copied()
    }

    pub fn plot_build_selected_roof(&self) -> Option<&flatland_protocol::BuildingMaterialView> {
        self.plot_build_roof_options()
            .get(self.plot_build_roof_index)
            .copied()
    }

    /// BOM lines for the current wall/roof selection and tilled pad area.
    pub fn plot_build_bom_lines(&self) -> Vec<(String, String, u32)> {
        let Some(wall) = self.plot_build_selected_wall() else {
            return Vec::new();
        };
        let Some(roof) = self.plot_build_selected_roof() else {
            return Vec::new();
        };
        let area = self
            .plot_build_offer
            .as_ref()
            .filter(|o| o.pad_ok)
            .map(|o| o.pad_width_m * o.pad_depth_m)
            .unwrap_or(0.0);
        if area <= 0.0 {
            return Vec::new();
        }
        let mut map: std::collections::HashMap<String, (String, u32)> =
            std::collections::HashMap::new();
        for line in &wall.wall_bom {
            let qty = (area * line.per_m2).ceil().max(0.0) as u32;
            if qty == 0 {
                continue;
            }
            let name = if line.display_name.is_empty() {
                line.template_id.clone()
            } else {
                line.display_name.clone()
            };
            let entry = map.entry(line.template_id.clone()).or_insert((name, 0));
            entry.1 = entry.1.saturating_add(qty);
        }
        for line in &roof.roof_bom {
            let qty = (area * line.per_m2).ceil().max(0.0) as u32;
            if qty == 0 {
                continue;
            }
            let name = if line.display_name.is_empty() {
                line.template_id.clone()
            } else {
                line.display_name.clone()
            };
            let entry = map.entry(line.template_id.clone()).or_insert((name, 0));
            entry.1 = entry.1.saturating_add(qty);
        }
        let mut out: Vec<_> = map
            .into_iter()
            .map(|(id, (name, qty))| (id, name, qty))
            .collect();
        out.sort_by(|a, b| a.0.cmp(&b.0));
        out
    }

    pub fn plot_build_duration_secs(&self) -> Option<f32> {
        let wall = self.plot_build_selected_wall()?;
        let roof = self.plot_build_selected_roof()?;
        let offer = self.plot_build_offer.as_ref()?;
        if !offer.pad_ok {
            return None;
        }
        let area = offer.pad_width_m * offer.pad_depth_m;
        let mult = wall.tick_mult.max(roof.tick_mult).max(0.1);
        let ticks = (offer.base_ticks as f32 + area * offer.tick_per_m2 as f32 * mult).ceil();
        Some(ticks.max(2.0) / 30.0)
    }

    pub fn plot_build_can_afford(&self) -> bool {
        if self
            .plot_build_offer
            .as_ref()
            .is_none_or(|o| !o.pad_ok)
        {
            return false;
        }
        self.plot_build_bom_lines()
            .iter()
            .all(|(id, _, need)| self.plot_build_stock_status(id, *need).1)
    }

    pub fn currency_display(&self) -> String {
        crate::currency::currency_line(&self.inventory)
    }

    /// True when standing in a shallow-water terrain zone from the segment snapshot.
    pub fn in_shallow_water(&self) -> bool {
        let (px, py) = self.player_position();
        self.terrain_at(px, py)
            .is_some_and(|k| k == TerrainKindView::ShallowWater)
    }

    pub fn terrain_at(&self, x: f32, y: f32) -> Option<TerrainKindView> {
        self.terrain_zone_at(x, y).map(|z| z.kind)
    }

    /// First terrain zone containing `(x, y)` — highest `z_order` wins.
    pub fn terrain_zone_at(&self, x: f32, y: f32) -> Option<&TerrainZoneView> {
        use std::cell::RefCell;

        const CHUNK: i32 = 8;
        thread_local! {
            static INDEX: RefCell<Option<(*const TerrainZoneView, usize, std::collections::HashMap<(i32, i32), Vec<usize>>)>> =
                RefCell::new(None);
        }

        let zones = &self.terrain_zones;
        if zones.is_empty() {
            return None;
        }
        if zones.len() <= 48 {
            return zones
                .iter()
                .enumerate()
                .filter(|(_, z)| x >= z.x0 && x <= z.x1 && y >= z.y0 && y <= z.y1)
                .max_by(|(ia, a), (ib, b)| a.z_order.cmp(&b.z_order).then(ia.cmp(ib)))
                .map(|(_, z)| z);
        }

        let ptr = zones.as_ptr();
        let len = zones.len();
        INDEX.with(|cell| {
            let mut slot = cell.borrow_mut();
            let stale = match slot.as_ref() {
                Some((p, l, _)) => *p != ptr || *l != len,
                None => true,
            };
            if stale {
                let mut chunks: std::collections::HashMap<(i32, i32), Vec<usize>> =
                    std::collections::HashMap::new();
                for (zi, z) in zones.iter().enumerate() {
                    let x0 = z.x0.min(z.x1).floor() as i32;
                    let y0 = z.y0.min(z.y1).floor() as i32;
                    let x1 = (z.x0.max(z.x1).ceil() as i32 - 1).max(x0);
                    let y1 = (z.y0.max(z.y1).ceil() as i32 - 1).max(y0);
                    let cx0 = x0.div_euclid(CHUNK);
                    let cy0 = y0.div_euclid(CHUNK);
                    let cx1 = x1.div_euclid(CHUNK);
                    let cy1 = y1.div_euclid(CHUNK);
                    for cy in cy0..=cy1 {
                        for cx in cx0..=cx1 {
                            chunks.entry((cx, cy)).or_default().push(zi);
                        }
                    }
                }
                *slot = Some((ptr, len, chunks));
            }
            let chunks = &slot.as_ref().expect("index").2;
            let cx = (x.floor() as i32).div_euclid(CHUNK);
            let cy = (y.floor() as i32).div_euclid(CHUNK);
            let mut best: Option<(usize, &TerrainZoneView)> = None;
            if let Some(list) = chunks.get(&(cx, cy)) {
                for &zi in list {
                    let Some(z) = zones.get(zi) else { continue };
                    if !(x >= z.x0 && x <= z.x1 && y >= z.y0 && y <= z.y1) {
                        continue;
                    }
                    best = match best {
                        None => Some((zi, z)),
                        Some((bi, bz)) => {
                            if z.z_order > bz.z_order || (z.z_order == bz.z_order && zi > bi) {
                                Some((zi, z))
                            } else {
                                Some((bi, bz))
                            }
                        }
                    };
                }
            }
            best.map(|(_, z)| z)
        })
    }

    /// Ground elevation from terrain zones (m).
    pub fn elevation_at(&self, x: f32, y: f32) -> f32 {
        self.terrain_zone_at(x, y)
            .map(|z| z.elevation)
            .unwrap_or(0.0)
    }

    /// Walkable z levels at a map column (terrain + platforms).
    pub fn walkable_levels_at(&self, x: f32, y: f32) -> Vec<f32> {
        const TOL: f32 = 0.35;
        let mut levels = vec![self.elevation_at(x, y)];
        for p in &self.z_platforms {
            if x >= p.x0 && x <= p.x1 && y >= p.y0 && y <= p.y1 {
                levels.push(p.z);
            }
        }
        levels.sort_by(|a, b| a.partial_cmp(b).unwrap_or(std::cmp::Ordering::Equal));
        levels.dedup_by(|a, b| (*a - *b).abs() < TOL);
        levels
    }

    pub fn is_walkable_at_z(&self, x: f32, y: f32, z: f32) -> bool {
        const TOL: f32 = 0.35;
        self.walkable_levels_at(x, y)
            .iter()
            .any(|&l| (l - z).abs() <= TOL)
    }

    pub fn surface_elevation_at(&self, x: f32, y: f32) -> f32 {
        let mut top = self.elevation_at(x, y);
        for p in &self.z_platforms {
            if x >= p.x0 && x <= p.x1 && y >= p.y0 && y <= p.y1 {
                top = top.max(p.z);
            }
        }
        top
    }

    /// Authoritative interior context from the server (`inside_building` flag).
    pub fn effective_inside_building(&self) -> Option<String> {
        self.player_entity().and_then(|p| p.inside_building.clone())
    }

    pub fn sync_inventory_from_stacks(&mut self, stacks: &[flatland_protocol::ItemStack]) {
        self.inventory_stacks = stacks.to_vec();
        self.inventory.clear();
        self.inventory_hints.clear();
        fn walk(
            stacks: &[flatland_protocol::ItemStack],
            inventory: &mut std::collections::HashMap<String, u32>,
            hints: &mut std::collections::HashMap<String, InventoryHint>,
        ) {
            for stack in stacks {
                *inventory.entry(stack.template_id.clone()).or_insert(0) += stack.quantity;
                if stack.display_name.is_some()
                    || stack.category.is_some()
                    || stack.base_mass.is_some()
                    || stack.base_volume.is_some()
                {
                    hints.insert(
                        stack.template_id.clone(),
                        InventoryHint {
                            display_name: stack
                                .display_name
                                .clone()
                                .unwrap_or_else(|| stack.template_id.clone()),
                            category: stack.category.clone().unwrap_or_default(),
                            base_mass: stack.base_mass,
                            base_volume: stack.base_volume,
                            capacity_volume: stack.capacity_volume,
                            stackable: stack.stackable.unwrap_or(true),
                            listable: stack.listable.unwrap_or_else(|| {
                                category_default_listable(
                                    stack.category.as_deref().unwrap_or(""),
                                )
                            }),
                        },
                    );
                }
                walk(&stack.contents, inventory, hints);
            }
        }
        walk(stacks, &mut self.inventory, &mut self.inventory_hints);
        // Include worn items (and nested contents, e.g. belt-clipped pouches) in craft counts.
        for item in self.worn.values() {
            walk(
                std::slice::from_ref(item),
                &mut self.inventory,
                &mut self.inventory_hints,
            );
        }
    }

    /// Apply server interaction deltas immediately (quest rewards, shop, etc.) so the
    /// inventory UI updates before the next tick snapshot arrives.
    pub fn apply_interaction_notice(&mut self, notice: &flatland_protocol::InteractionNotice) {
        let subtract_items =
            notice.message.starts_with("Sold ") || notice.message.starts_with("Consumed ");
        for stack in &notice.inventory_delta {
            if stack.quantity == 0 {
                continue;
            }
            if subtract_items {
                crate::currency::drain_template_stacks(
                    &mut self.inventory_stacks,
                    &stack.template_id,
                    stack.quantity,
                );
                continue;
            }
            let stackable = self
                .inventory_hints
                .get(&stack.template_id)
                .map(|h| h.stackable)
                .or(stack.stackable)
                .unwrap_or(true);
            if stackable {
                if let Some(existing) = self
                    .inventory_stacks
                    .iter_mut()
                    .find(|s| s.template_id == stack.template_id)
                {
                    existing.quantity = existing.quantity.saturating_add(stack.quantity);
                    if stack.display_name.is_some() {
                        existing.display_name = stack.display_name.clone();
                    }
                    if stack.category.is_some() {
                        existing.category = stack.category.clone();
                    }
                    continue;
                }
            }
            self.inventory_stacks.push(stack.clone());
        }
        if notice.coins_delta != 0 {
            crate::currency::apply_coins_delta(&mut self.inventory_stacks, notice.coins_delta);
        }
        if !notice.inventory_delta.is_empty() || notice.coins_delta != 0 {
            let stacks = self.inventory_stacks.clone();
            self.sync_inventory_from_stacks(&stacks);
        }
        self.record_shop_trade_notice(notice);
    }

    /// Worn body-slot items — each shown as a shell row (unequip via Enter) followed by
    /// its nested contents (e.g. pouches clipped onto a worn belt). `BodySlot` derives
    /// `Ord` in display order (Head/Body/Arms/Legs/Feet/Back/Waist), so `BTreeMap`
    /// iteration alone gives a stable row order.
    pub fn worn_rows(&self) -> Vec<InventoryRow> {
        let mut rows = Vec::new();
        for (slot, item) in &self.worn {
            let from = flatland_protocol::InventoryLocation::Worn { slot: *slot };
            rows.push(InventoryRow {
                depth: 0,
                stack: item.clone(),
                from: from.clone(),
                from_parent_instance_id: None,
                is_equip_shell: true,
                is_chest_shell: false,
                section: InventorySection::Worn,
            });
            for child in &item.contents {
                push_inventory_rows(
                    &mut rows,
                    1,
                    child,
                    &from,
                    item.item_instance_id,
                    InventorySection::Worn,
                );
            }
        }
        rows
    }

    /// Root stacks eligible to present in a player trade (excludes hand-equipped gear).
    pub fn trade_presentable_stacks(&self) -> Vec<&flatland_protocol::ItemStack> {
        let equipped = self.hand_equipped_instance_ids();
        self.inventory_stacks
            .iter()
            .filter(|s| {
                s.item_instance_id
                    .is_some_and(|id| !equipped.contains(&id))
            })
            .collect()
    }

    /// Root on-person stacks that can be handed to a hired worker.
    pub fn giveable_inventory_options(&self) -> Vec<WorkerGiveOption> {
        let equipped = self.hand_equipped_instance_ids();
        self.inventory_stacks
            .iter()
            .filter_map(|stack| {
                let item_instance_id = stack.item_instance_id?;
                if equipped.contains(&item_instance_id) {
                    return None;
                }
                let label = stack
                    .display_name
                    .clone()
                    .unwrap_or_else(|| stack.template_id.clone());
                let label = if stack.quantity > 1 {
                    format!("{label} ×{}", stack.quantity)
                } else {
                    label
                };
                Some(WorkerGiveOption {
                    item_instance_id,
                    label,
                    quantity: stack.quantity,
                    template_id: stack.template_id.clone(),
                })
            })
            .collect()
    }

    /// Employer-known blueprints the selected worker does not yet know.
    pub fn teachable_blueprint_options(
        &self,
        worker: &flatland_protocol::HiredWorkerView,
    ) -> Vec<WorkerTeachOption> {
        let copper = crate::currency::copper_from_counts(&self.inventory);
        let mut options: Vec<WorkerTeachOption> = self
            .blueprints
            .iter()
            .filter(|bp| !worker.known_blueprint_ids.iter().any(|k| k == &bp.id))
            .map(|bp| {
                let min_level = bp.skill.as_ref().map(|s| s.level).unwrap_or(1);
                let cost = bp.worker_train_copper;
                WorkerTeachOption {
                    blueprint_id: bp.id.clone(),
                    label: if bp.label.is_empty() {
                        bp.id.clone()
                    } else {
                        bp.label.clone()
                    },
                    cost_copper: cost,
                    min_level,
                    worker_level: worker.level,
                    can_afford: copper >= cost,
                    level_ok: worker.level >= min_level,
                }
            })
            .collect();
        options.sort_by(|a, b| a.label.cmp(&b.label));
        options
    }

    /// Loose on-person inventory (not worn, not inside a placed chest).
    /// Root stacks are ordered by category group; nested contents stay under their parent.
    pub fn person_rows(&self) -> Vec<InventoryRow> {
        self.person_rows_filtered("")
    }

    pub fn person_rows_filtered(&self, filter: &str) -> Vec<InventoryRow> {
        let mut roots: Vec<&flatland_protocol::ItemStack> = self.inventory_stacks.iter().collect();
        roots.sort_by(|a, b| {
            let ca = a
                .category
                .as_deref()
                .or_else(|| self.inventory_item_category(&a.template_id))
                .unwrap_or("");
            let cb = b
                .category
                .as_deref()
                .or_else(|| self.inventory_item_category(&b.template_id))
                .unwrap_or("");
            let ga = inventory_category_group(ca).1;
            let gb = inventory_category_group(cb).1;
            ga.cmp(&gb).then_with(|| {
                let na = a
                    .display_name
                    .as_deref()
                    .unwrap_or(a.template_id.as_str());
                let nb = b
                    .display_name
                    .as_deref()
                    .unwrap_or(b.template_id.as_str());
                na.cmp(nb)
            })
        });
        let mut rows = Vec::new();
        for stack in roots {
            push_inventory_rows_filtered(
                &mut rows,
                0,
                stack,
                &flatland_protocol::InventoryLocation::Root,
                None,
                InventorySection::Person,
                filter,
            );
        }
        rows
    }

    pub fn worn_rows_filtered(&self, filter: &str) -> Vec<InventoryRow> {
        if filter.is_empty() {
            return self.worn_rows();
        }
        let mut rows = Vec::new();
        for (slot, item) in &self.worn {
            if !stack_matches_filter(item, filter) {
                continue;
            }
            let from = flatland_protocol::InventoryLocation::Worn { slot: *slot };
            let self_hit = {
                let f = filter.to_ascii_lowercase();
                let name = item
                    .display_name
                    .as_deref()
                    .unwrap_or("")
                    .to_ascii_lowercase();
                let tid = item.template_id.to_ascii_lowercase();
                name.contains(&f) || tid.contains(&f)
            };
            rows.push(InventoryRow {
                depth: 0,
                stack: item.clone(),
                from: from.clone(),
                from_parent_instance_id: None,
                is_equip_shell: true,
                is_chest_shell: false,
                section: InventorySection::Worn,
            });
            for child in &item.contents {
                if self_hit || stack_matches_filter(child, filter) {
                    push_inventory_rows_filtered(
                        &mut rows,
                        1,
                        child,
                        &from,
                        item.item_instance_id,
                        InventorySection::Worn,
                        if self_hit { "" } else { filter },
                    );
                }
            }
        }
        rows
    }

    /// Legacy alias used by the HUD sidebar summary (worn + on-person, unchanged).
    pub fn inventory_tree_rows(&self) -> Vec<(usize, flatland_protocol::ItemStack)> {
        let mut rows = self.worn_rows();
        rows.extend(self.person_rows());
        rows.into_iter().map(|r| (r.depth, r.stack)).collect()
    }

    /// Placed chests within `CONTAINER_RANGE_M`, nearest first. Contents are only
    /// populated when `accessible` — this is what makes a chest's contents
    /// disappear the moment you walk away or it's locked without your key.
    pub fn nearby_containers(&self) -> Vec<NearbyContainer> {
        let (px, py) = self.player_position();
        let mut list: Vec<NearbyContainer> = self
            .placed_containers
            .iter()
            .filter_map(|c| {
                let distance_m = (c.x - px).hypot(c.y - py);
                if distance_m > CONTAINER_RANGE_M {
                    return None;
                }
                let mut rows = Vec::new();
                let from = flatland_protocol::InventoryLocation::Placed {
                    container_id: c.id.clone(),
                };
                rows.push(InventoryRow {
                    depth: 0,
                    stack: flatland_protocol::ItemStack {
                        template_id: c.template_id.clone(),
                        quantity: 1,
                        item_instance_id: c.item_instance_id,
                        props: Default::default(),
                        status_bindings: Vec::new(),
                        contents: Vec::new(),
                        display_name: Some(c.display_name.clone()),
                        category: Some("container".into()),
                        capacity_volume: c.capacity_volume,
                        worker_lodging_capacity: c.worker_lodging_capacity,
                        ..Default::default()
                    },
                    from: from.clone(),
                    from_parent_instance_id: None,
                    is_equip_shell: false,
                    is_chest_shell: true,
                    section: InventorySection::Nearby,
                });
                if c.accessible {
                    for child in &c.contents {
                        push_inventory_rows(
                            &mut rows,
                            1,
                            child,
                            &from,
                            c.item_instance_id,
                            InventorySection::Nearby,
                        );
                    }
                }
                Some(NearbyContainer {
                    view: c.clone(),
                    distance_m,
                    rows,
                })
            })
            .collect();
        list.sort_by(|a, b| {
            a.distance_m
                .partial_cmp(&b.distance_m)
                .unwrap_or(std::cmp::Ordering::Equal)
        });
        list
    }

    /// Nearest placed chest within `max_dist`, regardless of accessibility.
    pub fn nearest_placed_container(
        &self,
        max_dist: f32,
    ) -> Option<flatland_protocol::PlacedContainerView> {
        let (px, py) = self.player_position();
        self.placed_containers
            .iter()
            .filter(|c| (c.x - px).hypot(c.y - py) <= max_dist)
            .min_by(|a, b| {
                let da = (a.x - px).hypot(a.y - py);
                let db = (b.x - px).hypot(b.y - py);
                da.partial_cmp(&db).unwrap_or(std::cmp::Ordering::Equal)
            })
            .cloned()
    }

    /// Selectable rows for the **active inventory tab** (and current filter).
    /// Index into this with `inventory_menu_index`; browser lines must use the same order.
    pub fn inventory_selectable_rows(&self) -> Vec<InventoryRow> {
        let filter = self.inventory_filter.as_str();
        match self.inventory_tab {
            InventoryTab::OnPerson => {
                let mut rows = self.worn_rows_filtered(filter);
                rows.extend(self.person_rows_filtered(filter));
                rows
            }
            InventoryTab::Nearby => {
                let mut rows = Vec::new();
                for nc in self.nearby_containers() {
                    if filter.is_empty() {
                        rows.extend(nc.rows);
                        continue;
                    }
                    let shell = nc.rows.first().cloned();
                    let contents: Vec<_> = nc
                        .rows
                        .iter()
                        .skip(1)
                        .filter(|r| stack_matches_filter(&r.stack, filter))
                        .cloned()
                        .collect();
                    let shell_hit = shell
                        .as_ref()
                        .map(|s| stack_matches_filter(&s.stack, filter))
                        .unwrap_or(false);
                    if shell_hit || !contents.is_empty() {
                        if let Some(s) = shell {
                            rows.push(s);
                        }
                        if shell_hit {
                            rows.extend(nc.rows.into_iter().skip(1));
                        } else {
                            rows.extend(contents);
                        }
                    }
                }
                rows
            }
        }
    }

    pub fn inventory_selected_row(&self) -> Option<InventoryRow> {
        self.inventory_selectable_rows()
            .into_iter()
            .nth(self.inventory_menu_index)
    }

    fn inventory_row_base_label(&self, row: &InventoryRow) -> String {
        let cat = self
            .inventory_item_category(&row.stack.template_id)
            .unwrap_or("");
        if cat == "key" {
            self.key_inventory_label(&row.stack)
        } else {
            row.stack
                .display_name
                .clone()
                .unwrap_or_else(|| row.stack.template_id.clone())
        }
    }

    /// Signature of everything already shown on the gfx row title (bindings, grants, qty, worn slot).
    fn inventory_row_visible_mod_signature(&self, row: &InventoryRow) -> String {
        let bindings = format_status_bindings_suffix(
            &row.stack.status_bindings,
            self.tick,
            DEFAULT_TICK_HZ,
        );
        let grant_hint = if Self::stack_is_item_grant(&row.stack) {
            let effect = Self::grant_effect_id(&row.stack).unwrap_or("?");
            let mode = Self::grant_mode(&row.stack);
            format!(" [grant {effect} · {mode} — e apply]")
        } else {
            String::new()
        };
        let qty = if row.stack.quantity > 1 {
            format!(" ×{}", row.stack.quantity)
        } else {
            String::new()
        };
        let worn_slot = if row.is_equip_shell {
            match row.from {
                flatland_protocol::InventoryLocation::Worn { slot } => {
                    format!(" ({})", body_slot_label(slot))
                }
                _ => String::new(),
            }
        } else {
            String::new()
        };
        format!("{grant_hint}{bindings}{qty}{worn_slot}")
    }

    fn inventory_row_instance_identity_key(&self, row: &InventoryRow) -> (String, String, String) {
        (
            row.stack.template_id.clone(),
            self.inventory_row_base_label(row),
            self.inventory_row_visible_mod_signature(row),
        )
    }

    /// Keys for which two or more instanced rows look the same in the browser (need hover disambiguation).
    fn inventory_ambiguous_instance_identity_keys(&self) -> HashSet<(String, String, String)> {
        let mut counts: HashMap<(String, String, String), usize> = HashMap::new();
        for row in self.inventory_selectable_rows() {
            if row.stack.item_instance_id.is_none() {
                continue;
            }
            let key = self.inventory_row_instance_identity_key(&row);
            *counts.entry(key).or_default() += 1;
        }
        counts
            .into_iter()
            .filter(|(_, n)| *n > 1)
            .map(|(k, _)| k)
            .collect()
    }

    fn format_instance_hover_tooltip(id: uuid::Uuid) -> String {
        let hex: String = id
            .as_simple()
            .to_string()
            .chars()
            .filter(|c| c.is_ascii_hexdigit())
            .collect();
        let short = if hex.len() >= 4 {
            &hex[hex.len() - 4..]
        } else {
            hex.as_str()
        };
        format!("Instance {id} (#{short})")
    }

    /// Format one selectable inventory row for TUI/gfx (label + hints + mass/volume).
    pub fn format_inventory_row(&self, row: &InventoryRow) -> InventoryRowView {
        let cat = self
            .inventory_item_category(&row.stack.template_id)
            .unwrap_or("");
        let label = self.inventory_row_base_label(row);
        let hint: String = if row.is_equip_shell {
            " [worn — Enter to unequip]".into()
        } else if row.is_chest_shell {
            let (locked, lodging_note) = match &row.from {
                flatland_protocol::InventoryLocation::Placed { container_id } => {
                    let locked = self
                        .placed_containers
                        .iter()
                        .find(|c| c.id == *container_id)
                        .map(|c| c.locked)
                        .unwrap_or(false);
                    let lodging_note = self
                        .lodging_occupancy_label(container_id)
                        .map(|who| format!(" [lodging: {who}]"))
                        .unwrap_or_default();
                    (locked, lodging_note)
                }
                _ => (false, String::new()),
            };
            if locked {
                format!(" [locked — Enter pick up · l unlock]{lodging_note}")
            } else {
                format!(" [Enter pick up · l lock]{lodging_note}")
            }
        } else if cat == "key" {
            self.key_inventory_hint(&row.stack)
        } else {
            match cat {
                "weapon" => " [weapon]".into(),
                "container" => " [bag/chest/belt]".into(),
                "lodging" => " [worker lodging]".into(),
                "armor" => " [armor]".into(),
                _ => String::new(),
            }
        };
        let qty = if row.stack.quantity > 1 {
            format!(" ×{}", row.stack.quantity)
        } else {
            String::new()
        };
        let bindings = format_status_bindings_suffix(
            &row.stack.status_bindings,
            self.tick,
            DEFAULT_TICK_HZ,
        );
        let grant_hint = if Self::stack_is_item_grant(&row.stack) {
            let effect = Self::grant_effect_id(&row.stack).unwrap_or("?");
            let mode = Self::grant_mode(&row.stack);
            format!(" [grant {effect} · {mode} — e apply]")
        } else {
            String::new()
        };
        let mass = self.stack_mass(&row.stack);
        let mass_kg = (mass >= 0.05).then_some(mass);
        let mass_str = mass_kg
            .map(|m| format!("  {m:.1} kg"))
            .unwrap_or_default();
        let volume = self.container_volume_stats(row);
        let vol_str = self.container_volume_label(row);

        let mut title = label.clone();
        title.push_str(&qty);
        if row.is_equip_shell {
            if let flatland_protocol::InventoryLocation::Worn { slot } = row.from {
                title.push_str(&format!(" ({})", body_slot_label(slot)));
            }
        }

        InventoryRowView {
            depth: row.depth,
            text: format!("{label}{hint}{grant_hint}{bindings}{qty}{mass_str}{vol_str}"),
            title: format!("{title}{grant_hint}{bindings}"),
            mass_kg,
            volume,
            instance_tooltip: None,
        }
    }

    fn push_browser_item(
        &self,
        lines: &mut Vec<InventoryBrowserLine>,
        row: &InventoryRow,
        global_idx: &mut usize,
        target: usize,
        highlight: bool,
        ambiguous_instance_keys: &HashSet<(String, String, String)>,
    ) {
        let mut view = self.format_inventory_row(row);
        if let Some(id) = row.stack.item_instance_id {
            let key = self.inventory_row_instance_identity_key(row);
            if ambiguous_instance_keys.contains(&key) {
                view.instance_tooltip = Some(Self::format_instance_hover_tooltip(id));
            }
        }
        lines.push(InventoryBrowserLine::Item {
            selectable_index: *global_idx,
            selected: highlight && *global_idx == target,
            depth: view.depth,
            text: view.text,
            title: view.title,
            mass_kg: view.mass_kg,
            volume: view.volume,
            instance_tooltip: view.instance_tooltip,
        });
        *global_idx += 1;
    }

    /// Sectioned inventory browser lines for the active tab. Selectable rows carry
    /// `selectable_index` matching `inventory_menu_index`.
    pub fn inventory_browser_lines(&self) -> Vec<InventoryBrowserLine> {
        let mut lines = Vec::new();
        let target = self.inventory_menu_index;
        let highlight = !self.show_move_picker && !self.show_grant_picker;
        let filter = self.inventory_filter.as_str();
        let mut global_idx = 0usize;
        let ambiguous_instance_keys = self.inventory_ambiguous_instance_identity_keys();

        match self.inventory_tab {
            InventoryTab::OnPerson => {
                lines.push(InventoryBrowserLine::Section("— Worn —".into()));
                let worn = self.worn_rows_filtered(filter);
                if worn.is_empty() {
                    lines.push(InventoryBrowserLine::Hint(
                        "  (nothing equipped — wear a backpack/belt from \"On you\" below)".into(),
                    ));
                } else {
                    for row in &worn {
                        if row.is_equip_shell {
                            if let flatland_protocol::InventoryLocation::Worn { slot } = row.from {
                                lines.push(InventoryBrowserLine::SlotLabel(format!(
                                    "  {}:",
                                    body_slot_label(slot)
                                )));
                            }
                        }
                        self.push_browser_item(
                            &mut lines,
                            row,
                            &mut global_idx,
                            target,
                            highlight,
                            &ambiguous_instance_keys,
                        );
                    }
                }

                lines.push(InventoryBrowserLine::Blank);
                lines.push(InventoryBrowserLine::Section(
                    "— On you (loose, not worn) —".into(),
                ));
                let person = self.person_rows_filtered(filter);
                if person.is_empty() {
                    lines.push(InventoryBrowserLine::Hint("  (empty)".into()));
                } else {
                    let mut last_group: Option<&'static str> = None;
                    for row in &person {
                        if row.depth == 0 {
                            let cat = row
                                .stack
                                .category
                                .as_deref()
                                .or_else(|| self.inventory_item_category(&row.stack.template_id))
                                .unwrap_or("");
                            let (group, _) = inventory_category_group(cat);
                            if last_group != Some(group) {
                                lines.push(InventoryBrowserLine::SlotLabel(format!(
                                    "  {group}"
                                )));
                                last_group = Some(group);
                            }
                        }
                        self.push_browser_item(
                            &mut lines,
                            row,
                            &mut global_idx,
                            target,
                            highlight,
                            &ambiguous_instance_keys,
                        );
                    }
                }
            }
            InventoryTab::Nearby => {
                let nearby = self.nearby_containers();
                if nearby.is_empty() {
                    lines.push(InventoryBrowserLine::Section("— Nearby storage —".into()));
                    lines.push(InventoryBrowserLine::Hint(
                        "  (none within reach — walk up to a chest)".into(),
                    ));
                    lines.push(InventoryBrowserLine::Hint(
                        "  Select an on-person item, then m / Enter → move into chest.".into(),
                    ));
                } else {
                    let mut any_visible = false;
                    for nc in &nearby {
                        let shell = nc.rows.first();
                        let contents: Vec<&InventoryRow> = if filter.is_empty() {
                            nc.rows.iter().skip(1).collect()
                        } else {
                            let shell_hit = shell
                                .map(|s| {
                                    let f = filter.to_ascii_lowercase();
                                    let name = s
                                        .stack
                                        .display_name
                                        .as_deref()
                                        .unwrap_or("")
                                        .to_ascii_lowercase();
                                    let tid = s.stack.template_id.to_ascii_lowercase();
                                    name.contains(&f) || tid.contains(&f)
                                })
                                .unwrap_or(false);
                            if shell_hit {
                                nc.rows.iter().skip(1).collect()
                            } else {
                                nc.rows
                                    .iter()
                                    .skip(1)
                                    .filter(|r| stack_matches_filter(&r.stack, filter))
                                    .collect()
                            }
                        };
                        let shell_visible = filter.is_empty()
                            || shell
                                .map(|s| stack_matches_filter(&s.stack, filter))
                                .unwrap_or(false)
                            || !contents.is_empty();
                        if !shell_visible && shell.is_some() {
                            continue;
                        }
                        any_visible = true;
                        lines.push(InventoryBrowserLine::Blank);
                        let lock_note = if nc.view.locked && nc.view.accessible {
                            "  unlocked with your key"
                        } else if nc.view.locked {
                            "  locked"
                        } else {
                            ""
                        };
                        lines.push(InventoryBrowserLine::Section(format!(
                            "— {} ({:.0}m away){lock_note} —",
                            nc.view.display_name, nc.distance_m
                        )));
                        if !nc.view.accessible {
                            lines.push(InventoryBrowserLine::Hint(
                                "  locked — need the matching key (l to try)".into(),
                            ));
                        } else if nc.rows.is_empty() {
                            lines.push(InventoryBrowserLine::Hint(
                                "  (empty — switch to On person, select an item, m to move in)"
                                    .into(),
                            ));
                        } else if let Some(shell_row) = shell {
                            self.push_browser_item(
                                &mut lines,
                                shell_row,
                                &mut global_idx,
                                target,
                                highlight,
                                &ambiguous_instance_keys,
                            );
                            for row in contents {
                                self.push_browser_item(
                                    &mut lines,
                                    row,
                                    &mut global_idx,
                                    target,
                                    highlight,
                                    &ambiguous_instance_keys,
                                );
                            }
                        }
                    }
                    if !any_visible {
                        lines.push(InventoryBrowserLine::Section("— Nearby storage —".into()));
                        lines.push(InventoryBrowserLine::Hint(
                            "  (no matching items — clear filter with Esc)".into(),
                        ));
                    }
                }
            }
        }
        lines
    }

    /// Destinations for picking up a placed chest/crate into inventory.
    pub fn chest_pickup_destinations(&self, container_id: &str) -> Vec<MoveOption> {
        let mut opts = Vec::new();
        opts.push(MoveOption {
            label: "Relocate…".into(),
            kind: MoveOptionKind::RelocatePlaced {
                container_id: container_id.to_string(),
            },
        });
        opts.push(MoveOption {
            label: "On your person (loose)".into(),
            kind: MoveOptionKind::PickupPlaced {
                container_id: container_id.to_string(),
                nest_location: flatland_protocol::InventoryLocation::Root,
                nest_parent_instance_id: None,
            },
        });
        for (slot, item) in &self.worn {
            if item.category.as_deref() != Some("container") {
                continue;
            }
            if *slot == BodySlot::Waist || !Self::is_volume_container_stack(item) {
                continue;
            }
            let Some(parent_id) = item.item_instance_id else {
                continue;
            };
            let shell_name = item
                .display_name
                .clone()
                .unwrap_or_else(|| item.template_id.clone());
            opts.push(MoveOption {
                label: format!("{shell_name} (worn {})", body_slot_label(*slot)),
                kind: MoveOptionKind::PickupPlaced {
                    container_id: container_id.to_string(),
                    nest_location: flatland_protocol::InventoryLocation::Worn { slot: *slot },
                    nest_parent_instance_id: Some(parent_id),
                },
            });
            // Nested pouches inside the worn bag.
            Self::append_chest_pickup_nested(
                &mut opts,
                container_id,
                flatland_protocol::InventoryLocation::Worn { slot: *slot },
                item,
                &format!("in {shell_name}"),
            );
        }
        opts.push(MoveOption {
            label: "Cancel".into(),
            kind: MoveOptionKind::Cancel,
        });
        opts
    }

    fn append_chest_pickup_nested(
        opts: &mut Vec<MoveOption>,
        container_id: &str,
        location: flatland_protocol::InventoryLocation,
        parent: &flatland_protocol::ItemStack,
        context: &str,
    ) {
        for child in &parent.contents {
            if child.category.as_deref() != Some("container") {
                continue;
            }
            if !Self::is_volume_container_stack(child) {
                continue;
            }
            // Skip placeable nested chests — relocating into another chest is not useful.
            if child.world_placeable == Some(true) {
                continue;
            }
            let Some(child_id) = child.item_instance_id else {
                continue;
            };
            let name = child
                .display_name
                .clone()
                .unwrap_or_else(|| child.template_id.clone());
            opts.push(MoveOption {
                label: format!("{name} ({context})"),
                kind: MoveOptionKind::PickupPlaced {
                    container_id: container_id.to_string(),
                    nest_location: location.clone(),
                    nest_parent_instance_id: Some(child_id),
                },
            });
            Self::append_chest_pickup_nested(
                opts,
                container_id,
                location.clone(),
                child,
                &format!("in {name}"),
            );
        }
    }

    /// Build the "move to…" destination list for an item currently at `from`.
    pub fn move_destinations_for(
        &self,
        from: &flatland_protocol::InventoryLocation,
        from_parent_instance_id: Option<uuid::Uuid>,
        moving_instance_id: Option<uuid::Uuid>,
        moving_template_id: &str,
    ) -> Vec<MoveOption> {
        let mut opts = Vec::new();
        if *from != flatland_protocol::InventoryLocation::Root {
            opts.push(MoveOption {
                label: "On your person (loose)".into(),
                kind: MoveOptionKind::Move {
                    location: flatland_protocol::InventoryLocation::Root,
                    parent_instance_id: None,
                },
            });
        }
        for (slot, item) in &self.worn {
            if item.category.as_deref() != Some("container") {
                continue;
            }
            let location = flatland_protocol::InventoryLocation::Worn { slot: *slot };
            let shell_name = item
                .display_name
                .clone()
                .unwrap_or_else(|| item.template_id.clone());

            // Backpack and other worn volume containers — store directly inside the shell.
            if *slot != BodySlot::Waist
                && item.item_instance_id != moving_instance_id
                && Self::is_volume_container_stack(item)
            {
                Self::push_move_destination(
                    &mut opts,
                    format!("{shell_name} (worn {})", body_slot_label(*slot)),
                    location.clone(),
                    item.item_instance_id,
                    from,
                    from_parent_instance_id,
                );
            }

            // Belt loops only accept pouch attachments — not loose materials.
            if *slot == BodySlot::Waist
                && Self::attaches_to_belt_loop(moving_template_id)
                && item.item_instance_id != moving_instance_id
            {
                Self::push_move_destination(
                    &mut opts,
                    format!("{shell_name} (belt loop)"),
                    location.clone(),
                    item.item_instance_id,
                    from,
                    from_parent_instance_id,
                );
            }

            let context = if *slot == BodySlot::Waist {
                format!("on {shell_name}")
            } else {
                format!("in {shell_name}")
            };
            Self::append_nested_container_destinations(
                &mut opts,
                location,
                item,
                &context,
                from,
                from_parent_instance_id,
                moving_instance_id,
            );
        }
        for nc in self.nearby_containers() {
            if !nc.view.accessible {
                continue;
            }
            let location = flatland_protocol::InventoryLocation::Placed {
                container_id: nc.view.id.clone(),
            };
            Self::push_move_destination(
                &mut opts,
                format!("{} ({:.0}m away)", nc.view.display_name, nc.distance_m),
                location,
                nc.view.item_instance_id,
                from,
                from_parent_instance_id,
            );
        }
        let allow_drop = moving_instance_id
            .map(|id| !self.hand_equipped_instance_ids().contains(&id))
            .unwrap_or(true)
            && moving_instance_id
                .and_then(|id| self.stack_for_instance(id))
                .map(|stack| {
                    !self.key_drop_blocked(&stack) && stack.template_id != PROPERTY_DEED_TEMPLATE
                })
                .unwrap_or(
                    moving_template_id != KEY_TEMPLATE
                        && moving_template_id != PROPERTY_DEED_TEMPLATE,
                );
        if allow_drop {
            opts.push(MoveOption {
                label: "Drop on the ground".into(),
                kind: MoveOptionKind::Drop,
            });
        }
        opts.push(MoveOption {
            label: "Cancel".into(),
            kind: MoveOptionKind::Cancel,
        });
        opts
    }

    fn is_same_container_dest(
        dest_location: &flatland_protocol::InventoryLocation,
        dest_parent: Option<uuid::Uuid>,
        from: &flatland_protocol::InventoryLocation,
        from_parent: Option<uuid::Uuid>,
    ) -> bool {
        dest_location == from && dest_parent == from_parent
    }

    fn push_move_destination(
        opts: &mut Vec<MoveOption>,
        label: String,
        location: flatland_protocol::InventoryLocation,
        parent_instance_id: Option<uuid::Uuid>,
        from: &flatland_protocol::InventoryLocation,
        from_parent_instance_id: Option<uuid::Uuid>,
    ) {
        if Self::is_same_container_dest(
            &location,
            parent_instance_id,
            from,
            from_parent_instance_id,
        ) {
            return;
        }
        opts.push(MoveOption {
            label,
            kind: MoveOptionKind::Move {
                location,
                parent_instance_id,
            },
        });
    }

    fn is_volume_container_stack(stack: &flatland_protocol::ItemStack) -> bool {
        stack.capacity_volume.is_some_and(|c| c > 0.0)
    }

    fn attaches_to_belt_loop(template_id: &str) -> bool {
        matches!(template_id, "leather_pouch" | "dimensional_pouch")
    }

    fn append_nested_container_destinations(
        opts: &mut Vec<MoveOption>,
        location: flatland_protocol::InventoryLocation,
        container: &flatland_protocol::ItemStack,
        context: &str,
        from: &flatland_protocol::InventoryLocation,
        from_parent_instance_id: Option<uuid::Uuid>,
        moving_instance_id: Option<uuid::Uuid>,
    ) {
        for child in &container.contents {
            if Self::is_volume_container_stack(child)
                && child.item_instance_id != moving_instance_id
            {
                let name = child
                    .display_name
                    .clone()
                    .unwrap_or_else(|| child.template_id.clone());
                Self::push_move_destination(
                    opts,
                    format!("{name} ({context})"),
                    location.clone(),
                    child.item_instance_id,
                    from,
                    from_parent_instance_id,
                );
            }
            let nested_context = format!(
                "in {}",
                child.display_name.as_deref().unwrap_or(&child.template_id)
            );
            Self::append_nested_container_destinations(
                opts,
                location.clone(),
                child,
                &nested_context,
                from,
                from_parent_instance_id,
                moving_instance_id,
            );
        }
    }

    fn clamp_inventory_indices(&mut self) {
        let n = self.inventory_selectable_rows().len();
        self.inventory_menu_index = if n == 0 {
            0
        } else {
            self.inventory_menu_index.min(n - 1)
        };
        if let Some(picker) = &self.move_picker {
            let pn = picker.options.len();
            self.move_picker_index = if pn == 0 {
                0
            } else {
                self.move_picker_index.min(pn - 1)
            };
        }
    }

    /// Drop interior map layers whenever the player is outdoors.
    /// Restores outdoor z-bands saved before [`Self::sync_interior_z_bands`] overwrote them.
    /// Tick deltas never refresh `z_platforms`; without restore, stale interior platforms
    /// force `build_grid` into a full-map z pass on every click until client restart.
    fn sync_interior_map_context(&mut self) {
        if self.effective_inside_building().is_none() {
            self.interior_map = None;
            if let Some((platforms, transitions)) = self.z_bands_outdoor_backup.take() {
                self.z_platforms = platforms;
                self.z_transitions = transitions;
            }
            return;
        }
        self.sync_interior_z_bands();
    }

    /// While indoors, z-bands come from the active interior blueprint (multi-floor stairs).
    fn sync_interior_z_bands(&mut self) {
        if self.effective_inside_building().is_some() {
            if let Some(map) = &self.interior_map {
                if !map.z_platforms.is_empty() || !map.z_transitions.is_empty() {
                    if self.z_bands_outdoor_backup.is_none() {
                        self.z_bands_outdoor_backup = Some((
                            std::mem::take(&mut self.z_platforms),
                            std::mem::take(&mut self.z_transitions),
                        ));
                    }
                    self.z_platforms = map.z_platforms.clone();
                    self.z_transitions = map.z_transitions.clone();
                }
            }
        }
    }

    fn apply_snapshot_fields(
        &mut self,
        snapshot: &flatland_protocol::Snapshot,
        entity_id: EntityId,
    ) {
        self.tick = snapshot.tick;
        self.chunk_rev = snapshot.chunk_rev;
        self.content_rev = snapshot.content_rev;
        self.publish_rev = snapshot.publish_rev;
        self.resource_nodes = snapshot.resource_nodes.clone();
        self.ground_drops = snapshot.ground_drops.clone();
        self.placed_containers = snapshot.placed_containers.clone();
        self.world_x0 = snapshot.world_x0;
        self.world_y0 = snapshot.world_y0;
        self.world_width_m = snapshot.world_width_m;
        self.world_height_m = snapshot.world_height_m;
        self.world_clock = snapshot.world_clock;
        self.terrain_zones = snapshot.terrain_zones.clone();
        self.z_platforms = snapshot.z_platforms.clone();
        self.z_transitions = snapshot.z_transitions.clone();
        // Snapshot is authoritative for the current context; drop any prior enter/leave stash.
        self.z_bands_outdoor_backup = None;
        self.buildings = snapshot.buildings.clone();
        self.doors = snapshot.doors.clone();
        self.interior_map = snapshot.interior_map.clone();
        self.npcs = snapshot.npcs.clone();
        self.blueprints = snapshot.blueprints.clone();
        self.building_materials = snapshot.building_materials.clone();
        self.sync_inventory_from_stacks(&snapshot.inventory);
        self.player = snapshot
            .entities
            .iter()
            .find(|e| e.id == entity_id)
            .cloned();
        self.entities = snapshot.entities.clone();
        self.quest_log = snapshot.quest_log.clone();
        self.apply_hired_workers(snapshot.hired_workers.clone());
        self.interactables = snapshot.interactables.clone();
        self.ledger = snapshot.ledger.clone();
        self.career = snapshot.career.clone();
        self.combat_fx = snapshot.combat_fx.clone();
        self.property_zones = snapshot.property_zones.clone();
        self.tax_zones = snapshot.tax_zones.clone();
        self.growth_zones = snapshot.growth_zones.clone();
        self.biome_zones = snapshot.biome_zones.clone();
        self.terrain_kind_nav = snapshot.terrain_kind_nav.clone();
        self.property_plots = snapshot.property_plots.clone();
        self.property_plot_settings = snapshot.property_plot_settings.clone();
        // If welcome/reconnect lands indoors, seed an empty outdoor restore target so
        // sync_interior_z_bands does not stash interior snapshot bands as "outdoor".
        if self.effective_inside_building().is_some() {
            self.z_bands_outdoor_backup = Some((Vec::new(), Vec::new()));
        }
        self.sync_interior_map_context();
        self.refresh_whisper_range();
    }

    /// Re-derive inventory selection state after a snapshot/tick — chests that
    /// went out of range or got locked simply vanish from the row list, and the
    /// move picker (if any) closes once its item is no longer reachable.
    fn refresh_inventory_ui(&mut self) {
        if let Some(picker) = &self.move_picker {
            let instance_id = picker.item_instance_id;
            let still_exists = self
                .inventory_selectable_rows()
                .iter()
                .any(|r| r.stack.item_instance_id == Some(instance_id));
            if !still_exists {
                self.move_picker = None;
                self.show_move_picker = false;
            }
        }
        if let Some(picker) = &self.destroy_picker {
            let instance_id = picker.item_instance_id;
            let still_exists = self
                .inventory_selectable_rows()
                .iter()
                .any(|r| r.stack.item_instance_id == Some(instance_id));
            if !still_exists {
                self.destroy_picker = None;
                self.show_destroy_picker = false;
                self.destroy_confirm_pending = false;
            }
        }
        self.clamp_inventory_indices();
    }

    /// Replace the hired-worker list from a snapshot/delta.
    ///
    /// Keeps a stable sort and remaps `workers_menu_index` by instance id so the
    /// selected worker (and its step line) does not jump when the server rebuilds
    /// the list.
    fn apply_hired_workers(&mut self, mut workers: Vec<flatland_protocol::HiredWorkerView>) {
        let selected_id = self
            .hired_workers
            .get(self.workers_menu_index)
            .map(|w| w.instance_id.clone());
        workers.sort_by(|a, b| a.instance_id.cmp(&b.instance_id));
        let now = Instant::now();
        for w in &workers {
            let prev_err = self
                .hired_workers
                .iter()
                .find(|p| p.instance_id == w.instance_id)
                .and_then(|p| p.last_error.as_deref());
            let new_err = w.last_error.as_deref();
            if new_err != prev_err {
                if let Some(err) = new_err {
                    if !worker_error_is_transient(err) {
                        self.push_log(format!("Worker {}: {err}", w.label));
                    }
                }
            }
        }
        let mut next_display = BTreeMap::new();
        let mut next_errors = BTreeMap::new();
        for w in &workers {
            let mut sticky = self
                .worker_step_display
                .remove(&w.instance_id)
                .unwrap_or_else(|| StickyWorkerStep::from_label(w.step_label.clone()));
            sticky.observe(&w.step_label, now);
            next_display.insert(w.instance_id.clone(), sticky);

            let mut err_sticky = self
                .worker_error_display
                .remove(&w.instance_id)
                .unwrap_or_default();
            err_sticky.observe(w.last_error.as_deref(), now);
            if err_sticky.shown(now).is_some() {
                next_errors.insert(w.instance_id.clone(), err_sticky);
            }
        }
        self.worker_step_display = next_display;
        self.worker_error_display = next_errors;
        self.hired_workers = workers;
        self.sync_worker_take_picker_from_hired();
        if let Some(id) = selected_id {
            if let Some(idx) = self.hired_workers.iter().position(|w| w.instance_id == id) {
                self.workers_menu_index = idx;
                return;
            }
        }
        if self.workers_menu_index >= self.hired_workers.len() {
            self.workers_menu_index = self.hired_workers.len().saturating_sub(1);
        }
    }

    /// Keep the take-from-worker sheet in sync after hired-worker inventory updates.
    fn sync_worker_take_picker_from_hired(&mut self) {
        if !self.show_worker_take_picker {
            return;
        }
        let Some(picker) = self.worker_take_picker.clone() else {
            return;
        };
        let Some(worker) = self
            .hired_workers
            .iter()
            .find(|w| w.instance_id == picker.worker_instance_id)
            .cloned()
        else {
            self.show_worker_take_picker = false;
            self.worker_take_picker = None;
            self.worker_take_picker_index = 0;
            return;
        };
        let options: Vec<WorkerGiveOption> = worker
            .inventory
            .iter()
            .filter_map(|stack| {
                let item_instance_id = stack.item_instance_id?;
                let label = stack
                    .display_name
                    .clone()
                    .unwrap_or_else(|| stack.template_id.clone());
                let label = if stack.quantity > 1 {
                    format!("{label} ×{}", stack.quantity)
                } else {
                    label
                };
                Some(WorkerGiveOption {
                    item_instance_id,
                    label,
                    quantity: stack.quantity,
                    template_id: stack.template_id.clone(),
                })
            })
            .collect();
        if options.is_empty() {
            self.show_worker_take_picker = false;
            self.worker_take_picker = None;
            self.worker_take_picker_index = 0;
            return;
        }
        let prev_id = picker
            .options
            .get(self.worker_take_picker_index)
            .map(|o| o.item_instance_id);
        let idx = prev_id
            .and_then(|id| options.iter().position(|o| o.item_instance_id == id))
            .unwrap_or(0)
            .min(options.len().saturating_sub(1));
        let max_qty = options.get(idx).map(|o| o.quantity.max(1)).unwrap_or(1);
        let quantity = picker.quantity.clamp(1, max_qty);
        self.worker_take_picker_index = idx;
        self.worker_take_picker = Some(WorkerTakePicker {
            worker_instance_id: picker.worker_instance_id,
            worker_label: picker.worker_label,
            options,
            quantity,
        });
    }

    /// Held coarse step label for the workers menu (`step:` line).
    pub fn worker_step_display_label(&self, worker_instance_id: &str) -> &str {
        self.worker_step_display
            .get(worker_instance_id)
            .map(|s| s.shown.as_str())
            .or_else(|| {
                self.hired_workers
                    .iter()
                    .find(|w| w.instance_id == worker_instance_id)
                    .map(|w| w.step_label.as_str())
            })
            .unwrap_or("")
    }

    /// Held error line for workers UI (detail + compact).
    pub fn worker_error_display_label(&self, worker_instance_id: &str) -> Option<&str> {
        let now = Instant::now();
        self.worker_error_display
            .get(worker_instance_id)
            .and_then(|s| s.shown(now))
            .or_else(|| {
                self.hired_workers
                    .iter()
                    .find(|w| w.instance_id == worker_instance_id)
                    .and_then(|w| w.last_error.as_deref())
                    .filter(|e| !worker_error_is_transient(e) && !worker_error_is_hud_noise(e))
            })
            .filter(|e| !worker_error_is_hud_noise(e))
    }

    fn apply_combat_hud(&mut self, combat: &CombatHud) {
        self.in_combat = combat.in_combat;
        self.auto_attack = combat.auto_attack;
        self.combat_has_los = combat.has_los;
        self.attack_cd_ticks = combat.attack_cd_ticks;
        self.gcd_ticks = combat.gcd_ticks;
        self.weapon_ability_id = combat.ability_id.clone();
        self.mainhand_template_id = combat.mainhand_template_id.clone();
        self.mainhand_label = combat.mainhand_label.clone();
        self.mainhand_instance_id = combat.mainhand_instance_id;
        self.offhand_template_id = combat.offhand_template_id.clone();
        self.offhand_label = combat.offhand_label.clone();
        self.offhand_instance_id = combat.offhand_instance_id;
        self.mainhand_hand_slots = if combat.mainhand_hand_slots == 0 {
            1
        } else {
            combat.mainhand_hand_slots
        };
        self.defense = combat.defense.clone();
        self.worn = combat.worn.iter().cloned().collect();
        self.carry_mass = combat.carry_mass;
        self.carry_mass_max = combat.carry_mass_max;
        self.encumbrance = combat.encumbrance;
        self.cast_progress = combat.cast.clone();
        self.timed_channel = combat.timed_channel.clone();
        self.plot_build_offer = combat.plot_build.clone();
        self.ability_cooldowns = combat.ability_cooldowns.clone();
        self.blocking_active = combat.blocking_active;
        self.max_target_slots = combat.max_target_slots.max(1);
        self.combat_slots = combat.slots.clone();
        self.rotation_presets = combat.rotation_presets.clone();
        self.known_abilities = combat.known_abilities.clone();
        self.ability_meta = combat
            .ability_meta
            .iter()
            .cloned()
            .map(|meta| (meta.id.clone(), meta))
            .collect();
        self.ability_mastery = combat
            .ability_mastery
            .iter()
            .cloned()
            .map(|row| (row.ability_id.clone(), row))
            .collect();
        self.hotbar = combat.hotbar.clone();
        self.max_abilities_per_rotation = combat.max_abilities_per_rotation;
        self.keychain_stacks = combat.keychain.clone();
        self.whisper_pouch_stacks = combat.whisper_pouch.clone();
        self.combat_target_detail = combat.target.clone();
        self.statuses = combat.statuses.clone();
        self.combat_target = combat.target_entity_id;
        if combat.progression_xp_base > 0.0 {
            self.progression_curve = Some(flatland_protocol::ProgressionCurve {
                baseline_display: combat.progression_baseline,
                xp_base: combat.progression_xp_base,
                xp_growth: combat.progression_xp_growth,
            });
        }
        if let Some(xp) = &combat.progression_xp {
            if let Some(player) = &mut self.player {
                player.progression_xp = Some(xp.clone());
                if let Some(attrs) = combat.attributes {
                    player.attributes = Some(attrs);
                }
                if let Some(skills) = &combat.skills {
                    player.skills = Some(skills.clone());
                }
            }
        }
        if let Some(label) = &combat.target_label {
            self.combat_target_label = Some(label.clone());
        } else if let Some(id) = combat.target_entity_id {
            self.combat_target_label = self
                .entities
                .iter()
                .find(|e| e.id == id)
                .map(|e| e.label.clone())
                .or_else(|| self.combat_target_label.clone());
        }
        self.refresh_inventory_ui();
    }

    /// Entity id assigned to a combat slot (from server HUD).
    pub fn target_for_slot(&self, slot: u8) -> Option<EntityId> {
        self.combat_slots
            .iter()
            .find(|s| s.slot_index == slot)
            .and_then(|s| s.target_entity_id)
            .or_else(|| if slot == 1 { self.combat_target } else { None })
    }

    /// True if `ability_id` may be cast at a free ground point (`aim_mode` `ground` or `either`).
    pub fn ability_allows_ground(&self, ability_id: &str) -> bool {
        self.ability_meta
            .get(ability_id)
            .map(|meta| matches!(meta.aim_mode.as_str(), "ground" | "either"))
            // Until HUD meta syncs, still allow ground cast when an aim point is armed —
            // the server validates aim_mode.
            .unwrap_or(self.ground_target.is_some())
    }

    /// True if `ability_id` requires a free ground point (`aim_mode` `ground`).
    pub fn ability_requires_ground(&self, ability_id: &str) -> bool {
        self.ability_meta
            .get(ability_id)
            .map(|meta| meta.aim_mode == "ground")
            .unwrap_or(false)
    }

    /// True when the ability may be placed in an auto-rotation preset.
    /// Missing meta (pre-sync) defaults to eligible; server still validates.
    pub fn ability_auto_rotation_eligible(&self, ability_id: &str) -> bool {
        self.ability_meta
            .get(ability_id)
            .map(|meta| meta.auto_rotation_eligible)
            .unwrap_or(true)
    }

    /// Set the local free-aim ground target (world meters, Shift+click on open ground).
    pub fn set_ground_target(&mut self, x: f32, y: f32) {
        self.ground_target = Some((x, y, 0.0));
    }

    /// Clear the local free-aim ground target.
    pub fn clear_ground_target(&mut self) {
        self.ground_target = None;
    }

    /// Ability bound to hotbar key `1`–`9` from server-persisted state.
    /// May be an ability id or `item:<template_id>` consumable binding.
    pub fn hotbar_ability(&self, slot_1_to_9: u8) -> Option<&str> {
        if !(1..=9).contains(&slot_1_to_9) {
            return None;
        }
        self.hotbar
            .get((slot_1_to_9 - 1) as usize)
            .and_then(|a| a.as_deref())
            .filter(|id| !id.is_empty())
    }

    /// Short label for a hotbar slot (ability id, or consumable name × qty).
    pub fn hotbar_slot_label(&self, slot_1_to_9: u8) -> Option<String> {
        let binding = self.hotbar_ability(slot_1_to_9)?;
        if let Some(template_id) = flatland_protocol::hotbar_consumable_template(binding) {
            let name = self
                .inventory_hints
                .get(template_id)
                .map(|h| h.display_name.as_str())
                .unwrap_or(template_id);
            let qty = self.inventory.get(template_id).copied().unwrap_or(0);
            Some(format!("{name}×{qty}"))
        } else {
            Some(binding.to_string())
        }
    }

    /// Known abilities plus current weapon ability (for loadout / rotation pickers).
    pub fn loadout_ability_choices(&self) -> Vec<String> {
        let mut out = self.known_abilities.clone();
        let weapon = self.weapon_ability_id.trim();
        if !weapon.is_empty() && !out.iter().any(|a| a == weapon) {
            out.push(weapon.to_string());
        }
        out
    }

    /// Hotbar bind candidates: learned abilities, then on-person consumables.
    pub fn loadout_hotbar_choices(&self) -> Vec<LoadoutHotbarChoice> {
        let mut out = Vec::new();
        for ability in self.loadout_ability_choices() {
            let meta = if ability == self.weapon_ability_id {
                Some("weapon".into())
            } else {
                None
            };
            out.push(LoadoutHotbarChoice {
                binding: ability.clone(),
                label: ability,
                meta,
            });
        }
        let mut consumables: Vec<(String, String, u32)> = Vec::new();
        for stack in &self.inventory_stacks {
            if Self::stack_is_item_grant(stack) {
                continue;
            }
            if self.inventory_item_category(&stack.template_id) != Some("consumable") {
                continue;
            }
            let qty = stack.quantity.max(1);
            if let Some((_, _, existing)) = consumables
                .iter_mut()
                .find(|(id, _, _)| id == &stack.template_id)
            {
                *existing = existing.saturating_add(qty);
            } else {
                let label = stack
                    .display_name
                    .clone()
                    .or_else(|| {
                        self.inventory_hints
                            .get(&stack.template_id)
                            .map(|h| h.display_name.clone())
                    })
                    .unwrap_or_else(|| stack.template_id.clone());
                consumables.push((stack.template_id.clone(), label, qty));
            }
        }
        consumables.sort_by(|a, b| a.1.cmp(&b.1).then_with(|| a.0.cmp(&b.0)));
        for (template_id, label, qty) in consumables {
            out.push(LoadoutHotbarChoice {
                binding: flatland_protocol::hotbar_consumable_binding(&template_id),
                label: format!("{label} ×{qty}"),
                meta: Some("use".into()),
            });
        }
        out
    }

    /// Hostile wildlife / monsters for T1 (`Tab`).
    pub fn t1_candidates(&self) -> Vec<(EntityId, String)> {
        self.combat_candidates()
    }

    /// Allies first, then monsters, for T2 (`Shift+Tab`). Includes self for heals.
    pub fn t2_candidates(&self) -> Vec<(EntityId, String)> {
        let (px, py) = self.player_position();
        let dist = |id: EntityId| {
            self.entities
                .iter()
                .find(|e| e.id == id)
                .map(|e| distance(px, py, e.transform.position.x, e.transform.position.y))
                .unwrap_or(f32::MAX)
        };

        let mut allies = Vec::new();
        // Self first — heal_touch on T2.
        if let Some(me) = self.player.as_ref() {
            let alive = me
                .vitals
                .as_ref()
                .map(|v| v.life_state == LifeState::Alive && v.health > 0.0)
                .unwrap_or(true);
            if alive {
                allies.push((self.entity_id, "Yourself".into()));
            }
        }
        for entity in &self.entities {
            if entity.id == self.entity_id {
                continue;
            }
            if entity.vitals.is_some() {
                let alive = entity
                    .vitals
                    .as_ref()
                    .map(|v| v.life_state == LifeState::Alive && v.health > 0.0)
                    .unwrap_or(true);
                if alive {
                    allies.push((entity.id, entity.label.clone()));
                }
            }
        }
        allies.sort_by(|(a, _), (b, _)| {
            if *a == self.entity_id {
                return std::cmp::Ordering::Less;
            }
            if *b == self.entity_id {
                return std::cmp::Ordering::Greater;
            }
            dist(*a)
                .partial_cmp(&dist(*b))
                .unwrap_or(std::cmp::Ordering::Equal)
        });

        let mut monsters = self.combat_candidates();
        monsters.retain(|(id, _)| !allies.iter().any(|(aid, _)| aid == id));
        allies.into_iter().chain(monsters).collect()
    }

    fn candidates_for_slot(&self, slot_index: u8) -> Vec<(EntityId, String)> {
        match slot_index {
            2 => self.t2_candidates(),
            _ => self.t1_candidates(),
        }
    }

    /// Nearest combat candidate within `radius_m` of world click (gfx click-to-target).
    pub fn pick_combat_target_at(
        &self,
        wx: f32,
        wy: f32,
        slot_index: u8,
        radius_m: f32,
    ) -> Option<(EntityId, String)> {
        let mut best: Option<(f32, EntityId, String)> = None;
        for (id, label) in self.candidates_for_slot(slot_index) {
            let Some(entity) = self.entities.iter().find(|e| e.id == id) else {
                // NPCs may only appear in NpcView — fall back to npc list coords.
                if let Some(npc) = self.npcs.iter().find(|n| n.entity_id == Some(id)) {
                    let d = distance(wx, wy, npc.x, npc.y);
                    if d <= radius_m {
                        best = match best {
                            Some((bd, _, _)) if bd <= d => best,
                            _ => Some((d, id, label)),
                        };
                    }
                }
                continue;
            };
            let d = distance(
                wx,
                wy,
                entity.transform.position.x,
                entity.transform.position.y,
            );
            if d <= radius_m {
                best = match best {
                    Some((bd, _, _)) if bd <= d => best,
                    _ => Some((d, id, label)),
                };
            }
        }
        best.map(|(_, id, label)| (id, label))
    }

    /// Full client reset after Welcome (initial connect or reconnect).
    pub(crate) fn restore_from_welcome(
        &mut self,
        session_id: SessionId,
        entity_id: EntityId,
        snapshot: &flatland_protocol::Snapshot,
    ) {
        self.clear_harvest_state();
        self.disconnect_reason = None;
        self.show_stats = false;
        self.show_craft_menu = false;
        self.show_shop_menu = false;
        self.shop_catalog = None;
        self.show_inventory_menu = false;
        self.session_id = session_id;
        self.entity_id = entity_id;
        self.connected = true;
        self.apply_snapshot_fields(snapshot, entity_id);
        if let Some(combat) = &snapshot.combat {
            self.apply_combat_hud(combat);
            let stacks = self.inventory_stacks.clone();
            self.sync_inventory_from_stacks(&stacks);
        }
    }

    fn apply_tick_fields(&mut self, delta: &flatland_protocol::TickDelta, entity_id: EntityId) {
        self.tick = delta.tick;
        self.world_clock = delta.world_clock;

        // Degenerate AOI tick (observer missing server-side): keep welcome snapshot layers.
        if delta.entities.is_empty() {
            self.ground_drops = delta.ground_drops.clone();
            self.combat_fx = delta.combat_fx.clone();
            self.property_plots = delta.property_plots.clone();
            self.apply_terrain_overlays(&delta.terrain_overlays);
            if let Some(combat) = &delta.combat {
                self.apply_combat_hud(combat);
                let stacks = self.inventory_stacks.clone();
                self.sync_inventory_from_stacks(&stacks);
            }
            // Peer vanished from AOI — drop directed whisper.
            self.refresh_whisper_range();
            return;
        }
        if !delta.buildings.is_empty() {
            self.buildings = delta.buildings.clone();
        }
        if !delta.blueprints.is_empty() {
            self.blueprints = delta.blueprints.clone();
        }
        if !delta.building_materials.is_empty() {
            self.building_materials = delta.building_materials.clone();
        }
        self.sync_inventory_from_stacks(&delta.inventory);

        if let Some(updated) = delta.entities.iter().find(|e| e.id == entity_id) {
            self.player = Some(updated.clone());
        }
        self.entities = delta.entities.clone();
        if self.player.is_none() {
            self.player = self.entities.iter().find(|e| e.id == entity_id).cloned();
        }

        self.sync_interior_map_context();

        // Static world layers: ticks often omit these (indoors, or unchanged).
        // Never wipe the welcome snapshot with an empty vec — except when indoors,
        // where empty means "no nodes in this building" (clear outdoor leftovers).
        if !delta.resource_nodes.is_empty() {
            self.resource_nodes = delta.resource_nodes.clone();
        } else if delta.interior_map.is_some()
            || self.effective_inside_building().is_some()
        {
            self.resource_nodes = delta.resource_nodes.clone();
        }
        self.ground_drops = delta.ground_drops.clone();
        // Always replace — empty indoors means no chests in this building (do not keep outdoor ghosts).
        self.placed_containers = delta.placed_containers.clone();
        if !delta.doors.is_empty() {
            self.doors = delta.doors.clone();
        }
        if self.effective_inside_building().is_some() {
            if let Some(map) = &delta.interior_map {
                self.interior_map = Some(map.clone());
            }
        } else {
            self.interior_map = None;
        }
        self.sync_interior_z_bands();
        // Always replace NPC AOI — empty means none in range (do not keep ghosts).
        self.npcs = delta.npcs.clone();
        if !delta.quest_log.is_empty() {
            self.quest_log = delta.quest_log.clone();
        }
        self.apply_hired_workers(delta.hired_workers.clone());
        if !delta.interactables.is_empty() {
            self.interactables = delta.interactables.clone();
        }
        if delta.ledger.is_some() {
            self.ledger = delta.ledger.clone();
        }
        if delta.career.is_some() {
            self.career = delta.career.clone();
        }
        self.combat_fx = delta.combat_fx.clone();
        // Empty = unchanged (server may stagger plot rebuilds); non-empty replaces.
        if !delta.property_plots.is_empty() {
            self.property_plots = delta.property_plots.clone();
        }
        self.apply_terrain_overlays(&delta.terrain_overlays);
        if let Some(combat) = &delta.combat {
            self.apply_combat_hud(combat);
            let stacks = self.inventory_stacks.clone();
            self.sync_inventory_from_stacks(&stacks);
        } else {
            self.refresh_inventory_ui();
        }
        self.refresh_whisper_range();
    }

    /// Merge runtime cultivate overlays into `terrain_zones` (ids prefixed `rt:`).
    /// Always replaces prior `rt:` entries with the server's near-set (empty = none nearby).
    fn apply_terrain_overlays(&mut self, overlays: &[TerrainZoneView]) {
        self.terrain_zones
            .retain(|z| !z.id.starts_with("rt:"));
        self.terrain_zones.extend(overlays.iter().cloned());
    }

    /// End directed whisper when the peer is farther than interact range (or missing).
    /// Each client runs this locally so both players drop whisper mode when either walks away.
    fn refresh_whisper_range(&mut self) {
        let crate::social::ChatThreadKind::Whisper { peer } = self.social_chat.thread else {
            return;
        };
        let (px, py) = self.player_position();
        let in_range = self.entities.iter().any(|e| {
            e.id == peer
                && distance(
                    px,
                    py,
                    e.transform.position.x,
                    e.transform.position.y,
                ) <= INTERACTION_RADIUS_M
        });
        if !in_range {
            self.social_chat.cancel_whisper_out_of_range();
        }
    }

    /// Wildlife and other combat targets visible in AOI (`NpcView.entity_id`).
    pub fn combat_candidates(&self) -> Vec<(EntityId, String)> {
        let (px, py) = self.player_position();
        let mut out = Vec::new();
        for npc in &self.npcs {
            let Some(eid) = npc.entity_id else {
                continue;
            };
            let alive = npc.life_state.is_none_or(|s| s == LifeState::Alive);
            let has_hp = npc.hp_pct.is_none_or(|h| h > 0.0);
            if alive && has_hp {
                out.push((eid, npc.label.clone()));
            }
        }
        out.sort_by(|(a_id, a_label), (b_id, b_label)| {
            let dist = |id: EntityId| {
                self.entities
                    .iter()
                    .find(|e| e.id == id)
                    .map(|e| distance(px, py, e.transform.position.x, e.transform.position.y))
                    .unwrap_or(f32::MAX)
            };
            dist(*a_id)
                .partial_cmp(&dist(*b_id))
                .unwrap_or(std::cmp::Ordering::Equal)
                .then_with(|| a_label.cmp(b_label))
                .then_with(|| a_id.cmp(b_id))
        });
        out
    }

    pub fn refresh_combat_target_label(&mut self) {
        let Some(id) = self.combat_target else {
            return;
        };
        if let Some((_, label)) = self
            .combat_candidates()
            .into_iter()
            .find(|(eid, _)| *eid == id)
        {
            self.combat_target_label = Some(label);
        } else if let Some(label) = self
            .entities
            .iter()
            .find(|e| e.id == id)
            .map(|e| e.label.clone())
        {
            self.combat_target_label = Some(label);
        }
    }

    pub fn active_quest_entries(&self) -> Vec<&flatland_protocol::QuestLogEntry> {
        self.quest_log
            .iter()
            .filter(|q| q.status == flatland_protocol::QuestStatusView::Active)
            .collect()
    }

    /// True when the observer has at least one free lodging slot (max workers = beds).
    pub fn has_worker_lodging(&self) -> bool {
        self.free_worker_lodging_slots() > 0
    }

    /// Owned lodging capacity minus currently hired workers.
    pub fn free_worker_lodging_slots(&self) -> i64 {
        let slots: u32 = self
            .placed_containers
            .iter()
            .filter(|c| match (self.character_id, c.owner_character_id) {
                (Some(me), Some(owner)) => me == owner,
                (Some(_), None) => false,
                (None, _) => c.worker_lodging_capacity.unwrap_or(0) > 0,
            })
            .map(|c| c.worker_lodging_capacity.unwrap_or(0))
            .sum();
        let used = self.hired_workers.len() as u32;
        slots as i64 - used as i64
    }

    /// Display names of hired workers assigned to this lodging container.
    pub fn lodging_occupant_labels(&self, container_id: &str) -> Vec<String> {
        let mut names: Vec<String> = self
            .hired_workers
            .iter()
            .filter(|w| w.lodging_container_id.as_deref() == Some(container_id))
            .map(|w| w.label.clone())
            .collect();
        names.sort();
        names
    }

    /// Compact lodging occupancy for labels: `"Elda, Ana"`, `"vacant"`, or `""` if not lodging.
    pub fn lodging_occupancy_label(&self, container_id: &str) -> Option<String> {
        let is_lodging = self
            .placed_containers
            .iter()
            .find(|c| c.id == container_id)
            .is_some_and(|c| c.worker_lodging_capacity.unwrap_or(0) > 0);
        if !is_lodging {
            return None;
        }
        let names = self.lodging_occupant_labels(container_id);
        Some(if names.is_empty() {
            "vacant".into()
        } else {
            names.join(", ")
        })
    }

    pub fn tracked_quest(&self) -> Option<&flatland_protocol::QuestLogEntry> {
        self.quest_log
            .iter()
            .find(|q| q.is_tracked && q.status == flatland_protocol::QuestStatusView::Active)
            .or_else(|| {
                self.quest_log
                    .iter()
                    .find(|q| q.status == flatland_protocol::QuestStatusView::Active)
            })
    }

    /// True when a lockable exterior door is within interact range (prefer over loadout `l`).
    pub fn nearby_lockable_door(&self) -> bool {
        let (px, py) = self.player_position();
        self.doors
            .iter()
            .any(|d| d.lock_id.is_some() && (d.x - px).hypot(d.y - py) <= 3.5)
    }

    /// True when an open player-house door is in range for Enter-to-go-inside.
    pub fn nearby_open_player_door(&self) -> bool {
        if self.effective_inside_building().is_some() {
            return false;
        }
        let (px, py) = self.player_position();
        self.doors.iter().any(|d| {
            if !d.open || d.locked {
                return false;
            }
            let player_house = self
                .buildings
                .iter()
                .find(|b| b.id == d.building_id)
                .is_some_and(|b| b.tags.iter().any(|t| t == "player_built"));
            player_house && (d.x - px).hypot(d.y - py) <= 3.5
        })
    }

    /// True when inside a player house near the exterior portal (Enter exits freely).
    pub fn nearby_player_exit_door(&self) -> bool {
        let Some(bid) = self.effective_inside_building() else {
            return false;
        };
        let (px, py) = self.player_position();
        self.doors.iter().any(|d| {
            if d.building_id != bid || d.portal.is_none() {
                return false;
            }
            let player_house = self
                .buildings
                .iter()
                .find(|b| b.id == d.building_id)
                .is_some_and(|b| b.tags.iter().any(|t| t == "player_built"));
            player_house && (d.x - px).hypot(d.y - py) <= 1.5
        })
    }

    /// Nearest interactable target for `f` (doors, NPCs, well, shallow water).
    pub fn nearest_interact_target(&self) -> Option<String> {
        let (px, py) = self.player_position();
        let inside = self.effective_inside_building();

        #[derive(Clone, Copy, PartialEq, Eq)]
        enum Kind {
            Player,
            Npc,
            HiredWorker,
            QuestBoard,
            ExitDoor,
            EnterDoor,
            Well,
            Water,
        }

        fn kind_priority(kind: Kind) -> u8 {
            match kind {
                Kind::Player => 0,
                Kind::Npc => 0,
                Kind::HiredWorker => 0,
                Kind::QuestBoard => 1,
                Kind::ExitDoor => 2,
                Kind::EnterDoor => 3,
                Kind::Well => 4,
                Kind::Water => 5,
            }
        }

        let mut best: Option<(f32, Kind, String)> = None;

        let mut consider = |dist: f32, max: f32, kind: Kind, id: String| {
            if dist > max {
                return;
            }
            let replace = match best {
                None => true,
                Some((bd, _bk, _)) if dist < bd - 0.05 => true,
                Some((bd, bk, _)) if (dist - bd).abs() <= 0.05 => {
                    kind_priority(kind) < kind_priority(bk)
                }
                _ => false,
            };
            if replace {
                best = Some((dist, kind, id));
            }
        };

        for npc in &self.npcs {
            consider(
                distance(px, py, npc.x, npc.y),
                INTERACTION_RADIUS_M,
                Kind::Npc,
                npc.id.clone(),
            );
        }

        for worker in &self.hired_workers {
            consider(
                distance(px, py, worker.x, worker.y),
                INTERACTION_RADIUS_M,
                Kind::HiredWorker,
                worker.instance_id.clone(),
            );
        }

        for entity in &self.entities {
            if entity.id == self.entity_id || entity.vitals.is_none() || entity.label.trim().is_empty()
            {
                continue;
            }
            // Hired workers are NPCs with their own UI — not Whisper/Trade peers.
            if self
                .hired_workers
                .iter()
                .any(|w| w.entity_id == entity.id)
            {
                continue;
            }
            consider(
                distance(
                    px,
                    py,
                    entity.transform.position.x,
                    entity.transform.position.y,
                ),
                INTERACTION_RADIUS_M,
                Kind::Player,
                entity.id.to_string(),
            );
        }

        for door in &self.doors {
            if let Some(ref bid) = inside {
                if door.building_id != *bid {
                    continue;
                }
                let is_exit = door.portal.is_some();
                let max = if is_exit {
                    INTERACTION_RADIUS_M
                } else {
                    DOOR_INTERACTION_RADIUS_M
                };
                let kind = if is_exit {
                    Kind::ExitDoor
                } else {
                    Kind::EnterDoor
                };
                consider(distance(px, py, door.x, door.y), max, kind, door.id.clone());
                continue;
            }
            consider(
                distance(px, py, door.x, door.y),
                DOOR_INTERACTION_RADIUS_M,
                Kind::EnterDoor,
                door.id.clone(),
            );
        }

        if inside.is_none() {
            for inter in &self.interactables {
                if inter.kind == "quest_board" {
                    consider(
                        distance(px, py, inter.x, inter.y),
                        QUEST_BOARD_INTERACTION_RADIUS_M,
                        Kind::QuestBoard,
                        inter.id.clone(),
                    );
                }
            }
            for building in &self.buildings {
                if !building.tags.iter().any(|t| t == "well") {
                    continue;
                }
                consider(
                    distance(px, py, building.x, building.y),
                    INTERACTION_RADIUS_M,
                    Kind::Well,
                    building.id.clone(),
                );
            }
            if self.in_shallow_water() {
                consider(
                    0.0,
                    INTERACTION_RADIUS_M,
                    Kind::Water,
                    "water_source".into(),
                );
            }
        }

        best.map(|(_, _, id)| id)
    }

    /// Nearest quest board and distance (any distance), for out-of-range feedback.
    pub fn nearest_quest_board(&self) -> Option<(String, f32)> {
        if self.effective_inside_building().is_some() {
            return None;
        }
        let (px, py) = self.player_position();
        self.interactables
            .iter()
            .filter(|i| i.kind == "quest_board")
            .map(|i| {
                let label = if i.label.is_empty() {
                    "Quest board".to_string()
                } else {
                    i.label.clone()
                };
                (label, distance(px, py, i.x, i.y))
            })
            .min_by(|a, b| a.1.partial_cmp(&b.1).unwrap_or(std::cmp::Ordering::Equal))
    }

    /// Human-readable template name from synced catalog hints.
    pub fn template_display_name(&self, template_id: &str) -> String {
        self.inventory_hints
            .get(template_id)
            .map(|h| h.display_name.clone())
            .filter(|n| !n.is_empty())
            .unwrap_or_else(|| humanize_template_id(template_id))
    }

    /// Prefer blueprint-view display name, then inventory hints / humanized id.
    pub fn blueprint_item_label(&self, template_id: &str, display_name: &str) -> String {
        if !display_name.is_empty() {
            display_name.to_string()
        } else {
            self.template_display_name(template_id)
        }
    }

    pub fn blueprint_output_label(&self, blueprint: &BlueprintView) -> String {
        self.blueprint_item_label(&blueprint.output, &blueprint.output_display_name)
    }

    pub fn blueprint_ingredient_label(
        &self,
        input: &flatland_protocol::BlueprintIngredientView,
    ) -> String {
        self.blueprint_item_label(&input.template_id, &input.display_name)
    }

    pub fn blueprint_tool_label(&self, tool: &flatland_protocol::ToolRequirementView) -> String {
        self.blueprint_item_label(&tool.item, &tool.display_name)
    }

    /// Harvest picker rows for the worker route editor — distance/sort from rest bed, not player.
    pub fn route_editor_node_candidates(&self) -> Vec<crate::worker_route_editor::NodeCandidate> {
        use crate::worker_route_editor::{
            node_candidates, node_candidates_stable, route_editor_lodging_anchor,
        };
        let lodging = self
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.lodging_container_id.as_deref());
        match route_editor_lodging_anchor(lodging, &self.placed_containers) {
            Some((ax, ay)) => node_candidates(&self.resource_nodes, ax, ay),
            None => node_candidates_stable(&self.resource_nodes),
        }
    }

    pub fn route_editor_harvest_dist_label(&self, dist_m: f32) -> String {
        if dist_m.is_nan() {
            return "—".into();
        }
        let from_bed = self
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.lodging_container_id.as_deref())
            .and_then(|id| {
                self.placed_containers
                    .iter()
                    .find(|c| c.id == id)
                    .map(|c| c.display_name.clone())
            });
        match from_bed {
            Some(bed) => format!("{dist_m:.0}m from {bed}"),
            None => format!("{dist_m:.0}m"),
        }
    }

    /// Chest label for the location panel — generic type unless this player owns it.
    pub fn placed_container_public_label(
        &self,
        c: &flatland_protocol::PlacedContainerView,
    ) -> String {
        let is_owner = match (self.character_id, c.owner_character_id) {
            (Some(me), Some(owner)) => me == owner,
            _ => false,
        };
        if is_owner {
            c.display_name.clone()
        } else {
            self.template_display_name(&c.template_id)
        }
    }

    /// Keys on person and stowed on the keychain for the keychain overlay.
    pub fn keychain_entries(&self) -> Vec<KeychainEntry> {
        let mut out = Vec::new();
        for stack in &self.inventory_stacks {
            if stack.template_id == KEY_TEMPLATE {
                out.push(KeychainEntry {
                    stack: stack.clone(),
                    stowed: false,
                });
            }
        }
        for stack in &self.keychain_stacks {
            if stack.template_id == KEY_TEMPLATE {
                out.push(KeychainEntry {
                    stack: stack.clone(),
                    stowed: true,
                });
            }
        }
        out
    }

    /// Display name of the chest a `container_key` opens, when known on the client.
    pub fn key_pair_chest_label(&self, stack: &flatland_protocol::ItemStack) -> Option<String> {
        if stack.template_id != KEY_TEMPLATE {
            return None;
        }
        if let Some(name) = stack
            .props
            .get(PROP_OPENS_CONTAINER_NAME)
            .filter(|n| !n.is_empty())
        {
            return Some(name.clone());
        }
        let opens = stack.props.get(PROP_OPENS_LOCK_ID)?;
        self.container_name_for_lock_id(opens)
    }

    /// Keys always show the catalog name — never a chest rename or stray `custom_name`.
    pub fn key_inventory_label(&self, stack: &flatland_protocol::ItemStack) -> String {
        if stack.template_id == KEY_TEMPLATE {
            self.template_display_name(KEY_TEMPLATE)
        } else {
            stack
                .display_name
                .clone()
                .unwrap_or_else(|| stack.template_id.clone())
        }
    }

    /// Hint suffix for a key row (`[key for …]` or `[key — unpaired]`).
    pub fn key_inventory_hint(&self, stack: &flatland_protocol::ItemStack) -> String {
        if stack.template_id != KEY_TEMPLATE {
            return String::new();
        }
        match self.key_pair_chest_label(stack) {
            Some(chest) if self.key_drop_blocked(stack) => {
                format!(" [key for {chest} — can't drop while locked]")
            }
            Some(chest) => format!(" [key for {chest}]"),
            None => " [key — unpaired]".into(),
        }
    }

    /// Resolve a lock id to a container label (placed chest or one still on your person).
    pub fn container_name_for_lock_id(&self, lock: &str) -> Option<String> {
        for c in &self.placed_containers {
            if c.lock_id.as_deref() == Some(lock) {
                return Some(c.display_name.clone());
            }
        }
        Self::container_name_in_stacks(&self.inventory_stacks, lock).or_else(|| {
            self.worn
                .values()
                .find_map(|worn| Self::container_name_in_stacks(std::slice::from_ref(worn), lock))
        })
    }

    /// Keys cannot be dropped while their paired chest is locked.
    pub fn key_drop_blocked(&self, stack: &flatland_protocol::ItemStack) -> bool {
        if stack.template_id != KEY_TEMPLATE {
            return false;
        }
        let Some(opens) = stack.props.get(PROP_OPENS_LOCK_ID) else {
            return false;
        };
        for c in &self.placed_containers {
            if c.lock_id.as_deref() == Some(opens.as_str()) && c.locked {
                return true;
            }
        }
        if Self::has_locked_container_with_lock(&self.inventory_stacks, opens) {
            return true;
        }
        self.worn
            .values()
            .any(|worn| Self::has_locked_container_with_lock(std::slice::from_ref(worn), opens))
    }

    /// Property deeds cannot be dropped or destroyed (store or trade only).
    pub fn deed_bound(&self, stack: &flatland_protocol::ItemStack) -> bool {
        stack.template_id == PROPERTY_DEED_TEMPLATE
    }

    pub fn is_property_deed_template(template_id: &str) -> bool {
        template_id == PROPERTY_DEED_TEMPLATE
    }

    pub fn deed_plot_id(stack: &flatland_protocol::ItemStack) -> Option<uuid::Uuid> {
        stack
            .props
            .get("plot_id")
            .and_then(|s| uuid::Uuid::parse_str(s).ok())
    }

    /// World position (cell center) of the plot cell the player is standing on, if tillable.
    pub fn cultivate_target_under_player(&self) -> Option<(f32, f32)> {
        let (px, py) = self.player_position();
        let (cx, cy) = self.farm_plot_cell_under_player()?;
        let tx = cx as f32 + 0.5;
        let ty = cy as f32 + 0.5;
        if distance(px, py, tx, ty) > INTERACTION_RADIUS_M {
            return None;
        }
        let kind = self
            .terrain_at(tx, ty)
            .or_else(|| self.terrain_at(px, py));
        if kind == Some(TerrainKindView::Tilled) {
            return None;
        }
        if matches!(
            kind,
            Some(TerrainKindView::ShallowWater)
                | Some(TerrainKindView::DeepWater)
                | Some(TerrainKindView::Rock)
        ) {
            return None;
        }
        Some((tx, ty))
    }

    fn container_name_in_stacks(
        stacks: &[flatland_protocol::ItemStack],
        lock: &str,
    ) -> Option<String> {
        fn walk(stacks: &[flatland_protocol::ItemStack], lock: &str) -> Option<String> {
            for s in stacks {
                if s.props.get(PROP_LOCK_ID) == Some(&lock.to_string()) {
                    return Some(GameState::stack_container_label(s));
                }
                if let Some(name) = walk(&s.contents, lock) {
                    return Some(name);
                }
            }
            None
        }
        walk(stacks, lock)
    }

    fn stack_container_label(stack: &flatland_protocol::ItemStack) -> String {
        stack
            .props
            .get(PROP_CUSTOM_NAME)
            .cloned()
            .or_else(|| stack.display_name.clone())
            .unwrap_or_else(|| stack.template_id.clone())
    }

    fn has_locked_container_with_lock(stacks: &[flatland_protocol::ItemStack], lock: &str) -> bool {
        fn walk(stacks: &[flatland_protocol::ItemStack], lock: &str) -> bool {
            for s in stacks {
                if s.props.get(PROP_LOCK_ID) == Some(&lock.to_string()) && stack_is_locked(s) {
                    return true;
                }
                if walk(&s.contents, lock) {
                    return true;
                }
            }
            false
        }
        walk(stacks, lock)
    }

    fn stack_for_instance(&self, instance_id: uuid::Uuid) -> Option<flatland_protocol::ItemStack> {
        if let Some(stack) = self.find_stack_by_instance(&self.inventory_stacks, instance_id) {
            return Some(stack.clone());
        }
        for worn in self.worn.values() {
            if worn.item_instance_id == Some(instance_id) {
                return Some(worn.clone());
            }
            if let Some(stack) = self.find_stack_by_instance(&worn.contents, instance_id) {
                return Some(stack.clone());
            }
        }
        None
    }

    /// Highest-`z_order` property zone covering `(x, y)`.
    pub fn property_zone_at(&self, x: f32, y: f32) -> Option<&flatland_protocol::PropertyZoneView> {
        self.property_zones
            .iter()
            .enumerate()
            .filter(|(_, z)| zone_rects_contain(&z.rects, x, y))
            .max_by(|(ia, a), (ib, b)| a.z_order.cmp(&b.z_order).then(ia.cmp(ib)))
            .map(|(_, z)| z)
    }

    /// Highest-`z_order` tax zone covering `(x, y)`.
    pub fn tax_zone_at(&self, x: f32, y: f32) -> Option<&flatland_protocol::TaxZoneView> {
        self.tax_zones
            .iter()
            .enumerate()
            .filter(|(_, z)| zone_rects_contain(&z.rects, x, y))
            .max_by(|(ia, a), (ib, b)| a.z_order.cmp(&b.z_order).then(ia.cmp(ib)))
            .map(|(_, z)| z)
    }

    /// Max tax `rate_bps` across 1 m cell centers of the claim rect (matches server).
    pub fn tax_rate_bps_at_rect(&self, x0: f32, y0: f32, x1: f32, y1: f32) -> u32 {
        let mut max_bps = 0u32;
        let mut y = y0 + 0.5;
        while y < y1 {
            let mut x = x0 + 0.5;
            while x < x1 {
                if let Some(tz) = self.tax_zone_at(x, y) {
                    max_bps = max_bps.max(tz.rate_bps);
                }
                x += 1.0;
            }
            y += 1.0;
        }
        max_bps
    }

    /// Claim footprint as half-open world AABB `(x0, y0, x1, y1)`.
    pub fn claim_footprint_rect(&self) -> Option<(f32, f32, f32, f32)> {
        let mode = self.claim_mode.as_ref()?;
        let w = mode.width_m.max(1) as f32;
        let h = mode.height_m.max(1) as f32;
        Some((mode.anchor_x, mode.anchor_y, mode.anchor_x + w, mode.anchor_y + h))
    }

    /// Relocate ghost as half-open 1×1 world AABB `(x0, y0, x1, y1)`.
    pub fn relocate_footprint_rect(&self) -> Option<(f32, f32, f32, f32)> {
        let mode = self.relocate_mode.as_ref()?;
        let x0 = mode.cursor_x.floor();
        let y0 = mode.cursor_y.floor();
        Some((x0, y0, x0 + 1.0, y0 + 1.0))
    }

    /// Client quote matching server `quote_plot`:
    /// `(purchase, upkeep, area, premium, can_afford, valid, reason)`.
    pub fn claim_quote(
        &self,
    ) -> Option<(u64, u64, f32, f32, bool, bool, String)> {
        let mode = self.claim_mode.as_ref()?;
        let zone = self
            .property_zones
            .iter()
            .find(|z| z.id == mode.zone_id)?;
        let (x0, y0, x1, y1) = self.claim_footprint_rect()?;
        let area = (x1 - x0).max(0.0) * (y1 - y0).max(0.0);
        let zone_area = zone_view_area_m2(zone).max(1.0);
        let area_frac = (area / zone_area).clamp(0.0, 1.0);
        let weight = self
            .property_plot_settings
            .as_ref()
            .map(|s| s.tax_premium_weight)
            .unwrap_or(0.5)
            .max(0.0);
        let rate = self.tax_rate_bps_at_rect(x0, y0, x1, y1);
        let premium = 1.0 + (rate as f32 / 10_000.0) * weight;
        let purchase = ((zone.crown_price_copper as f64)
            * (area_frac as f64)
            * (premium as f64))
            .ceil()
            .max(0.0) as u64;
        let upkeep = if zone.upkeep_copper_per_day == 0 {
            0
        } else {
            ((zone.upkeep_copper_per_day as f64) * (area_frac as f64) * (premium as f64))
                .ceil()
                .max(1.0) as u64
        };
        let copper = crate::currency::copper_from_counts(&self.inventory);
        let can_afford = copper >= purchase;
        let (valid, reason) = self.validate_claim_footprint(zone, x0, y0, x1, y1, area);
        Some((purchase, upkeep, area, premium, can_afford, valid, reason))
    }

    fn validate_claim_footprint(
        &self,
        zone: &flatland_protocol::PropertyZoneView,
        x0: f32,
        y0: f32,
        x1: f32,
        y1: f32,
        area: f32,
    ) -> (bool, String) {
        let min_area = self
            .property_plot_settings
            .as_ref()
            .map(|s| s.min_plot_area_m2)
            .unwrap_or(4.0);
        if area + f32::EPSILON < min_area {
            return (false, "plot too small".into());
        }
        if zone.max_area_m2.is_some_and(|m| area > m) {
            return (false, "plot exceeds max area".into());
        }
        if !claim_rect_fully_inside_zone(zone, x0, y0, x1, y1) {
            return (false, "plot must lie inside the property zone".into());
        }
        if self.property_plots.iter().any(|p| {
            rects_overlap_half_open(x0, y0, x1, y1, p.x0, p.y0, p.x1, p.y1)
        }) {
            return (false, "plot overlaps an existing claim".into());
        }
        (true, String::new())
    }

    /// Standing in a property zone on a free cell (not already claimed).
    pub fn free_property_zone_under_player(
        &self,
    ) -> Option<&flatland_protocol::PropertyZoneView> {
        let (px, py) = self.player_position();
        let zone = self.property_zone_at(px, py)?;
        if self
            .property_plots
            .iter()
            .any(|p| point_in_plot(px, py, p))
        {
            return None;
        }
        Some(zone)
    }

    /// Own plot covering the player (`is_mine`).
    pub fn my_plot_under_player(&self) -> Option<&flatland_protocol::PropertyPlotView> {
        let (px, py) = self.player_position();
        self.property_plots
            .iter()
            .find(|p| p.is_mine && point_in_plot(px, py, p))
    }

    /// Plot under the player that they may farm (deed, grant, or public).
    pub fn farmable_plot_under_player(&self) -> Option<&flatland_protocol::PropertyPlotView> {
        let (px, py) = self.player_position();
        self.property_plots
            .iter()
            .find(|p| (p.is_mine || p.may_farm) && point_in_plot(px, py, p))
    }

    /// Grid cell under the player on a farmable plot (`[cx,cx+1)` × `[cy,cy+1)` contains feet).
    pub fn farm_plot_cell_under_player(&self) -> Option<(i32, i32)> {
        if self.farmable_plot_under_player().is_none() {
            return None;
        }
        let (px, py) = self.player_position();
        Some((px.floor() as i32, py.floor() as i32))
    }

    fn resource_node_occupies_farm_cell(&self, cx: i32, cy: i32) -> bool {
        let (tx, ty) = (cx as f32 + 0.5, cy as f32 + 0.5);
        self.resource_nodes.iter().any(|n| {
            let (ncx, ncy) = (n.x.floor() as i32, n.y.floor() as i32);
            ncx == cx && ncy == cy
                || ((n.x - tx).abs() < 0.51 && (n.y - ty).abs() < 0.51)
        })
    }

    fn free_tilled_plant_slot_at(&self, cx: i32, cy: i32) -> bool {
        let (tx, ty) = (cx as f32 + 0.5, cy as f32 + 0.5);
        let tilled = self.terrain_at(tx, ty) == Some(TerrainKindView::Tilled)
            || self
                .terrain_zone_at(cx as f32 + 0.25, cy as f32 + 0.25)
                .is_some_and(|z| z.kind == TerrainKindView::Tilled);
        if !tilled {
            return false;
        }
        !self.resource_node_occupies_farm_cell(cx, cy)
    }

    /// Empty tilled soil on the cell the player is standing on (no crop node).
    pub fn underfoot_free_tilled_plant_slot(&self) -> bool {
        let Some((cx, cy)) = self.farm_plot_cell_under_player() else {
            return false;
        };
        self.free_tilled_plant_slot_at(cx, cy)
    }

    /// True when a free tilled cell (no resource node) is within interact range.
    pub fn has_nearby_free_tilled_plant_slot(&self) -> bool {
        let (px, py) = self.player_position();
        for dy in -2..=2 {
            for dx in -2..=2 {
                let cx = px.floor() as i32 + dx;
                let cy = py.floor() as i32 + dy;
                let (tx, ty) = (cx as f32 + 0.5, cy as f32 + 0.5);
                if distance(px, py, tx, ty) > INTERACTION_RADIUS_M {
                    continue;
                }
                if self.free_tilled_plant_slot_at(cx, cy) {
                    return true;
                }
            }
        }
        false
    }

    fn stack_is_farm_seed(stack: &flatland_protocol::ItemStack) -> bool {
        stack.quantity > 0
            && (stack.props.contains_key("seed_for")
                || stack.template_id.ends_with("_seed")
                || stack.template_id == "potato_seed"
                || stack.template_id == "carrot_seed")
    }

    /// Farm seed stacks in inventory (template_id, qty, display label), sorted by label.
    pub fn farm_seed_entries(&self) -> Vec<(String, u32, String)> {
        let mut counts: std::collections::HashMap<String, u32> = std::collections::HashMap::new();
        fn walk(
            stacks: &[flatland_protocol::ItemStack],
            counts: &mut std::collections::HashMap<String, u32>,
        ) {
            for s in stacks {
                if GameState::stack_is_farm_seed(s) {
                    *counts.entry(s.template_id.clone()).or_default() += s.quantity;
                }
                walk(&s.contents, counts);
            }
        }
        walk(&self.inventory_stacks, &mut counts);
        for worn in self.worn.values() {
            walk(std::slice::from_ref(worn), &mut counts);
        }
        let mut out: Vec<_> = counts
            .into_iter()
            .map(|(template_id, quantity)| {
                let label = self
                    .inventory_hints
                    .get(&template_id)
                    .map(|h| h.display_name.clone())
                    .filter(|n| !n.trim().is_empty())
                    .unwrap_or_else(|| humanize_template_id(&template_id));
                (template_id, quantity, label)
            })
            .collect();
        out.sort_by(|a, b| a.2.cmp(&b.2).then_with(|| a.0.cmp(&b.0)));
        out
    }

    /// First farm seed template in inventory (root + nested bags).
    pub fn first_farm_seed_template(&self) -> Option<String> {
        self.farm_seed_entries()
            .into_iter()
            .next()
            .map(|(id, _, _)| id)
    }

    pub fn clamp_plant_menu(&mut self) {
        let n = self.farm_seed_entries().len();
        if n == 0 {
            self.plant_menu_index = 0;
            self.plant_quantity = 1;
            return;
        }
        self.plant_menu_index = self.plant_menu_index.min(n - 1);
        let max_qty = self
            .farm_seed_entries()
            .get(self.plant_menu_index)
            .map(|(_, q, _)| *q)
            .unwrap_or(1)
            .max(1);
        self.plant_quantity = self.plant_quantity.clamp(1, max_qty);
    }

    pub fn plant_menu_selection(&self) -> Option<(String, u32, String)> {
        let entries = self.farm_seed_entries();
        let (id, max, label) = entries.get(self.plant_menu_index)?;
        let qty = self.plant_quantity.min(*max).max(1);
        Some((id.clone(), qty, label.clone()))
    }

    /// Terrain, interactables, and map objects near the player for the HUD location panel.
    pub fn location_context_lines(&self) -> Vec<ContextLine> {
        let (px, py) = self.player_position();
        let inside = self.effective_inside_building();
        let mut lines = Vec::new();

        if let Some(kind) = self.terrain_at(px, py) {
            lines.push(ContextLine {
                on_top: true,
                text: format!("Terrain: {}", terrain_kind_label(kind)),
            });
        }

        if let Some(id) = inside.as_ref() {
            if let Some(b) = self.buildings.iter().find(|b| &b.id == id) {
                lines.push(ContextLine {
                    on_top: true,
                    text: format!("Inside: {}", b.label),
                });
            }
        }

        let mut nearby: Vec<(f32, ContextLine)> = Vec::new();

        for node in &self.resource_nodes {
            if node.id.starts_with("preview:") {
                continue;
            }
            let dist = distance(px, py, node.x, node.y);
            if dist > NEARBY_SCAN_M {
                continue;
            }
            let on_top = dist <= ON_TOP_RADIUS_M;
            let prefix = if on_top { "On" } else { "Near" };
            let name = resource_node_near_display_label(&node.label);
            let action = resource_node_near_action_suffix(node);
            nearby.push((
                dist,
                ContextLine {
                    on_top,
                    text: format!("{prefix}: {name} ({dist:.1}m){action}"),
                },
            ));
        }

        for drop in &self.ground_drops {
            let dist = distance(px, py, drop.x, drop.y);
            if dist > INTERACTION_RADIUS_M {
                continue;
            }
            let on_top = dist <= ON_TOP_RADIUS_M;
            let name = self.template_display_name(&drop.template_id);
            let prefix = if on_top { "On" } else { "Near" };
            let qty = if drop.quantity > 1 {
                format!(" ×{}", drop.quantity)
            } else {
                String::new()
            };
            nearby.push((
                dist,
                ContextLine {
                    on_top,
                    text: format!("{prefix}: {name}{qty} ({dist:.1}m) — f pickup"),
                },
            ));
        }

        for c in &self.placed_containers {
            let dist = distance(px, py, c.x, c.y);
            if dist > CONTAINER_RANGE_M {
                continue;
            }
            let on_top = dist <= ON_TOP_RADIUS_M;
            let name = self.placed_container_public_label(c);
            let lock = if c.locked { " [locked]" } else { "" };
            let prefix = if on_top { "On" } else { "Near" };
            nearby.push((
                dist,
                ContextLine {
                    on_top,
                    text: format!("{prefix}: {name}{lock} ({dist:.1}m) — f pickup"),
                },
            ));
        }

        for npc in &self.npcs {
            let dist = distance(px, py, npc.x, npc.y);
            if dist > NEARBY_SCAN_M {
                continue;
            }
            let on_top = dist <= ON_TOP_RADIUS_M;
            let prefix = if on_top { "On" } else { "Near" };
            nearby.push((
                dist,
                ContextLine {
                    on_top,
                    text: format!("{prefix}: {} ({dist:.1}m) — f talk", npc.label),
                },
            ));
        }

        for door in &self.doors {
            let dist = distance(px, py, door.x, door.y);
            if dist > DOOR_INTERACTION_RADIUS_M {
                continue;
            }
            let building = self
                .buildings
                .iter()
                .find(|b| b.id == door.building_id)
                .map(|b| b.label.as_str())
                .unwrap_or(door.building_id.as_str());
            let player_house = self
                .buildings
                .iter()
                .find(|b| b.id == door.building_id)
                .is_some_and(|b| b.tags.iter().any(|t| t == "player_built"));
            let action = if inside.is_some() && door.portal.is_some() {
                if player_house {
                    if door.locked {
                        "locked — l unlock · Enter exit".to_string()
                    } else if door.open {
                        "close · Enter exit · l lock".to_string()
                    } else {
                        "open · Enter exit · l lock".to_string()
                    }
                } else {
                    "exit".to_string()
                }
            } else if player_house {
                if door.locked {
                    "locked — l unlock".to_string()
                } else if door.open {
                    "close · Enter go inside · l lock".to_string()
                } else {
                    "open · l lock".to_string()
                }
            } else {
                "enter".to_string()
            };
            nearby.push((
                dist,
                ContextLine {
                    on_top: dist <= ON_TOP_RADIUS_M,
                    text: format!("{building} door ({dist:.1}m) — f {action}"),
                },
            ));
        }

        if inside.is_none() {
            for inter in &self.interactables {
                if inter.kind != "quest_board" {
                    continue;
                }
                let dist = distance(px, py, inter.x, inter.y);
                if dist > QUEST_BOARD_INTERACTION_RADIUS_M {
                    continue;
                }
                let on_top = dist <= ON_TOP_RADIUS_M;
                let prefix = if on_top { "On" } else { "Near" };
                let label = if inter.label.is_empty() {
                    "Quest board".to_string()
                } else {
                    inter.label.clone()
                };
                nearby.push((
                    dist,
                    ContextLine {
                        on_top,
                        text: format!("{prefix}: {label} ({dist:.1}m) — f view quests"),
                    },
                ));
            }
        }

        if self.in_shallow_water() {
            let already = self
                .terrain_at(px, py)
                .is_some_and(|k| k == flatland_protocol::TerrainKindView::ShallowWater);
            if !already {
                nearby.push((
                    0.0,
                    ContextLine {
                        on_top: true,
                        text: "Shallow water — f fill bottle".into(),
                    },
                ));
            } else if let Some(line) = lines.iter_mut().find(|l| l.text.starts_with("Terrain:")) {
                line.text.push_str(" — f fill bottle");
            }
        }

        if self.claim_mode.is_some() {
            nearby.push((
                0.0,
                ContextLine {
                    on_top: true,
                    text: "Claim mode — WASD move · [ ] size · 2/4/8 · Enter buy · Esc cancel"
                        .into(),
                },
            ));
        } else if let Some(plot) = self.my_plot_under_player() {
            let zone = plot
                .zone_label
                .as_deref()
                .filter(|s| !s.trim().is_empty())
                .or_else(|| {
                    self.property_zones
                        .iter()
                        .find(|z| z.id == plot.property_zone_id)
                        .and_then(|z| z.label.as_deref().filter(|s| !s.trim().is_empty()))
                })
                .unwrap_or(plot.property_zone_id.as_str());
            let prompt = if self.sell_plot_confirm == Some(plot.plot_id) {
                format!("Your plot ({zone}) — f again to sell to crown")
            } else {
                format!(
                    "Your plot ({zone}) — c till · p plant · f harvest · B build · l door lock · o farm access"
                )
            };
            nearby.push((
                0.0,
                ContextLine {
                    on_top: true,
                    text: prompt,
                },
            ));
        } else if let Some(plot) = self.farmable_plot_under_player() {
            let owner = plot
                .owner_label
                .as_deref()
                .filter(|s| !s.trim().is_empty())
                .unwrap_or("owner");
            let disc = if plot.farm_public {
                plot.public_tax_discount_bps / 100
            } else {
                plot.farm_allow
                    .iter()
                    .find(|g| Some(g.character_id) == self.character_id)
                    .map(|g| g.tax_discount_bps / 100)
                    .unwrap_or(0)
            };
            nearby.push((
                0.0,
                ContextLine {
                    on_top: true,
                    text: format!(
                        "Farming permitted — {owner} (tax −{disc}%) — c till · p plant · f harvest"
                    ),
                },
            ));
        } else if let Some(zone) = self.free_property_zone_under_player() {
            let label = zone
                .label
                .as_deref()
                .filter(|s| !s.trim().is_empty())
                .unwrap_or(zone.id.as_str());
            nearby.push((
                0.0,
                ContextLine {
                    on_top: true,
                    text: format!("Claimable land: {label} — k buy plot"),
                },
            ));
        }

        for entity in &self.entities {
            if entity.id == self.entity_id {
                continue;
            }
            let dist = distance(
                px,
                py,
                entity.transform.position.x,
                entity.transform.position.y,
            );
            if dist > NEARBY_SCAN_M {
                continue;
            }
            let label = if entity.label.is_empty() {
                format!("entity {}", entity.id)
            } else {
                entity.label.clone()
            };
            nearby.push((
                dist,
                ContextLine {
                    on_top: dist <= ON_TOP_RADIUS_M,
                    text: format!("Near: {label} ({dist:.1}m)"),
                },
            ));
        }

        nearby.sort_by(|a, b| {
            a.0.partial_cmp(&b.0)
                .unwrap_or(std::cmp::Ordering::Equal)
                .then_with(|| a.1.on_top.cmp(&b.1.on_top).reverse())
        });
        lines.extend(nearby.into_iter().map(|(_, l)| l));

        if lines.is_empty() {
            lines.push(ContextLine {
                on_top: false,
                text: "(nothing notable nearby)".into(),
            });
        }

        lines
    }
}

/// HUD line for the location / nearby panel.
#[derive(Debug, Clone)]
pub struct ContextLine {
    pub on_top: bool,
    pub text: String,
}

const ON_TOP_RADIUS_M: f32 = 0.65;
const NEARBY_SCAN_M: f32 = 5.0;

/// Display name for a resource node in location/nearby HUD (strips redundant growing tag).
pub fn resource_node_near_display_label(label: &str) -> String {
    label
        .strip_suffix(" (growing)")
        .unwrap_or(label)
        .to_string()
}

/// Action / state suffix for a resource node line (`growth_progress` wins for farm crops).
pub fn resource_node_near_action_suffix(node: &flatland_protocol::ResourceNodeView) -> String {
    use flatland_protocol::ResourceNodeState;
    if node.harvest_off {
        return " (decorative)".to_string();
    }
    if let Some(p) = node.growth_progress {
        if p < 1.0 - f32::EPSILON {
            let pct = (p.clamp(0.0, 1.0) * 100.0).round() as u32;
            return format!(" (growing, {pct}%)");
        }
        return " — f harvest".to_string();
    }
    match node.state {
        ResourceNodeState::Available => " — f harvest".to_string(),
        ResourceNodeState::Harvesting => " (being harvested)".to_string(),
        ResourceNodeState::Cooldown => " (depleted)".to_string(),
    }
}

fn terrain_kind_label(kind: flatland_protocol::TerrainKindView) -> &'static str {
    use flatland_protocol::TerrainKindView;
    match kind {
        TerrainKindView::Grass => "Grass",
        TerrainKindView::Dirt => "Dirt",
        TerrainKindView::Tilled => "Tilled",
        TerrainKindView::Desert => "Desert",
        TerrainKindView::Hill => "Hills",
        TerrainKindView::Bog => "Bog",
        TerrainKindView::Beach => "Beach",
        TerrainKindView::ShallowWater => "Shallow water",
        TerrainKindView::DeepWater => "Deep water",
        TerrainKindView::Trail => "Trail",
        TerrainKindView::Road => "Road",
        TerrainKindView::Rock => "Rock",
    }
}

fn zone_rects_contain(rects: &[flatland_protocol::ZoneRectView], x: f32, y: f32) -> bool {
    crate::world_zones::zone_rects_contain(rects, x, y)
}

fn zone_view_area_m2(zone: &flatland_protocol::PropertyZoneView) -> f32 {
    zone.rects
        .iter()
        .map(|r| (r.x1 - r.x0).max(0.0) * (r.y1 - r.y0).max(0.0))
        .sum()
}

fn claim_rect_fully_inside_zone(
    zone: &flatland_protocol::PropertyZoneView,
    x0: f32,
    y0: f32,
    x1: f32,
    y1: f32,
) -> bool {
    let mut y = y0 + 0.5;
    while y < y1 {
        let mut x = x0 + 0.5;
        while x < x1 {
            if !zone_rects_contain(&zone.rects, x, y) {
                return false;
            }
            x += 1.0;
        }
        y += 1.0;
    }
    true
}

fn rects_overlap_half_open(
    ax0: f32,
    ay0: f32,
    ax1: f32,
    ay1: f32,
    bx0: f32,
    by0: f32,
    bx1: f32,
    by1: f32,
) -> bool {
    ax0 < bx1 && ax1 > bx0 && ay0 < by1 && ay1 > by0
}

fn point_in_plot(x: f32, y: f32, p: &flatland_protocol::PropertyPlotView) -> bool {
    x >= p.x0 && x < p.x1 && y >= p.y0 && y < p.y1
}

fn plot_route_label(p: &flatland_protocol::PropertyPlotView) -> String {
    p.zone_label
        .as_deref()
        .filter(|s| !s.trim().is_empty())
        .map(|s| s.to_string())
        .unwrap_or_else(|| format!("plot {}", &p.plot_id.to_string()[..8]))
}

/// Match `flatland_sim::economy_zones::snap_claim_rect`.
fn snap_claim_rect_client(x0: f32, y0: f32, x1: f32, y1: f32) -> (f32, f32, f32, f32) {
    let a = x0.min(x1).floor();
    let b = y0.min(y1).floor();
    let mut c = x0.max(x1).ceil();
    let mut d = y0.max(y1).ceil();
    if (c - a) < 1.0 {
        c = a + 1.0;
    }
    if (d - b) < 1.0 {
        d = b + 1.0;
    }
    (a, b, c, d)
}

fn humanize_template_id(template_id: &str) -> String {
    // UUID-style ids have no friendly words to title-case; avoid dumping them in UI.
    if looks_like_template_uuid(template_id) {
        return "Unknown item".into();
    }
    template_id
        .split('_')
        .map(|word| {
            let mut chars = word.chars();
            match chars.next() {
                None => String::new(),
                Some(first) => first.to_uppercase().collect::<String>() + chars.as_str(),
            }
        })
        .collect::<Vec<_>>()
        .join(" ")
}

fn looks_like_template_uuid(template_id: &str) -> bool {
    let bytes = template_id.as_bytes();
    if bytes.len() != 36 {
        return false;
    }
    let is_hex = |b: u8| b.is_ascii_hexdigit();
    let groups = [8usize, 4, 4, 4, 12];
    let mut i = 0;
    for (gi, &len) in groups.iter().enumerate() {
        if gi > 0 {
            if bytes.get(i) != Some(&b'-') {
                return false;
            }
            i += 1;
        }
        for _ in 0..len {
            if !bytes.get(i).copied().is_some_and(is_hex) {
                return false;
            }
            i += 1;
        }
    }
    true
}

/// Keep in sync with `flatland_sim::INTERACTION_RADIUS_M`.
const HARVEST_RANGE_M: f32 = 1.5;

pub struct GameClient<S: PlayConnection> {
    session: S,
    seq: Seq,
    pub state: GameState,
    last_move_forward: f32,
    last_move_strafe: f32,
}

impl<S: PlayConnection> GameClient<S> {
    pub fn new(session: S) -> Self {
        let session_id = session.session_id();
        let entity_id = session.entity_id();
        let mut client = Self {
            session,
            seq: 0,
            last_move_forward: 0.0,
            last_move_strafe: 0.0,
            state: GameState {
                session_id,
                entity_id,
                character_id: None,
                tick: 0,
                chunk_rev: 0,
                content_rev: 0,
                publish_rev: 0,
                entities: Vec::new(),
                player: None,
                resource_nodes: Vec::new(),
                ground_drops: Vec::new(),
                placed_containers: Vec::new(),
                buildings: Vec::new(),
                doors: Vec::new(),
                interior_map: None,
                npcs: Vec::new(),
                blueprints: Vec::new(),
                building_materials: Vec::new(),
                world_x0: 0.0,
                world_y0: 0.0,
                world_width_m: 0.0,
                world_height_m: 0.0,
                terrain_zones: Vec::new(),
                z_platforms: Vec::new(),
                z_transitions: Vec::new(),
                z_bands_outdoor_backup: None,
                world_clock: flatland_protocol::WorldClock::default(),
                inventory: std::collections::HashMap::new(),
                inventory_hints: std::collections::HashMap::new(),
                logs: VecDeque::new(),
                intents_sent: 0,
                ticks_received: 0,
                connected: false,
                disconnect_reason: None,
                show_stats: false,
            hud_log_hidden: false,
                show_equip_menu: false,
                equip_menu_index: 0,
                show_craft_menu: false,
                show_plot_build_menu: false,
                plot_build_focus_wall: true,
                plot_build_wall_index: 0,
                plot_build_roof_index: 0,
                craft_menu_index: 0,
                craft_batch_quantity: 1,
                show_shop_menu: false,
                shop_catalog: None,
                bank_panel: None,
                bank_menu_index: 0,
                bank_ui_mode: BankUiMode::Menu,
                storage_panel: None,
                market_panel: None,
                market_menu_index: 0,
                market_filter: String::new(),
                market_filter_focused: false,
                market_category_filter: None,
                market_buy_confirm: None,
                market_ui_mode: MarketUiMode::Browse,
                storage_menu_index: 0,
                storage_ui_mode: StorageUiMode::Menu,
                shop_tab: ShopTab::default(),
                shop_menu_index: 0,
                shop_quantity: 1,
                shop_trade_log: VecDeque::new(),
                show_npc_verb_menu: false,
                npc_verb_target: None,
                npc_verb_index: 0,
                player_verbs: crate::social::PlayerVerbState::default(),
                social_chat: crate::social::SocialChatState::default(),
                trade_ui: crate::social::TradeUiState::default(),
                whisper_pouch_ui: crate::social::WhisperPouchUi::default(),
                show_npc_chat: false,
                npc_chat: None,
                show_inventory_menu: false,
                inventory_menu_index: 0,
                inventory_tab: InventoryTab::OnPerson,
                inventory_filter: String::new(),
                inventory_filter_focused: false,
                show_move_picker: false,
                show_rename_prompt: false,
                show_worker_rename: false,
                rename_buffer: String::new(),
                move_picker_index: 0,
                move_picker: None,
                show_grant_picker: false,
                grant_picker_index: 0,
                grant_picker: None,
                show_destroy_picker: false,
                destroy_confirm_pending: false,
                destroy_picker: None,
                combat_target: None,
                combat_target_label: None,
                ground_target: None,
                combat_fx: Vec::new(),
                property_zones: Vec::new(),
                tax_zones: Vec::new(),
                growth_zones: Vec::new(),
                biome_zones: Vec::new(),
                terrain_kind_nav: Vec::new(),
                property_plots: Vec::new(),
                property_plot_settings: None,
                claim_mode: None,
                relocate_mode: None,
                sell_plot_confirm: None,
                sell_plot_armed_at: None,
                show_plant_menu: false,
                plant_menu_index: 0,
                show_farm_access: false,
                farm_access_name_draft: String::new(),
                farm_access_discount_bps: 0,
                farm_access_index: 0,
                plant_quantity: 1,
                in_combat: false,
                auto_attack: true,
                combat_has_los: false,
                attack_cd_ticks: 0,
                gcd_ticks: 0,
                weapon_ability_id: "unarmed".into(),
                mainhand_template_id: None,
                mainhand_label: None,
                mainhand_instance_id: None,
                offhand_template_id: None,
                offhand_label: None,
                offhand_instance_id: None,
                mainhand_hand_slots: 1,
                defense: None,
                worn: BTreeMap::new(),
                carry_mass: 0.0,
                carry_mass_max: 0.0,
                encumbrance: flatland_protocol::EncumbranceState::Light,
                inventory_stacks: Vec::new(),
                keychain_stacks: Vec::new(),
            whisper_pouch_stacks: Vec::new(),
                combat_target_detail: None,
                statuses: Vec::new(),
                cast_progress: None,
                timed_channel: None,
                plot_build_offer: None,
                ability_cooldowns: Vec::new(),
                blocking_active: false,
                max_target_slots: 1,
                combat_slots: Vec::new(),
                rotation_presets: Vec::new(),
                known_abilities: Vec::new(),
                ability_meta: std::collections::HashMap::new(),
                ability_mastery: std::collections::HashMap::new(),
                hotbar: vec![None; 9],
                max_abilities_per_rotation: 0,
                show_loadout_menu: false,
                show_keychain_menu: false,
                keychain_menu_index: 0,
                show_rotation_editor: false,
                loadout_menu_index: 0,
                loadout_hotbar_slot: 1,
                loadout_ability_index: 0,
                loadout_focus_presets: false,
                rotation_editor: RotationEditorState::default(),
                harvest_in_progress: false,
                harvest_started_at: None,
                pending_craft_ack: None,
                pending_worker_job_ack: None,
                attending_worker_instance_id: None,
                quest_log: Vec::new(),
                interactables: Vec::new(),
                ledger: None,
                career: None,
                character_sheet_tab: CharacterSheetTab::Character,
                ledger_period: LedgerPeriod::Day,
                show_quest_offer: false,
                pending_quest_offer: None,
                show_quest_menu: false,
                quest_menu_index: 0,
                quest_withdraw_confirm: false,
                hired_workers: Vec::new(),
                show_workers_menu: false,
                workers_menu_index: 0,
                workers_menu_compact: false,
                worker_step_display: BTreeMap::new(),
                worker_error_display: BTreeMap::new(),
                show_worker_give_picker: false,
                worker_give_picker_index: 0,
                worker_give_picker: None,
                show_worker_give_target_picker: false,
                worker_give_target_picker_index: 0,
                worker_give_target_picker: None,
                show_worker_take_picker: false,
                worker_take_picker_index: 0,
                worker_take_picker: None,
                show_worker_teach_picker: false,
                worker_teach_picker_index: 0,
                worker_teach_picker: None,
                worker_route_editor: None,
                progression_curve: None,
            },
        };
        client.state.apply_client_ui_prefs();
        client
    }

    pub fn entity_id(&self) -> EntityId {
        self.state.entity_id
    }

    pub async fn wait_until_ready(&mut self) -> anyhow::Result<()> {
        if self.state.connected {
            return Ok(());
        }

        loop {
            match self.session.next_event().await {
                Some(SessionEvent::Welcome {
                    session_id,
                    entity_id,
                    snapshot,
                }) => {
                    self.state
                        .restore_from_welcome(session_id, entity_id, &snapshot);
                    self.state.apply_client_ui_prefs();
                    self.state.push_log(format!(
                        "Connected — session {session_id}, entity {entity_id}"
                    ));
                    return Ok(());
                }
                Some(SessionEvent::Disconnected { .. }) => {
                    anyhow::bail!("disconnected before welcome");
                }
                Some(_) => continue,
                None => anyhow::bail!("session closed before welcome"),
            }
        }
    }

    /// Drain all pending server events (non-blocking).
    pub fn drain_events(&mut self) {
        while let Some(event) = self.session.try_next_event() {
            if self.handle_event_sync(event).is_err() {
                break;
            }
        }
    }

    /// Wait for the next server event.
    pub async fn next_event(&mut self) -> Option<SessionEvent> {
        self.session.next_event().await
    }

    pub async fn handle_event(&mut self, event: SessionEvent) -> anyhow::Result<()> {
        self.handle_event_sync(event)
    }

    fn handle_event_sync(&mut self, event: SessionEvent) -> anyhow::Result<()> {
        match event {
            SessionEvent::Welcome {
                session_id,
                entity_id,
                snapshot,
            } => {
                let resumed = self.state.connected;
                self.state
                    .restore_from_welcome(session_id, entity_id, &snapshot);
                if resumed {
                    self.state.push_log(format!(
                        "Session restored — session {session_id}, entity {entity_id}"
                    ));
                }
            }
            SessionEvent::ContentUpdated { snapshot } => {
                self.state
                    .apply_snapshot_fields(&snapshot, self.state.entity_id);
                self.state.push_log(format!(
                    "World updated (content rev {})",
                    snapshot.content_rev
                ));
            }
            SessionEvent::Tick(delta) => {
                self.state.apply_tick_fields(&delta, self.state.entity_id);
                self.state.ticks_received += 1;
            }
            SessionEvent::IntentAck {
                entity_id,
                seq,
                tick,
            } => {
                crate::harvest_trace!(entity_id, seq, tick, "client received intent ack");
                if let Some((craft_seq, _, _)) = &self.state.pending_craft_ack {
                    if *craft_seq == seq {
                        let (_, label, batches) = self.state.pending_craft_ack.take().unwrap();
                        if batches > 1 {
                            self.state.push_log(format!("Crafting {label} ×{batches}…"));
                        } else {
                            self.state.push_log(format!("Crafting {label}…"));
                        }
                    }
                }
                if self
                    .state
                    .pending_worker_job_ack
                    .as_ref()
                    .is_some_and(|p| p.seq == seq)
                {
                    let pending = self.state.pending_worker_job_ack.take().unwrap();
                    if pending.idle {
                        self.state.push_log(format!(
                            "Route cleared for {} — worker idle",
                            pending.worker_label
                        ));
                    } else {
                        self.state.push_log(format!(
                            "Route saved for {} — {} stop(s), job loop active",
                            pending.worker_label, pending.stop_count
                        ));
                    }
                    if self
                        .state
                        .worker_route_editor
                        .as_ref()
                        .is_some_and(|ed| ed.worker_instance_id == pending.worker_instance_id)
                    {
                        self.close_worker_route_editor();
                    }
                }
            }
            SessionEvent::Chat(msg) => {
                let label = match msg.channel {
                    flatland_protocol::ChatChannel::Nearby => "nearby",
                    flatland_protocol::ChatChannel::Direct => "speak",
                    flatland_protocol::ChatChannel::Whisper => "whisper",
                    flatland_protocol::ChatChannel::WhisperStone => "stone",
                };
                let clarity = match msg.clarity {
                    flatland_protocol::ChatClarity::Clear => "",
                    flatland_protocol::ChatClarity::Partial => "~",
                    flatland_protocol::ChatClarity::Heavy => "…",
                };
                self.state.push_log(format!(
                    "[{label}{clarity}] {}: {}",
                    msg.from_name, msg.text
                ));
                let now_ms = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .map(|d| d.as_millis() as u64)
                    .unwrap_or(0);
                self.state
                    .social_chat
                    .note_speech(&msg, self.state.entity_id, now_ms);
                self.state
                    .social_chat
                    .push(crate::social::ChatLogEntry::from_message(
                        msg,
                        self.state.entity_id,
                    ));
            }
            SessionEvent::TradeOpened(panel) => {
                self.state.social_chat.pending_trade = None;
                let peer = panel.peer_name.clone();
                self.state.trade_ui.open(panel);
                self.state
                    .social_chat
                    .push_system(format!("Trade open with {peer} — p present · r ready · Esc cancel"));
                self.state
                    .social_chat
                    .push_cue(crate::social::AudioCue::TradeOpened);
            }
            SessionEvent::TradeClosed { reason } => {
                self.state.push_log(reason.clone());
                self.state.social_chat.push_system(reason);
                self.state.trade_ui.close();
            }
            SessionEvent::HarvestResult(result) => {
                self.state.clear_harvest_state();
                crate::harvest_trace!(
                    entity_id = self.state.entity_id,
                    node_id = %result.node_id,
                    template = %result.item_template,
                    quantity = result.quantity,
                    client_tick = self.state.tick,
                    "client applied harvest result"
                );
                let msg = if result.quantity == 0 {
                    format!(
                        "Harvested {} x0 — nothing dropped (loot table rolled empty)",
                        result.item_template
                    )
                } else {
                    format!(
                        "Harvested {} x{} (on the ground — press P to pick up)",
                        result.item_template, result.quantity
                    )
                };
                self.state.push_log(msg);
            }
            SessionEvent::CraftResult(result) => {
                for stack in &result.consumed {
                    if let Some(qty) = self.state.inventory.get_mut(&stack.template_id) {
                        *qty = qty.saturating_sub(stack.quantity);
                        if *qty == 0 {
                            self.state.inventory.remove(&stack.template_id);
                        }
                    }
                }
                for stack in &result.outputs {
                    *self
                        .state
                        .inventory
                        .entry(stack.template_id.clone())
                        .or_insert(0) += stack.quantity;
                }
                if let Some(output) = result.outputs.first() {
                    if result.batch_total > 1 {
                        self.state.push_log(format!(
                            "Crafted {} x{} ({}/{})",
                            output.template_id,
                            output.quantity,
                            result.batch_index,
                            result.batch_total
                        ));
                    } else {
                        self.state.push_log(format!(
                            "Crafted {} x{}",
                            output.template_id, output.quantity
                        ));
                    }
                } else {
                    self.state
                        .push_log(format!("Craft finished: {}", result.blueprint_id));
                }
            }
            SessionEvent::Death(notice) => {
                self.state.clear_harvest_state();
                self.state.push_log(notice.message.clone());
                self.state.push_log(format!(
                    "Respawned at ({:.1}, {:.1})",
                    notice.respawn_x, notice.respawn_y
                ));
            }
            SessionEvent::Interaction(notice) => {
                if notice.message.starts_with("Harvest failed:") {
                    self.state.clear_harvest_state();
                }
                if notice.message.starts_with("Can't do that:") {
                    self.state.pending_craft_ack = None;
                    if let Some(pending) = self.state.pending_worker_job_ack.take() {
                        if let Some(w) = self
                            .state
                            .hired_workers
                            .iter_mut()
                            .find(|w| w.instance_id == pending.worker_instance_id)
                        {
                            w.route = pending.prev_route;
                            w.mode = pending.prev_mode;
                            w.step_label = pending.prev_step_label;
                            w.last_error = pending.prev_last_error;
                        }
                        let reason = notice
                            .message
                            .strip_prefix("Can't do that:")
                            .unwrap_or(&notice.message)
                            .trim();
                        self.state.push_log(format!(
                            "Route save failed for {}: {reason}",
                            pending.worker_label
                        ));
                    }
                    let reason = notice
                        .message
                        .strip_prefix("Can't do that:")
                        .unwrap_or(&notice.message)
                        .trim();
                    if reason.contains("already tilled") {
                        if let Some(plot) = self.state.my_plot_under_player() {
                            self.state.sell_plot_confirm = Some(plot.plot_id);
                            self.state.sell_plot_armed_at = Some(Instant::now());
                        }
                    }
                }
                if notice.message.starts_with("Cast failed:") {
                    self.state.cast_progress = None;
                }
                if notice.message.contains("slain the") {
                    self.state.combat_target = None;
                    self.state.combat_target_label = None;
                }
                // Inbound trade request → inline Y/N in the CHAT column (no popup).
                if notice.message.contains("wants to trade") {
                    if let Ok(from_entity) = notice.target_id.parse::<EntityId>() {
                        let from_name = notice
                            .message
                            .split(" wants to trade")
                            .next()
                            .unwrap_or("Player")
                            .to_string();
                        self.state.social_chat.pending_trade =
                            Some(crate::social::PendingTradeRequest {
                                from_entity,
                                from_name: from_name.clone(),
                            });
                        self.state.social_chat.push_system(format!(
                            "{from_name} wants to trade — [Y] accept · [N] decline"
                        ));
                        self.state
                            .social_chat
                            .push_cue(crate::social::AudioCue::TradeOffer);
                    }
                }
                if notice.message.starts_with("trade request declined") {
                    self.state
                        .social_chat
                        .push_system(notice.message.clone());
                    self.state
                        .social_chat
                        .push_cue(crate::social::AudioCue::TradeDeclined);
                }
                self.state.apply_interaction_notice(&notice);
                self.state.push_log(notice.message.clone());
            }
            SessionEvent::ShopOpened(catalog) => {
                self.state.apply_shop_catalog(catalog);
            }
            SessionEvent::BankOpened(panel) => {
                self.state.apply_bank_panel(panel);
            }
            SessionEvent::StorageOpened(panel) => {
                self.state.apply_storage_panel(panel);
            }
            SessionEvent::MarketOpened(panel) => {
                self.state.apply_market_panel(panel);
            }
            SessionEvent::NpcTalkOpened(opened) => {
                self.state.show_npc_verb_menu = false;
                if self.state.npc_verb_target.is_none() {
                    self.state.npc_verb_target = Some(opened.npc_id.clone());
                }
                let label = opened.npc_label.clone();
                let banner = if !opened.trade_allowed {
                    Some("Trade is unavailable right now.".to_string())
                } else {
                    None
                };
                self.state.show_npc_chat = true;
                self.state.npc_chat = Some(NpcChatState {
                    npc_id: opened.npc_id,
                    npc_label: opened.npc_label,
                    lines: if opened.greeting.is_empty() {
                        vec![]
                    } else {
                        vec![format!("{label}: {}", opened.greeting)]
                    },
                    input: String::new(),
                    pending: opened.greeting.is_empty(),
                    talk_depth: opened.talk_depth,
                    trade_allowed: opened.trade_allowed,
                    banner,
                });
            }
            SessionEvent::NpcTalkPending(_) => {
                if let Some(chat) = self.state.npc_chat.as_mut() {
                    chat.pending = true;
                }
            }
            SessionEvent::NpcTalkReply(reply) => {
                if let Some(chat) = self.state.npc_chat.as_mut() {
                    if chat.npc_id == reply.npc_id {
                        chat.pending = false;
                        if reply.trade_disabled {
                            chat.trade_allowed = false;
                            chat.banner = Some("Trade is unavailable right now.".to_string());
                        }
                        if reply.wind_down {
                            chat.talk_depth = flatland_protocol::NpcTalkDepth::Brief;
                            if chat.banner.is_none() {
                                chat.banner =
                                    Some("They're wrapping up — keep it brief.".to_string());
                            }
                        }
                        chat.lines
                            .push(format!("{}: {}", chat.npc_label, reply.line));
                    }
                }
            }
            SessionEvent::NpcTalkClosed(closed) => {
                if self
                    .state
                    .npc_chat
                    .as_ref()
                    .is_some_and(|c| c.npc_id == closed.npc_id)
                {
                    self.state.show_npc_chat = false;
                    self.state.npc_chat = None;
                }
            }
            SessionEvent::NpcTalkError(err) => {
                self.state.push_log(format!("Talk failed: {}", err.reason));
                if let Some(chat) = self.state.npc_chat.as_mut() {
                    chat.pending = false;
                }
            }
            SessionEvent::UseResult(result) => {
                // Inventory count hint only — the Interaction notice already logs
                // "Consumed …" (and drives the gfx toast). Logging again here doubled toasts.
                if let Some(qty) = self.state.inventory.get_mut(&result.template_id) {
                    *qty = qty.saturating_sub(1);
                    if *qty == 0 {
                        self.state.inventory.remove(&result.template_id);
                    }
                }
            }
            SessionEvent::QuestOffer(offer) => {
                self.state.pending_quest_offer = Some(offer.clone());
                self.state.show_quest_offer = true;
                self.state
                    .push_log(format!("Quest offered: {}", offer.title));
            }
            SessionEvent::QuestAccepted(notice) => {
                self.state.show_quest_offer = false;
                self.state.pending_quest_offer = None;
                self.state.push_log(notice.message);
            }
            SessionEvent::QuestWithdrawn(notice) => {
                self.state.show_quest_menu = false;
                self.state.quest_withdraw_confirm = false;
                self.state.push_log(notice.message);
            }
            SessionEvent::QuestStepCompleted(notice) => {
                self.state.push_log(notice.message);
            }
            SessionEvent::QuestCompleted(notice) => {
                self.state.push_log(notice.message);
            }
            SessionEvent::Disconnected { reason } => {
                self.state.clear_harvest_state();
                self.state.connected = false;
                self.state.disconnect_reason = reason.clone().filter(|s| !s.is_empty());
                if let Some(r) = &self.state.disconnect_reason {
                    self.state.push_log(format!("Disconnected: {r}"));
                } else {
                    self.state.push_log("Disconnected from server");
                }
            }
        }
        Ok(())
    }

    pub fn is_connected(&self) -> bool {
        self.state.connected
    }

    pub fn close_overlays(&mut self) {
        self.state.show_stats = false;
        self.state.show_craft_menu = false;
        self.state.show_plot_build_menu = false;
        self.state.show_shop_menu = false;
        self.state.shop_catalog = None;
        self.state.show_npc_verb_menu = false;
        self.state.npc_verb_target = None;
        self.state.show_npc_chat = false;
        self.state.npc_chat = None;
        self.state.show_inventory_menu = false;
        self.state.show_loadout_menu = false;
        self.state.show_rotation_editor = false;
        self.state.rotation_editor.reset();
        self.state.show_rename_prompt = false;
        self.state.show_worker_rename = false;
        self.state.rename_buffer.clear();
        self.state.show_move_picker = false;
        self.state.move_picker = None;
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
        self.state.show_quest_offer = false;
        self.state.pending_quest_offer = None;
        self.state.show_quest_menu = false;
        self.state.quest_withdraw_confirm = false;
        self.state.show_workers_menu = false;
        self.close_worker_give_picker();
        self.close_worker_give_target_picker();
        self.close_worker_take_picker();
        self.close_worker_teach_picker();
        self.state.worker_route_editor = None;
        self.state.claim_mode = None;
        self.state.relocate_mode = None;
        self.state.sell_plot_confirm = None;
        self.state.sell_plot_armed_at = None;
        self.close_farm_access_panel();
        if self.state.show_plant_menu {
            self.close_plant_menu();
        }
    }

    /// Esc / back — pop one UI layer instead of closing every overlay at once.
    pub fn back_on_esc(&mut self) -> bool {
        if self.state.social_chat.composer_open() {
            self.state.social_chat.close_composer();
            return true;
        }
        if self.state.player_verbs.open {
            self.state.player_verbs.close();
            return true;
        }
        if self.state.whisper_pouch_ui.open {
            self.state.whisper_pouch_ui.open = false;
            return true;
        }
        if self.state.trade_ui.panel.is_some() {
            // async cancel — caller should prefer trade_cancel; close UI optimistically
            self.state.trade_ui.close();
            return true;
        }
        if self.state.show_rename_prompt {
            self.cancel_rename_prompt();
            return true;
        }
        if self.state.show_worker_rename {
            self.cancel_worker_rename();
            return true;
        }
        if self.state.show_destroy_picker {
            if self.state.destroy_confirm_pending {
                self.cancel_destroy_confirm();
            } else {
                self.close_destroy_picker();
            }
            return true;
        }
        if self.state.claim_mode.is_some() {
            self.cancel_claim_mode();
            return true;
        }
        if self.state.relocate_mode.is_some() {
            self.cancel_relocate_mode();
            return true;
        }
        if self.state.show_plant_menu {
            self.close_plant_menu();
            return true;
        }
        if self.state.show_farm_access {
            self.close_farm_access_panel();
            return true;
        }
        if self.state.sell_plot_confirm.is_some() {
            self.state.sell_plot_confirm = None;
            self.state.sell_plot_armed_at = None;
            self.state.push_log("Sell cancelled");
            return true;
        }
        if self.state.show_move_picker {
            self.close_move_picker();
            return true;
        }
        if self.state.show_rotation_editor {
            match self.state.rotation_editor.mode {
                RotationEditorMode::List => {
                    self.state.show_rotation_editor = false;
                    self.state.rotation_editor.reset();
                }
                RotationEditorMode::EditLabel => {
                    self.state.rotation_editor.label_buffer.clear();
                    self.state.rotation_editor.mode = RotationEditorMode::EditSequence;
                }
                RotationEditorMode::PickAbility => {
                    self.state.rotation_editor.mode = RotationEditorMode::EditSequence;
                }
                RotationEditorMode::EditSequence => {
                    self.state.rotation_editor.draft = None;
                    self.state.rotation_editor.mode = RotationEditorMode::List;
                }
            }
            return true;
        }
        if self.state.show_inventory_menu {
            self.close_inventory_menu();
            return true;
        }
        if self.state.show_craft_menu {
            self.close_craft_menu();
            return true;
        }
        if self.state.show_plot_build_menu {
            self.close_plot_build_menu();
            return true;
        }
        if self.state.show_keychain_menu {
            self.close_keychain_menu();
            return true;
        }
        if self.state.show_quest_offer {
            self.quest_offer_decline();
            return true;
        }
        if self.state.show_shop_menu {
            // Caller must await shop close (npc_interaction_back / play-loop).
            return false;
        }
        if self.state.bank_panel.is_some() {
            return false;
        }
        if self.state.storage_panel.is_some() {
            return false;
        }
        if self.state.market_panel.is_some() {
            return false;
        }
        if self.state.show_npc_chat {
            // play.rs calls npc_interaction_back().await on Esc
            return false;
        }
        if self.state.show_npc_verb_menu {
            self.state.show_npc_verb_menu = false;
            self.state.npc_verb_target = None;
            return true;
        }
        if self.state.show_quest_menu {
            if self.state.quest_withdraw_confirm {
                self.state.quest_withdraw_confirm = false;
            } else {
                self.state.show_quest_menu = false;
            }
            return true;
        }
        if self.state.worker_route_editor.is_some() {
            // Pop one sheet level; only close the editor at the root stop list.
            if self.re_at_root_sheet() {
                let reopen = self.state.attending_worker_instance_id.clone();
                self.close_worker_route_editor();
                if let Some(id) = reopen {
                    if let Some(idx) = self
                        .state
                        .hired_workers
                        .iter()
                        .position(|w| w.instance_id == id)
                    {
                        self.state.workers_menu_index = idx;
                        self.state.show_workers_menu = true;
                    }
                }
            } else {
                self.re_sheet_back();
            }
            return true;
        }
        if self.state.show_worker_give_picker {
            self.close_worker_give_picker();
            return true;
        }
        if self.state.show_worker_give_target_picker {
            self.close_worker_give_target_picker();
            return true;
        }
        if self.state.show_worker_take_picker {
            self.close_worker_take_picker();
            return true;
        }
        if self.state.show_worker_teach_picker {
            self.close_worker_teach_picker();
            return true;
        }
        if self.state.show_workers_menu {
            self.close_workers_menu_ui();
            return true;
        }
        if self.state.show_loadout_menu {
            self.state.show_loadout_menu = false;
            return true;
        }
        if self.state.show_stats {
            self.state.show_stats = false;
            return true;
        }
        if self.state.show_equip_menu {
            self.state.show_equip_menu = false;
            return true;
        }
        false
    }

    pub fn toggle_stats(&mut self) {
        self.state.show_stats = !self.state.show_stats;
        if self.state.show_stats {
            self.state.character_sheet_tab = CharacterSheetTab::Character;
            self.state.show_craft_menu = false;
            self.state.show_shop_menu = false;
            self.state.shop_catalog = None;
            self.state.show_inventory_menu = false;
            self.state.show_equip_menu = false;
        }
    }

    pub fn toggle_equip_menu(&mut self) {
        self.state.show_equip_menu = !self.state.show_equip_menu;
        if self.state.show_equip_menu {
            self.state.show_stats = false;
            self.state.show_craft_menu = false;
            self.state.show_shop_menu = false;
            self.state.shop_catalog = None;
            self.state.show_inventory_menu = false;
            self.state.show_loadout_menu = false;
        }
    }

    pub fn cycle_character_sheet_tab(&mut self) {
        if self.state.show_stats {
            self.state.character_sheet_tab = self.state.character_sheet_tab.cycle();
        }
    }

    pub fn set_ledger_period_digit(&mut self, c: char) {
        if self.state.show_stats {
            if let Some(p) = LedgerPeriod::from_digit(c) {
                self.state.ledger_period = p;
                self.state.character_sheet_tab = CharacterSheetTab::Ledger;
            }
        }
    }

    pub fn cycle_ledger_period(&mut self) {
        if self.state.show_stats
            && self.state.character_sheet_tab == CharacterSheetTab::Ledger
        {
            self.state.ledger_period = self.state.ledger_period.cycle();
        }
    }

    pub fn open_inventory_menu(&mut self) {
        self.state.show_inventory_menu = true;
        self.state.show_craft_menu = false;
        self.state.show_shop_menu = false;
        self.state.shop_catalog = None;
        self.state.show_stats = false;
        self.state.show_move_picker = false;
        self.state.move_picker = None;
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
        self.state.show_rename_prompt = false;
        self.state.rename_buffer.clear();
        self.state.inventory_filter_focused = false;
        self.state.clamp_inventory_indices();
    }

    pub fn close_inventory_menu(&mut self) {
        self.state.show_inventory_menu = false;
        self.state.show_move_picker = false;
        self.state.move_picker = None;
        self.close_grant_picker();
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
        self.state.show_rename_prompt = false;
        self.state.rename_buffer.clear();
        self.state.inventory_filter_focused = false;
    }

    pub fn open_rename_prompt(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if !self.state.row_is_renameable_container(&row) {
            anyhow::bail!("only storage containers can be renamed");
        }
        let current = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        self.state.rename_buffer = current;
        self.state.show_rename_prompt = true;
        self.state.show_worker_rename = false;
        self.state.show_move_picker = false;
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        Ok(())
    }

    pub fn cancel_rename_prompt(&mut self) {
        self.state.show_rename_prompt = false;
        self.state.rename_buffer.clear();
    }

    pub async fn confirm_rename_prompt(&mut self) -> anyhow::Result<()> {
        let name = self.state.rename_buffer.trim().to_string();
        if name.is_empty() {
            anyhow::bail!("name cannot be empty");
        }
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        let Some(instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("item has no instance id");
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::RenameContainer {
                entity_id: self.state.entity_id,
                item_instance_id: instance_id,
                location: row.from.clone(),
                name,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.show_rename_prompt = false;
        self.state.rename_buffer.clear();
        Ok(())
    }

    pub fn open_worker_rename(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self.state.hired_workers.get(self.state.workers_menu_index) else {
            anyhow::bail!("no worker selected");
        };
        self.state.rename_buffer = worker.label.clone();
        self.state.show_worker_rename = true;
        self.state.show_rename_prompt = false;
        Ok(())
    }

    pub fn cancel_worker_rename(&mut self) {
        self.state.show_worker_rename = false;
        self.state.rename_buffer.clear();
    }

    pub async fn confirm_worker_rename(&mut self) -> anyhow::Result<()> {
        let name = self.state.rename_buffer.trim().to_string();
        if name.is_empty() {
            anyhow::bail!("name cannot be empty");
        }
        if name.chars().count() > 32 {
            anyhow::bail!("name must be 1–32 characters");
        }
        let Some(worker) = self.state.hired_workers.get(self.state.workers_menu_index) else {
            anyhow::bail!("no worker selected");
        };
        let worker_instance_id = worker.instance_id.clone();
        self.seq += 1;
        self.session
            .submit_intent(Intent::RenameHiredWorker {
                entity_id: self.state.entity_id,
                worker_instance_id: worker_instance_id.clone(),
                name: name.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if let Some(w) = self
            .state
            .hired_workers
            .iter_mut()
            .find(|w| w.instance_id == worker_instance_id)
        {
            w.label = name.clone();
        }
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            if ed.worker_instance_id == worker_instance_id {
                ed.worker_label = name.clone();
            }
        }
        self.state.show_worker_rename = false;
        self.state.rename_buffer.clear();
        self.state.push_log(format!("Renamed worker to \"{name}\""));
        Ok(())
    }

    pub fn toggle_inventory_menu(&mut self) {
        if self.state.show_inventory_menu {
            self.close_inventory_menu();
        } else {
            self.open_inventory_menu();
        }
    }

    /// ↑/↓ in the inventory browser, or within the "move to…" / grant picker when open.
    pub fn inventory_menu_move(&mut self, delta: i32) {
        if self.state.show_grant_picker {
            let Some(picker) = self.state.grant_picker.as_ref() else {
                return;
            };
            let labels: Vec<String> = picker.options.iter().map(|o| o.label.clone()).collect();
            let filter = picker.filter.clone();
            let n = labels.len();
            if n == 0 {
                return;
            }
            self.state.grant_picker_index = step_filtered_index(
                self.state.grant_picker_index,
                delta,
                n,
                |i| list_label_matches(&labels[i], &filter),
            );
            return;
        }
        if self.state.show_move_picker {
            let Some(picker) = self.state.move_picker.as_ref() else {
                return;
            };
            let labels: Vec<String> = picker.options.iter().map(|o| o.label.clone()).collect();
            let filter = picker.filter.clone();
            let n = labels.len();
            if n == 0 {
                return;
            }
            self.state.move_picker_index = step_filtered_index(
                self.state.move_picker_index,
                delta,
                n,
                |i| list_label_matches(&labels[i], &filter),
            );
            self.state.clamp_move_picker_quantity();
            return;
        }
        let n = self.state.inventory_selectable_rows().len();
        if n == 0 {
            return;
        }
        let idx = self.state.inventory_menu_index as i32;
        self.state.inventory_menu_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    /// PageUp / PageDown (±1 page) for inventory / move / grant lists.
    pub fn inventory_menu_page(&mut self, pages: i32) {
        if self.state.show_grant_picker {
            let Some(picker) = self.state.grant_picker.as_ref() else {
                return;
            };
            let labels: Vec<String> = picker.options.iter().map(|o| o.label.clone()).collect();
            let filter = picker.filter.clone();
            let n = labels.len();
            self.state.grant_picker_index = page_filtered_index(
                self.state.grant_picker_index,
                pages,
                n,
                |i| list_label_matches(&labels[i], &filter),
            );
            return;
        }
        if self.state.show_move_picker {
            let Some(picker) = self.state.move_picker.as_ref() else {
                return;
            };
            let labels: Vec<String> = picker.options.iter().map(|o| o.label.clone()).collect();
            let filter = picker.filter.clone();
            let n = labels.len();
            self.state.move_picker_index = page_filtered_index(
                self.state.move_picker_index,
                pages,
                n,
                |i| list_label_matches(&labels[i], &filter),
            );
            self.state.clamp_move_picker_quantity();
            return;
        }
        let n = self.state.inventory_selectable_rows().len();
        self.state.inventory_menu_index =
            page_list_index(self.state.inventory_menu_index, pages, n);
    }

    pub fn cycle_inventory_tab(&mut self, forward: bool) {
        if self.state.show_move_picker
            || self.state.show_grant_picker
            || self.state.show_destroy_picker
            || self.state.show_rename_prompt
            || self.state.inventory_filter_focused
        {
            return;
        }
        self.state.inventory_tab = self.state.inventory_tab.cycle(forward);
        self.state.inventory_menu_index = 0;
        self.state.clamp_inventory_indices();
    }

    pub fn focus_inventory_filter(&mut self) {
        if self.state.show_grant_picker {
            if let Some(p) = self.state.grant_picker.as_mut() {
                p.filter_focused = true;
            }
            return;
        }
        if self.state.show_move_picker {
            if let Some(p) = self.state.move_picker.as_mut() {
                p.filter_focused = true;
            }
            return;
        }
        self.state.inventory_filter_focused = true;
    }

    pub fn set_inventory_filter(&mut self, filter: String) {
        self.state.inventory_filter = filter;
        self.state.inventory_menu_index = 0;
        self.state.clamp_inventory_indices();
    }

    pub fn append_inventory_filter_char(&mut self, ch: char) {
        if ch.is_control() {
            return;
        }
        if self.state.show_grant_picker {
            if let Some(p) = self.state.grant_picker.as_mut() {
                if p.filter_focused {
                    p.filter.push(ch);
                    self.state.grant_picker_index = 0;
                }
            }
            return;
        }
        if self.state.show_move_picker {
            if let Some(p) = self.state.move_picker.as_mut() {
                if p.filter_focused {
                    p.filter.push(ch);
                    self.state.move_picker_index = 0;
                    self.state.clamp_move_picker_quantity();
                }
            }
            return;
        }
        if !self.state.inventory_filter_focused {
            return;
        }
        self.state.inventory_filter.push(ch);
        self.state.inventory_menu_index = 0;
        self.state.clamp_inventory_indices();
    }

    pub fn inventory_filter_backspace(&mut self) {
        if self.state.show_grant_picker {
            if let Some(p) = self.state.grant_picker.as_mut() {
                if p.filter_focused {
                    p.filter.pop();
                    self.state.grant_picker_index = 0;
                }
            }
            return;
        }
        if self.state.show_move_picker {
            if let Some(p) = self.state.move_picker.as_mut() {
                if p.filter_focused {
                    p.filter.pop();
                    self.state.move_picker_index = 0;
                    self.state.clamp_move_picker_quantity();
                }
            }
            return;
        }
        if !self.state.inventory_filter_focused {
            return;
        }
        self.state.inventory_filter.pop();
        self.state.inventory_menu_index = 0;
        self.state.clamp_inventory_indices();
    }

    /// Esc while filter focused: clear filter then blur. Returns true if handled.
    pub fn clear_or_blur_inventory_filter(&mut self) -> bool {
        if self.state.show_grant_picker {
            if let Some(p) = self.state.grant_picker.as_mut() {
                if p.filter_focused {
                    if !p.filter.is_empty() {
                        p.filter.clear();
                        self.state.grant_picker_index = 0;
                    } else {
                        p.filter_focused = false;
                    }
                    return true;
                }
                if !p.filter.is_empty() {
                    p.filter.clear();
                    self.state.grant_picker_index = 0;
                    return true;
                }
            }
            return false;
        }
        if self.state.show_move_picker {
            if let Some(p) = self.state.move_picker.as_mut() {
                if p.filter_focused {
                    if !p.filter.is_empty() {
                        p.filter.clear();
                        self.state.move_picker_index = 0;
                        self.state.clamp_move_picker_quantity();
                    } else {
                        p.filter_focused = false;
                    }
                    return true;
                }
                if !p.filter.is_empty() {
                    p.filter.clear();
                    self.state.move_picker_index = 0;
                    self.state.clamp_move_picker_quantity();
                    return true;
                }
            }
            return false;
        }
        if self.state.inventory_filter_focused {
            if !self.state.inventory_filter.is_empty() {
                self.state.inventory_filter.clear();
                self.state.inventory_menu_index = 0;
                self.state.clamp_inventory_indices();
            } else {
                self.state.inventory_filter_focused = false;
            }
            return true;
        }
        if !self.state.inventory_filter.is_empty() {
            self.state.inventory_filter.clear();
            self.state.inventory_menu_index = 0;
            self.state.clamp_inventory_indices();
            return true;
        }
        false
    }

    pub fn craft_menu_page(&mut self, pages: i32) {
        let n = self.state.blueprints.len();
        self.state.craft_menu_index = page_list_index(self.state.craft_menu_index, pages, n);
        self.state.clamp_craft_batch_quantity();
    }

    pub fn shop_menu_page(&mut self, pages: i32) {
        let n = self.state.shop_list_len();
        self.state.shop_menu_index = page_list_index(self.state.shop_menu_index, pages, n);
        self.state.clamp_shop_quantity();
    }

    pub fn workers_menu_page(&mut self, pages: i32) {
        let n = self.state.hired_workers.len();
        self.state.workers_menu_index =
            page_list_index(self.state.workers_menu_index, pages, n);
    }

    /// Enter: unequip a worn bag, equip a weapon, wear/place a loose bag or
    /// chest — or fall back to the "move to…" destination picker (including
    /// loose consumables; pick "Use" in that list or press `e` to eat/drink).
    /// Placed chest shells open a pick-up destination picker (`l` still locks).
    pub async fn activate_inventory_selection(&mut self) -> anyhow::Result<()> {
        if self.state.show_destroy_picker {
            if self.state.destroy_confirm_pending {
                return self.confirm_destroy_item().await;
            }
            return self.request_destroy_confirm();
        }
        if self.state.show_grant_picker {
            return self.confirm_grant_picker().await;
        }
        if self.state.show_move_picker {
            return self.confirm_move_picker().await;
        }
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.is_equip_shell {
            let flatland_protocol::InventoryLocation::Worn { slot } = row.from else {
                anyhow::bail!("not a worn item");
            };
            return self.equip_worn(slot, None).await;
        }
        if row.is_chest_shell {
            return self.open_chest_pickup_picker();
        }
        let template_id = row.stack.template_id.clone();
        let instance_id = row.stack.item_instance_id;
        let category = self.state.inventory_item_category(&template_id);
        let on_person = row.from == flatland_protocol::InventoryLocation::Root;

        if category == Some("weapon") {
            return self.equip_mainhand(Some(template_id)).await;
        }
        if category == Some("lodging") && on_person {
            if let Some(inst) = instance_id {
                return self.place_container(inst).await;
            }
        }
        if (category == Some("container") || category == Some("armor")) && on_person {
            if let Some(inst) = instance_id {
                let world_placeable = row.stack.world_placeable == Some(true)
                    || template_id.contains("chest");
                if world_placeable {
                    return self.place_container(inst).await;
                }
                // Pouches no longer equip directly — they clip onto a worn belt's loops
                // instead, so fall through to the move picker (offers "belt loop" when a
                // belt is worn). Backpacks/belts/armor equip straight to their body slot.
                if let Some(slot) = guess_body_slot(&template_id) {
                    return self.equip_worn(slot, Some(inst)).await;
                }
            }
        }
        // Anything else (materials, consumables, pouches, items nested in a bag/chest,
        // weapons you'd rather stash than wield, ...) — offer explicit places to move it
        // instead of guessing.
        self.open_move_picker()
    }

    /// `e`: eat/drink a consumable, or open grant-target picker for grant oils/scrolls.
    pub async fn use_selected_consumable(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.from != flatland_protocol::InventoryLocation::Root {
            anyhow::bail!("select a consumable on your person");
        }
        if GameState::stack_is_item_grant(&row.stack) {
            return self.open_grant_target_picker();
        }
        if GameState::is_property_deed_template(&row.stack.template_id) {
            return self.open_move_picker();
        }
        let category = self
            .state
            .inventory_item_category(&row.stack.template_id);
        if category != Some("consumable") {
            anyhow::bail!("selected item is not consumable");
        }
        self.use_item(&row.stack.template_id).await
    }

    /// Open picker: apply selected grant item onto inventory / worn gear.
    pub fn open_grant_target_picker(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.from != flatland_protocol::InventoryLocation::Root {
            anyhow::bail!("select a grant item on your person");
        }
        if !GameState::stack_is_item_grant(&row.stack) {
            anyhow::bail!("selected item does not grant onto gear");
        }
        let Some(grant_instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("grant has no instance id");
        };
        let effect_id = GameState::grant_effect_id(&row.stack)
            .unwrap_or("?")
            .to_string();
        let mode = GameState::grant_mode(&row.stack).to_string();
        let options = self.state.grant_target_options(&row.stack);
        if options.is_empty() {
            anyhow::bail!("no valid gear to apply {effect_id} to");
        }
        let grant_label = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        self.state.show_grant_picker = true;
        self.state.grant_picker_index = 0;
        self.state.grant_picker = Some(GrantTargetPicker {
            grant_instance_id,
            grant_label,
            effect_id,
            mode,
            options,
            filter: String::new(),
            filter_focused: false,
        });
        Ok(())
    }

    pub fn close_grant_picker(&mut self) {
        self.state.show_grant_picker = false;
        self.state.grant_picker = None;
        self.state.grant_picker_index = 0;
    }

    pub async fn confirm_grant_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.grant_picker.clone() else {
            self.close_grant_picker();
            return Ok(());
        };
        let Some(opt) = picker.options.get(self.state.grant_picker_index).cloned() else {
            self.close_grant_picker();
            return Ok(());
        };
        self.close_grant_picker();
        self.use_grant(picker.grant_instance_id, opt.target_instance_id)
            .await?;
        self.state.push_log(format!(
            "Applying {} onto {}…",
            picker.effect_id, opt.label
        ));
        Ok(())
    }

    /// `m`: always open the "move to…" picker for the selected item, even for
    /// weapons/wearables that Enter would otherwise equip/wear directly.
    /// Placed chests open the pick-up destination picker instead.
    pub fn open_move_picker(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.is_equip_shell {
            anyhow::bail!("this is a worn bag — press Enter to unequip it");
        }
        if row.is_chest_shell {
            return self.open_chest_pickup_picker();
        }
        let Some(instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("item has no instance id");
        };
        let mut options = self.state.move_destinations_for(
            &row.from,
            row.from_parent_instance_id,
            row.stack.item_instance_id,
            &row.stack.template_id,
        );
        let on_person = row.from == flatland_protocol::InventoryLocation::Root;
        let category = self.state.inventory_item_category(&row.stack.template_id);
        if on_person && GameState::is_property_deed_template(&row.stack.template_id) {
            if let Some(plot_id) = GameState::deed_plot_id(&row.stack) {
                options.insert(
                    0,
                    MoveOption {
                        label: "Sell plot to crown…".into(),
                        kind: MoveOptionKind::SellPlotToCrown { plot_id },
                    },
                );
            }
        }
        if on_person && category == Some("consumable") {
            if GameState::stack_is_item_grant(&row.stack) {
                options.insert(
                    0,
                    MoveOption {
                        label: "Apply onto gear…".into(),
                        kind: MoveOptionKind::GrantApply,
                    },
                );
            } else {
                options.insert(
                    0,
                    MoveOption {
                        label: "Use (eat / drink)".into(),
                        kind: MoveOptionKind::Use,
                    },
                );
            }
        }
        let item_label = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        // Default to 1 so withdrawing from storage is partial unless the player
        // presses `a` for max fit (full stack when the destination allows it).
        let initial_qty = if row.stack.quantity > 1 { 1 } else { row.stack.quantity };
        self.state.move_picker = Some(MovePicker {
            item_instance_id: instance_id,
            from: row.from,
            item_label,
            template_id: row.stack.template_id.clone(),
            stack_quantity: row.stack.quantity,
            quantity: initial_qty.max(1),
            options,
            filter: String::new(),
            filter_focused: false,
        });
        self.state.move_picker_index = 0;
        self.state.show_move_picker = true;
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
        self.state.clamp_move_picker_quantity();
        Ok(())
    }

    /// Enter/`m` on a placed chest shell: pick destinations to take it into inventory.
    pub fn open_chest_pickup_picker(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if !row.is_chest_shell {
            anyhow::bail!("not a placed chest");
        }
        let flatland_protocol::InventoryLocation::Placed { container_id } = &row.from else {
            anyhow::bail!("not a placed chest");
        };
        let Some(instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("chest has no instance id");
        };
        let chest = self
            .state
            .placed_containers
            .iter()
            .find(|c| c.id == *container_id)
            .cloned()
            .ok_or_else(|| anyhow::anyhow!("chest not found"))?;
        let (px, py) = self.state.player_position();
        if (chest.x - px).hypot(chest.y - py) > CONTAINER_RANGE_M {
            anyhow::bail!("too far from {}", chest.display_name);
        }
        if chest.locked && !chest.accessible {
            anyhow::bail!(
                "need the matching key for {} before picking it up",
                chest.display_name
            );
        }
        let options = self.state.chest_pickup_destinations(container_id);
        let item_label = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        self.state.move_picker = Some(MovePicker {
            item_instance_id: instance_id,
            from: row.from.clone(),
            item_label,
            template_id: row.stack.template_id.clone(),
            stack_quantity: 1,
            quantity: 1,
            options,
            filter: String::new(),
            filter_focused: false,
        });
        self.state.move_picker_index = 0;
        self.state.show_move_picker = true;
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
        Ok(())
    }

    pub fn close_move_picker(&mut self) {
        self.state.show_move_picker = false;
        self.state.move_picker = None;
    }

    pub fn move_picker_adjust_quantity(&mut self, delta: i32) {
        self.state.move_picker_adjust_quantity(delta);
    }

    pub fn move_picker_set_quantity_max(&mut self) {
        self.state.move_picker_set_quantity_max();
    }

    pub fn move_picker_set_quantity_min(&mut self) {
        self.state.move_picker_set_quantity_min();
    }

    pub fn destroy_picker_adjust_quantity(&mut self, delta: i32) {
        self.state.destroy_picker_adjust_quantity(delta);
    }

    pub fn destroy_picker_set_quantity_max(&mut self) {
        self.state.destroy_picker_set_quantity_max();
    }

    pub fn destroy_picker_set_quantity_min(&mut self) {
        self.state.destroy_picker_set_quantity_min();
    }

    async fn confirm_move_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.move_picker.clone() else {
            self.close_move_picker();
            return Ok(());
        };
        let Some(option) = picker.options.get(self.state.move_picker_index).cloned() else {
            self.close_move_picker();
            return Ok(());
        };
        match option.kind {
            MoveOptionKind::Cancel => {
                self.close_move_picker();
            }
            MoveOptionKind::Use => {
                self.close_move_picker();
                self.use_item(&picker.template_id).await?;
            }
            MoveOptionKind::GrantApply => {
                self.close_move_picker();
                self.open_grant_target_picker()?;
            }
            MoveOptionKind::SellPlotToCrown { plot_id } => {
                self.close_move_picker();
                self.confirm_sell_plot_to_crown(plot_id).await?;
            }
            MoveOptionKind::RelocatePlaced { container_id } => {
                self.close_move_picker();
                self.state.show_inventory_menu = false;
                self.begin_relocate_container(&container_id)?;
            }
            MoveOptionKind::Drop => {
                self.close_move_picker();
                if self
                    .state
                    .hand_equipped_instance_ids()
                    .contains(&picker.item_instance_id)
                {
                    anyhow::bail!("unequip that item first");
                }
                if let Some(stack) = self.state.stack_for_instance(picker.item_instance_id) {
                    if self.state.deed_bound(&stack) {
                        anyhow::bail!(
                            "cannot drop a property deed — store it or trade it to another player"
                        );
                    }
                    if self.state.key_drop_blocked(&stack) {
                        anyhow::bail!("cannot drop the key while its chest is locked");
                    }
                }
                self.drop_item(picker.item_instance_id, picker.from).await?;
                self.state
                    .push_log(format!("Dropped {}", picker.item_label));
            }
            MoveOptionKind::PickupPlaced {
                container_id,
                nest_location,
                nest_parent_instance_id,
            } => {
                self.close_move_picker();
                self.pickup_container(container_id.clone()).await?;
                let nest_into_bag = nest_parent_instance_id.is_some()
                    || !matches!(
                        nest_location,
                        flatland_protocol::InventoryLocation::Root
                    );
                if nest_into_bag {
                    self.move_item(
                        picker.item_instance_id,
                        flatland_protocol::InventoryLocation::Root,
                        nest_location,
                        nest_parent_instance_id,
                        None,
                    )
                    .await?;
                    self.state
                        .push_log(format!("Picked up {} into bag", picker.item_label));
                } else {
                    self.state
                        .push_log(format!("Picked up {}", picker.item_label));
                }
            }
            MoveOptionKind::Move {
                location,
                parent_instance_id,
            } => {
                self.close_move_picker();
                let qty = if picker.quantity >= picker.stack_quantity {
                    None
                } else {
                    Some(picker.quantity)
                };
                self.move_item(
                    picker.item_instance_id,
                    picker.from,
                    location,
                    parent_instance_id,
                    qty,
                )
                .await?;
                let moved = qty.unwrap_or(picker.stack_quantity);
                if moved >= picker.stack_quantity {
                    self.state.push_log(format!("Moved {}", picker.item_label));
                } else {
                    self.state.push_log(format!(
                        "Moved {} ×{} of {}",
                        picker.item_label, moved, picker.stack_quantity
                    ));
                }
            }
        }
        Ok(())
    }

    /// `d`: drop the selected item on the ground immediately (no picker).
    pub async fn drop_selected(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.is_equip_shell {
            anyhow::bail!("unequip the bag first (Enter), then drop from your person");
        }
        if row.is_chest_shell {
            anyhow::bail!("can't drop a placed chest from the inventory list — pick it up first");
        }
        let Some(inst) = row.stack.item_instance_id else {
            anyhow::bail!("item has no instance id");
        };
        if self.state.hand_equipped_instance_ids().contains(&inst) {
            anyhow::bail!("unequip that item first");
        }
        if self.state.deed_bound(&row.stack) {
            anyhow::bail!("cannot drop a property deed — store it or trade it to another player");
        }
        if self.state.key_drop_blocked(&row.stack) {
            anyhow::bail!("cannot drop the key while its chest is locked");
        }
        let label = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        self.drop_item(inst, row.from).await?;
        self.state.push_log(format!("Dropped {label}"));
        Ok(())
    }

    pub async fn drop_item(
        &mut self,
        item_instance_id: uuid::Uuid,
        from: flatland_protocol::InventoryLocation,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::DropItem {
                entity_id: self.state.entity_id,
                item_instance_id,
                from,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// `x`: open permanent-delete picker for the selected item (quantity + confirm).
    pub fn open_destroy_picker(&mut self) -> anyhow::Result<()> {
        let Some(row) = self.state.inventory_selected_row() else {
            anyhow::bail!("inventory empty");
        };
        if row.is_equip_shell {
            anyhow::bail!("unequip the bag first (Enter), then destroy from your person");
        }
        if row.is_chest_shell {
            anyhow::bail!("can't destroy a placed chest from the inventory list");
        }
        let Some(instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("item has no instance id");
        };
        if self.state.hand_equipped_instance_ids().contains(&instance_id) {
            anyhow::bail!("unequip that item first");
        }
        if self.state.deed_bound(&row.stack) {
            anyhow::bail!(
                "cannot destroy a property deed — store it or trade it to another player"
            );
        }
        if self.state.key_drop_blocked(&row.stack) {
            anyhow::bail!("cannot destroy the key while its chest is locked");
        }
        let item_label = row
            .stack
            .display_name
            .clone()
            .unwrap_or_else(|| row.stack.template_id.clone());
        self.state.destroy_picker = Some(DestroyPicker {
            item_instance_id: instance_id,
            from: row.from,
            item_label,
            stack_quantity: row.stack.quantity,
            quantity: row.stack.quantity,
        });
        self.state.destroy_confirm_pending = false;
        self.state.show_destroy_picker = true;
        self.state.show_move_picker = false;
        self.state.move_picker = None;
        Ok(())
    }

    pub fn close_destroy_picker(&mut self) {
        self.state.show_destroy_picker = false;
        self.state.destroy_confirm_pending = false;
        self.state.destroy_picker = None;
    }

    pub fn cancel_destroy_confirm(&mut self) {
        self.state.destroy_confirm_pending = false;
    }

    pub fn request_destroy_confirm(&mut self) -> anyhow::Result<()> {
        if self.state.destroy_picker.is_none() {
            self.close_destroy_picker();
            return Ok(());
        }
        self.state.destroy_confirm_pending = true;
        Ok(())
    }

    pub async fn confirm_destroy_item(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.destroy_picker.clone() else {
            self.close_destroy_picker();
            return Ok(());
        };
        let qty = if picker.quantity >= picker.stack_quantity {
            None
        } else {
            Some(picker.quantity)
        };
        self.destroy_item(picker.item_instance_id, picker.from, qty)
            .await?;
        let destroyed = qty.unwrap_or(picker.stack_quantity);
        if destroyed >= picker.stack_quantity {
            self.state
                .push_log(format!("Destroyed {}", picker.item_label));
        } else {
            self.state.push_log(format!(
                "Destroyed {} ×{} of {}",
                picker.item_label, destroyed, picker.stack_quantity
            ));
        }
        self.close_destroy_picker();
        Ok(())
    }

    pub async fn destroy_item(
        &mut self,
        item_instance_id: uuid::Uuid,
        from: flatland_protocol::InventoryLocation,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::DestroyItem {
                entity_id: self.state.entity_id,
                item_instance_id,
                from,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// `l`: lock/unlock a placed chest — selected chest in inventory UI, else nearest.
    pub async fn toggle_chest_lock_for_selection(&mut self) -> anyhow::Result<()> {
        if let Some(row) = self.state.inventory_selected_row() {
            if let flatland_protocol::InventoryLocation::Placed { container_id } = &row.from {
                return self.toggle_placed_chest_lock(container_id).await;
            }
        }
        self.toggle_nearby_chest_lock().await
    }

    pub async fn toggle_placed_chest_lock(&mut self, container_id: &str) -> anyhow::Result<()> {
        let chest = self
            .state
            .placed_containers
            .iter()
            .find(|c| c.id == container_id)
            .cloned()
            .ok_or_else(|| anyhow::anyhow!("chest not found"))?;
        let (px, py) = self.state.player_position();
        if (chest.x - px).hypot(chest.y - py) > CONTAINER_RANGE_M {
            anyhow::bail!("too far from {}", chest.display_name);
        }
        if !chest.accessible && chest.locked {
            anyhow::bail!(
                "need the matching key for {} (each crafted chest has its own key)",
                chest.display_name
            );
        }
        let lock = !chest.locked;
        self.set_container_locked(
            flatland_protocol::InventoryLocation::Placed {
                container_id: chest.id.clone(),
            },
            lock,
        )
        .await?;
        self.state.push_log(if lock {
            format!("Locked {}", chest.display_name)
        } else {
            format!("Unlocked {}", chest.display_name)
        });
        Ok(())
    }

    /// `l` outside inventory: lock/unlock the nearest placed chest (within `CONTAINER_RANGE_M`).
    pub async fn toggle_nearby_chest_lock(&mut self) -> anyhow::Result<()> {
        let chest = self
            .state
            .nearest_placed_container(CONTAINER_RANGE_M)
            .ok_or_else(|| anyhow::anyhow!("no chest nearby"))?;
        self.toggle_placed_chest_lock(&chest.id).await
    }

    pub async fn unequip_mainhand(&mut self) -> anyhow::Result<()> {
        self.equip_mainhand(None).await
    }

    pub async fn equip_offhand(&mut self, template_id: Option<String>) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::EquipOffhand {
                entity_id: self.state.entity_id,
                template_id,
                instance_id: None,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn unequip_offhand(&mut self) -> anyhow::Result<()> {
        self.equip_offhand(None).await
    }

    pub async fn unequip_all_worn(&mut self) -> anyhow::Result<()> {
        let slots: Vec<BodySlot> = self.state.worn.keys().copied().collect();
        for slot in slots {
            self.equip_worn(slot, None).await?;
        }
        Ok(())
    }

    pub async fn pickup_nearest_container(&mut self) -> anyhow::Result<()> {
        let (px, py) = self.state.player_position();
        let nearest = self
            .state
            .placed_containers
            .iter()
            .min_by(|a, b| {
                let da = (a.x - px).hypot(a.y - py);
                let db = (b.x - px).hypot(b.y - py);
                da.partial_cmp(&db).unwrap_or(std::cmp::Ordering::Equal)
            })
            .cloned();
        let Some(chest) = nearest else {
            anyhow::bail!("no chest nearby");
        };
        if (chest.x - px).hypot(chest.y - py) > 2.0 {
            anyhow::bail!("too far from chest");
        }
        self.pickup_container(chest.id).await
    }

    pub async fn equip_worn(
        &mut self,
        slot: BodySlot,
        instance_id: Option<uuid::Uuid>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::EquipWorn {
                entity_id: self.state.entity_id,
                slot,
                instance_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn place_container(&mut self, item_instance_id: uuid::Uuid) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::PlaceContainer {
                entity_id: self.state.entity_id,
                item_instance_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn pickup_container(&mut self, container_id: String) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::PickupContainer {
                entity_id: self.state.entity_id,
                container_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn move_item(
        &mut self,
        item_instance_id: uuid::Uuid,
        from: flatland_protocol::InventoryLocation,
        to: flatland_protocol::InventoryLocation,
        to_parent_instance_id: Option<uuid::Uuid>,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::MoveItem {
                entity_id: self.state.entity_id,
                item_instance_id,
                from,
                to,
                to_parent_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn set_container_locked(
        &mut self,
        location: flatland_protocol::InventoryLocation,
        locked: bool,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetContainerLocked {
                entity_id: self.state.entity_id,
                location,
                locked,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn use_item(&mut self, template_id: &str) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Use {
                entity_id: self.state.entity_id,
                template_id: template_id.to_string(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Bind a grant consumable onto a specific item instance (unique gear status).
    pub async fn use_grant(
        &mut self,
        grant_instance_id: uuid::Uuid,
        target_instance_id: uuid::Uuid,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::UseGrant {
                entity_id: self.state.entity_id,
                grant_instance_id,
                target_instance_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn open_craft_menu(&mut self) {
        self.state.show_craft_menu = true;
        self.state.show_shop_menu = false;
        self.state.shop_catalog = None;
        self.state.show_stats = false;
        self.state.show_inventory_menu = false;
        if self.state.blueprints.is_empty() {
            self.state.craft_menu_index = 0;
            self.state.craft_batch_quantity = 1;
            return;
        }
        self.state.craft_menu_index = self
            .state
            .craft_menu_index
            .min(self.state.blueprints.len() - 1);
        if let Some(idx) = self
            .state
            .blueprints
            .iter()
            .position(|bp| self.state.can_craft_blueprint(bp))
        {
            self.state.craft_menu_index = idx;
        }
        self.state.clamp_craft_batch_quantity();
    }

    pub fn close_craft_menu(&mut self) {
        self.state.show_craft_menu = false;
    }

    pub fn toggle_keychain_menu(&mut self) {
        if self.state.show_keychain_menu {
            self.close_keychain_menu();
        } else {
            self.state.show_keychain_menu = true;
            self.state.show_craft_menu = false;
            self.state.show_shop_menu = false;
            self.state.show_inventory_menu = false;
            let n = self.state.keychain_entries().len();
            if n == 0 {
                self.state.keychain_menu_index = 0;
            } else {
                self.state.keychain_menu_index = self.state.keychain_menu_index.min(n - 1);
            }
        }
    }

    pub fn close_keychain_menu(&mut self) {
        self.state.show_keychain_menu = false;
    }

    pub fn keychain_menu_move(&mut self, delta: i32) {
        let n = self.state.keychain_entries().len();
        if n == 0 {
            self.state.keychain_menu_index = 0;
            return;
        }
        let idx = self.state.keychain_menu_index as i32 + delta;
        self.state.keychain_menu_index = idx.rem_euclid(n as i32) as usize;
    }

    pub fn keychain_menu_page(&mut self, pages: i32) {
        let n = self.state.keychain_entries().len();
        self.state.keychain_menu_index =
            page_list_index(self.state.keychain_menu_index, pages, n);
    }

    pub async fn activate_keychain_selection(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let entries = self.state.keychain_entries();
        let Some(entry) = entries.get(self.state.keychain_menu_index) else {
            anyhow::bail!("nothing selected");
        };
        let Some(instance_id) = entry.stack.item_instance_id else {
            anyhow::bail!("key has no instance id");
        };
        if entry.stowed {
            self.move_item(
                instance_id,
                flatland_protocol::InventoryLocation::Keychain,
                flatland_protocol::InventoryLocation::Root,
                None,
                Some(1),
            )
            .await
        } else {
            self.move_item(
                instance_id,
                flatland_protocol::InventoryLocation::Root,
                flatland_protocol::InventoryLocation::Keychain,
                None,
                Some(1),
            )
            .await
        }
    }

    pub async fn close_shop_menu(&mut self) -> anyhow::Result<()> {
        let npc_id = self
            .state
            .shop_catalog
            .as_ref()
            .map(|c| c.npc_id.clone());
        self.state.show_shop_menu = false;
        self.state.shop_catalog = None;
        self.state.clear_shop_trade_log();
        if let Some(npc_id) = npc_id {
            self.seq += 1;
            self.session
                .submit_intent(Intent::ShopClose {
                    entity_id: self.state.entity_id,
                    npc_id,
                    seq: self.seq,
                })
                .await?;
            self.state.intents_sent += 1;
        }
        Ok(())
    }

    pub async fn bank_deposit(&mut self, amount_copper: u64) -> anyhow::Result<()> {
        let Some(panel) = self.state.bank_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::BankDeposit {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                amount_copper,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn bank_withdraw(&mut self, amount_copper: u64) -> anyhow::Result<()> {
        let Some(panel) = self.state.bank_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::BankWithdraw {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                amount_copper,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn bank_transfer(
        &mut self,
        to_character_id: Option<uuid::Uuid>,
        to_name: String,
        amount_copper: u64,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.bank_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::BankTransfer {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                to_character_id,
                to_name,
                amount_copper,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn bank_menu_move(&mut self, delta: i32) {
        let n = self.state.bank_menu_options().len();
        if n == 0 || !matches!(self.state.bank_ui_mode, BankUiMode::Menu) {
            return;
        }
        let idx = self.state.bank_menu_index as i32;
        self.state.bank_menu_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub fn storage_menu_move(&mut self, delta: i32) {
        let n = self.state.storage_menu_options().len();
        if n == 0 || !matches!(self.state.storage_ui_mode, StorageUiMode::Menu) {
            return;
        }
        let idx = self.state.storage_menu_index as i32;
        self.state.storage_menu_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub fn storage_pick_move(&mut self, delta: i32) {
        let n = match &self.state.storage_ui_mode {
            StorageUiMode::StorePick { .. } => self.state.storage_store_options().len(),
            StorageUiMode::TakePick { .. } | StorageUiMode::ShipPick { .. } => {
                self.state.storage_vault_options().len()
            }
            StorageUiMode::Menu
            | StorageUiMode::StoreAmount { .. }
            | StorageUiMode::TakeAmount { .. }
            | StorageUiMode::ShipAmount { .. } => 0,
        };
        if n == 0 {
            return;
        }
        match &mut self.state.storage_ui_mode {
            StorageUiMode::StorePick { index }
            | StorageUiMode::TakePick { index }
            | StorageUiMode::ShipPick { index, .. } => {
                *index = (*index as i32 + delta).rem_euclid(n as i32) as usize;
            }
            StorageUiMode::Menu
            | StorageUiMode::StoreAmount { .. }
            | StorageUiMode::TakeAmount { .. }
            | StorageUiMode::ShipAmount { .. } => {}
        }
    }

    pub fn storage_ui_back(&mut self) {
        self.state.storage_ui_mode = match &self.state.storage_ui_mode {
            StorageUiMode::StoreAmount { pick_index, .. } => StorageUiMode::StorePick {
                index: *pick_index,
            },
            StorageUiMode::TakeAmount { pick_index, .. } => StorageUiMode::TakePick {
                index: *pick_index,
            },
            StorageUiMode::ShipAmount {
                dest_building_id,
                dest_label,
                pick_index,
                ..
            } => StorageUiMode::ShipPick {
                dest_building_id: dest_building_id.clone(),
                dest_label: dest_label.clone(),
                index: *pick_index,
            },
            StorageUiMode::StorePick { .. }
            | StorageUiMode::TakePick { .. }
            | StorageUiMode::ShipPick { .. } => StorageUiMode::Menu,
            StorageUiMode::Menu => StorageUiMode::Menu,
        };
    }

    pub fn storage_amount_append_char(&mut self, c: char) {
        match &mut self.state.storage_ui_mode {
            StorageUiMode::StoreAmount { input, .. }
            | StorageUiMode::TakeAmount { input, .. }
            | StorageUiMode::ShipAmount { input, .. } => {
                if c.is_ascii_digit() && input.len() < 8 {
                    input.push(c);
                }
            }
            _ => {}
        }
    }

    pub fn storage_amount_backspace(&mut self) {
        match &mut self.state.storage_ui_mode {
            StorageUiMode::StoreAmount { input, .. }
            | StorageUiMode::TakeAmount { input, .. }
            | StorageUiMode::ShipAmount { input, .. } => {
                input.pop();
            }
            _ => {}
        }
    }

    pub fn storage_ui_typing(&self) -> bool {
        matches!(
            self.state.storage_ui_mode,
            StorageUiMode::StoreAmount { .. }
                | StorageUiMode::TakeAmount { .. }
                | StorageUiMode::ShipAmount { .. }
        )
    }

    pub async fn confirm_storage_menu(&mut self) -> anyhow::Result<()> {
        match self.state.storage_ui_mode.clone() {
            StorageUiMode::Menu => {
                let index = self.state.storage_menu_index;
                match index {
                    0 => {
                        let opts = self.state.storage_store_options();
                        if opts.is_empty() {
                            self.state.push_log("Nothing loose to store.");
                            return Ok(());
                        }
                        self.state.storage_ui_mode = StorageUiMode::StorePick { index: 0 };
                    }
                    1 => {
                        let opts = self.state.storage_vault_options();
                        if opts.is_empty() {
                            self.state.push_log("Vault is empty.");
                            return Ok(());
                        }
                        self.state.storage_ui_mode = StorageUiMode::TakePick { index: 0 };
                    }
                    n => {
                        let dest = self
                            .state
                            .storage_panel
                            .as_ref()
                            .and_then(|p| p.ship_destinations.get(n - 2))
                            .cloned();
                        let Some(dest) = dest else {
                            return Ok(());
                        };
                        let opts = self.state.storage_vault_options();
                        if opts.is_empty() {
                            self.state
                                .push_log("Vault is empty — nothing to ship.");
                            return Ok(());
                        }
                        self.state.storage_ui_mode = StorageUiMode::ShipPick {
                            dest_building_id: dest.building_id,
                            dest_label: dest.label,
                            index: 0,
                        };
                    }
                }
            }
            StorageUiMode::StorePick { index } => {
                let opts = self.state.storage_store_options();
                let Some(opt) = opts.get(index) else {
                    self.state.push_log("Nothing loose to store.");
                    self.state.storage_ui_mode = StorageUiMode::Menu;
                    return Ok(());
                };
                self.state.storage_ui_mode = StorageUiMode::StoreAmount {
                    pick_index: index,
                    item_instance_id: opt.item_instance_id,
                    label: opt.label.clone(),
                    max_qty: opt.quantity.max(1),
                    input: String::new(),
                };
            }
            StorageUiMode::TakePick { index } => {
                let opts = self.state.storage_vault_options();
                let Some(opt) = opts.get(index) else {
                    self.state.push_log("Vault is empty.");
                    self.state.storage_ui_mode = StorageUiMode::Menu;
                    return Ok(());
                };
                self.state.storage_ui_mode = StorageUiMode::TakeAmount {
                    pick_index: index,
                    item_instance_id: opt.item_instance_id,
                    label: opt.label.clone(),
                    max_qty: opt.quantity.max(1),
                    input: String::new(),
                };
            }
            StorageUiMode::ShipPick {
                dest_building_id,
                dest_label,
                index,
            } => {
                let opts = self.state.storage_vault_options();
                let Some(opt) = opts.get(index) else {
                    self.state
                        .push_log("Vault is empty — nothing to ship.");
                    self.state.storage_ui_mode = StorageUiMode::Menu;
                    return Ok(());
                };
                self.state.storage_ui_mode = StorageUiMode::ShipAmount {
                    dest_building_id,
                    dest_label,
                    pick_index: index,
                    item_instance_id: opt.item_instance_id,
                    label: opt.label.clone(),
                    max_qty: opt.quantity.max(1),
                    input: String::new(),
                };
            }
            StorageUiMode::StoreAmount {
                item_instance_id,
                max_qty,
                input,
                ..
            } => {
                let Some(qty) = parse_storage_quantity(&input) else {
                    self.state
                        .push_log("Enter a quantity (blank or 0 = all).");
                    return Ok(());
                };
                let qty = qty.map(|n| n.min(max_qty).max(1));
                self.storage_store(item_instance_id, qty).await?;
                self.state.storage_ui_mode = StorageUiMode::Menu;
            }
            StorageUiMode::TakeAmount {
                item_instance_id,
                max_qty,
                input,
                ..
            } => {
                let Some(qty) = parse_storage_quantity(&input) else {
                    self.state
                        .push_log("Enter a quantity (blank or 0 = all).");
                    return Ok(());
                };
                let qty = qty.map(|n| n.min(max_qty).max(1));
                self.storage_take(item_instance_id, qty).await?;
                self.state.storage_ui_mode = StorageUiMode::Menu;
            }
            StorageUiMode::ShipAmount {
                dest_building_id,
                item_instance_id,
                max_qty,
                input,
                ..
            } => {
                let Some(qty) = parse_storage_quantity(&input) else {
                    self.state
                        .push_log("Enter a quantity (blank or 0 = all).");
                    return Ok(());
                };
                let qty = qty.map(|n| n.min(max_qty).max(1));
                self.storage_ship(dest_building_id, item_instance_id, qty)
                    .await?;
                self.state.storage_ui_mode = StorageUiMode::Menu;
            }
        }
        Ok(())
    }

    pub async fn confirm_bank_menu(&mut self) -> anyhow::Result<()> {
        match self.state.bank_ui_mode.clone() {
            BankUiMode::Menu => {
                let choice = self
                    .state
                    .bank_menu_options()
                    .get(self.state.bank_menu_index)
                    .copied()
                    .unwrap_or("Deposit…");
                match choice {
                    "Withdraw…" => {
                        self.state.bank_ui_mode = BankUiMode::WithdrawAmount {
                            input: String::new(),
                        };
                    }
                    "Deposit all" => self.bank_deposit(0).await?,
                    "Withdraw all" => self.bank_withdraw(0).await?,
                    "Transfer…" => {
                        self.state.bank_ui_mode = BankUiMode::TransferName {
                            input: String::new(),
                        };
                    }
                    _ => {
                        self.state.bank_ui_mode = BankUiMode::DepositAmount {
                            input: String::new(),
                        };
                    }
                }
            }
            BankUiMode::DepositAmount { input } => {
                let Some(amount) = parse_bank_copper_amount(&input) else {
                    self.state
                        .push_log("Enter a copper amount (blank or 0 = everything on person).");
                    return Ok(());
                };
                self.bank_deposit(amount).await?;
                self.state.bank_ui_mode = BankUiMode::Menu;
            }
            BankUiMode::WithdrawAmount { input } => {
                let Some(amount) = parse_bank_copper_amount(&input) else {
                    self.state
                        .push_log("Enter a copper amount (blank or 0 = full ledger).");
                    return Ok(());
                };
                self.bank_withdraw(amount).await?;
                self.state.bank_ui_mode = BankUiMode::Menu;
            }
            BankUiMode::TransferName { input } => {
                let name = input.trim().to_string();
                if name.is_empty() {
                    self.state.push_log("Enter the recipient character name.");
                    return Ok(());
                }
                self.state.bank_ui_mode = BankUiMode::TransferAmount {
                    to_name: name,
                    input: String::new(),
                };
            }
            BankUiMode::TransferAmount { to_name, input } => {
                let amount: u64 = match input.trim().parse() {
                    Ok(v) if v > 0 => v,
                    _ => {
                        self.state
                            .push_log("Enter a positive copper amount to transfer.");
                        return Ok(());
                    }
                };
                self.bank_transfer(None, to_name, amount).await?;
                self.state.bank_ui_mode = BankUiMode::Menu;
            }
        }
        Ok(())
    }

    pub fn bank_transfer_back(&mut self) {
        match &self.state.bank_ui_mode {
            BankUiMode::TransferAmount { to_name, .. } => {
                self.state.bank_ui_mode = BankUiMode::TransferName {
                    input: to_name.clone(),
                };
            }
            BankUiMode::TransferName { .. }
            | BankUiMode::DepositAmount { .. }
            | BankUiMode::WithdrawAmount { .. } => {
                self.state.bank_ui_mode = BankUiMode::Menu;
            }
            BankUiMode::Menu => {}
        }
    }

    pub fn bank_transfer_append_char(&mut self, c: char) {
        match &mut self.state.bank_ui_mode {
            BankUiMode::TransferName { input } => {
                if input.len() < 32 && !c.is_control() {
                    input.push(c);
                }
            }
            BankUiMode::DepositAmount { input }
            | BankUiMode::WithdrawAmount { input }
            | BankUiMode::TransferAmount { input, .. } => {
                if c.is_ascii_digit() && input.len() < 12 {
                    input.push(c);
                }
            }
            BankUiMode::Menu => {}
        }
    }

    pub fn bank_transfer_backspace(&mut self) {
        match &mut self.state.bank_ui_mode {
            BankUiMode::TransferName { input }
            | BankUiMode::DepositAmount { input }
            | BankUiMode::WithdrawAmount { input }
            | BankUiMode::TransferAmount { input, .. } => {
                input.pop();
            }
            BankUiMode::Menu => {}
        }
    }

    pub async fn close_bank_panel(&mut self) -> anyhow::Result<()> {
        let npc_id = self
            .state
            .bank_panel
            .as_ref()
            .map(|p| p.npc_id.clone());
        self.state.clear_bank_panel();
        if let Some(npc_id) = npc_id {
            self.seq += 1;
            self.session
                .submit_intent(Intent::BankClose {
                    entity_id: self.state.entity_id,
                    npc_id,
                    seq: self.seq,
                })
                .await?;
            self.state.intents_sent += 1;
        }
        Ok(())
    }

    pub async fn storage_store(
        &mut self,
        item_instance_id: uuid::Uuid,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.storage_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::StorageStore {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn storage_take(
        &mut self,
        item_instance_id: uuid::Uuid,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.storage_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::StorageTake {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn storage_ship(
        &mut self,
        dest_building_id: String,
        item_instance_id: uuid::Uuid,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.storage_panel.clone() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::StorageShip {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                dest_building_id,
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn close_storage_panel(&mut self) -> anyhow::Result<()> {
        let npc_id = self
            .state
            .storage_panel
            .as_ref()
            .map(|p| p.npc_id.clone());
        self.state.clear_storage_panel();
        if let Some(npc_id) = npc_id {
            self.seq += 1;
            self.session
                .submit_intent(Intent::StorageClose {
                    entity_id: self.state.entity_id,
                    npc_id,
                    seq: self.seq,
                })
                .await?;
            self.state.intents_sent += 1;
        }
        Ok(())
    }

    pub async fn close_market_panel(&mut self) -> anyhow::Result<()> {
        let npc_id = self
            .state
            .market_panel
            .as_ref()
            .map(|p| p.npc_id.clone());
        self.state.clear_market_panel();
        if let Some(npc_id) = npc_id {
            self.seq += 1;
            self.session
                .submit_intent(Intent::MarketClose {
                    entity_id: self.state.entity_id,
                    npc_id,
                    seq: self.seq,
                })
                .await?;
            self.state.intents_sent += 1;
        }
        Ok(())
    }

    pub fn market_move_selection(&mut self, delta: i32) {
        let indices = self.state.market_filtered_listing_indices();
        let n = indices.len();
        if n == 0 {
            self.state.market_menu_index = 0;
            return;
        }
        let cur = self.state.market_menu_index as i32;
        self.state.market_menu_index = (cur + delta).rem_euclid(n as i32) as usize;
    }

    pub fn market_page_selection(&mut self, pages: i32) {
        let indices = self.state.market_filtered_listing_indices();
        let n = indices.len();
        if n == 0 {
            self.state.market_menu_index = 0;
            return;
        }
        self.state.market_menu_index = page_list_index(self.state.market_menu_index, pages, n);
    }

    pub fn market_list_page(&mut self, pages: i32) {
        match &self.state.market_ui_mode {
            MarketUiMode::ListSource { index } => {
                let n = self.state.market_list_source_options().len();
                if n == 0 {
                    return;
                }
                let next = page_list_index(*index, pages, n);
                self.state.market_ui_mode = MarketUiMode::ListSource { index: next };
            }
            MarketUiMode::ListPricingMode { index, .. } => {
                let next = page_list_index(*index, pages, 2);
                if let MarketUiMode::ListPricingMode { index, .. } =
                    &mut self.state.market_ui_mode
                {
                    *index = next;
                }
            }
            MarketUiMode::ListPick { source, index } => {
                let opts = self.state.market_list_item_options(source);
                let n = opts.len();
                if n == 0 {
                    return;
                }
                let next = page_list_index(*index, pages, n);
                self.state.market_ui_mode = MarketUiMode::ListPick {
                    source: source.clone(),
                    index: next,
                };
            }
            _ => {}
        }
    }

    pub fn market_cycle_category(&mut self, delta: i32) {
        let groups = self.state.market_available_category_groups();
        // All + groups
        let mut labels: Vec<Option<&'static str>> = vec![None];
        labels.extend(groups.into_iter().map(Some));
        let n = labels.len() as i32;
        let cur = labels
            .iter()
            .position(|g| *g == self.state.market_category_filter)
            .unwrap_or(0) as i32;
        let next = (cur + delta).rem_euclid(n) as usize;
        self.state.market_category_filter = labels[next];
        self.state.market_menu_index = 0;
        if let MarketUiMode::ListPick { source, .. } = &self.state.market_ui_mode {
            let source = source.clone();
            self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
        }
    }

    pub fn focus_market_filter(&mut self) {
        self.state.market_filter_focused = true;
    }

    pub fn append_market_filter_char(&mut self, ch: char) {
        if !self.state.market_filter_focused {
            return;
        }
        if ch.is_control() {
            return;
        }
        if self.state.market_filter.len() < 48 {
            self.state.market_filter.push(ch);
            self.state.market_menu_index = 0;
            if let MarketUiMode::ListPick { source, .. } = &self.state.market_ui_mode {
                let source = source.clone();
                self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
            }
        }
    }

    pub fn market_filter_backspace(&mut self) {
        if !self.state.market_filter_focused {
            return;
        }
        self.state.market_filter.pop();
        self.state.market_menu_index = 0;
        if let MarketUiMode::ListPick { source, .. } = &self.state.market_ui_mode {
            let source = source.clone();
            self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
        }
    }

    /// Clears filter text, blurs search, or returns false if already idle.
    pub fn clear_or_blur_market_filter(&mut self) -> bool {
        if self.state.market_filter_focused {
            if !self.state.market_filter.is_empty() {
                self.state.market_filter.clear();
                self.state.market_menu_index = 0;
                if let MarketUiMode::ListPick { source, .. } = &self.state.market_ui_mode {
                    let source = source.clone();
                    self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
                }
                return true;
            }
            self.state.market_filter_focused = false;
            return true;
        }
        if !self.state.market_filter.is_empty() {
            self.state.market_filter.clear();
            self.state.market_menu_index = 0;
            if let MarketUiMode::ListPick { source, .. } = &self.state.market_ui_mode {
                let source = source.clone();
                self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
            }
            return true;
        }
        false
    }

    pub async fn market_activate_selection(&mut self) -> anyhow::Result<()> {
        if let Some((listing_id, qty, _unit, _total, _)) = self.state.market_buy_confirm.clone() {
            return self.market_confirm_buy(listing_id, qty).await;
        }
        let Some(panel) = self.state.market_panel.clone() else {
            return Ok(());
        };
        let indices = self.state.market_filtered_listing_indices();
        let Some(&raw_idx) = indices.get(self.state.market_menu_index) else {
            return Ok(());
        };
        let Some(listing) = panel.listings.get(raw_idx) else {
            return Ok(());
        };
        if listing.mine {
            self.seq += 1;
            self.session
                .submit_intent(Intent::MarketDelist {
                    entity_id: self.state.entity_id,
                    npc_id: panel.npc_id.clone(),
                    listing_id: listing.listing_id,
                    dest: flatland_protocol::GoodsLocation::Person,
                    seq: self.seq,
                })
                .await?;
            self.state.intents_sent += 1;
            return Ok(());
        }
        if listing.npc_price {
            self.state
                .push_log("NPC-price listings are bought by merchants only.");
            return Ok(());
        }
        let qty = 1u32.min(listing.quantity).max(1);
        let line = listing.unit_price_copper.saturating_mul(qty as u64);
        self.state.market_buy_confirm = Some((
            listing.listing_id,
            qty,
            listing.unit_price_copper,
            line,
            listing.display_name.clone(),
        ));
        Ok(())
    }

    pub async fn market_confirm_buy(
        &mut self,
        listing_id: uuid::Uuid,
        quantity: u32,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.market_panel.clone() else {
            self.state.market_buy_confirm = None;
            return Ok(());
        };
        self.state.market_buy_confirm = None;
        self.seq += 1;
        self.session
            .submit_intent(Intent::MarketBuy {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                listing_id,
                quantity,
                dest: flatland_protocol::GoodsLocation::Person,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Begin the list wizard (`l` in market browse).
    pub fn market_begin_list(&mut self) {
        if self.state.market_panel.is_none() {
            return;
        }
        let sources = self.state.market_list_source_options();
        if sources.is_empty() {
            self.state.push_log("Nothing to list from.");
            return;
        }
        // One source (person only) → skip straight to item pick when it has stacks.
        if sources.len() == 1 {
            let (source, _) = sources[0].clone();
            let opts = self.state.market_list_item_options(&source);
            if opts.is_empty() {
                self.state.push_log("Nothing loose to list.");
                return;
            }
            self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
            self.state.market_buy_confirm = None;
            return;
        }
        self.state.market_buy_confirm = None;
        self.state.market_ui_mode = MarketUiMode::ListSource { index: 0 };
    }

    pub fn market_ui_back(&mut self) {
        self.state.market_ui_mode = match self.state.market_ui_mode.clone() {
            MarketUiMode::Browse => MarketUiMode::Browse,
            MarketUiMode::ListSource { .. } => MarketUiMode::Browse,
            MarketUiMode::ListPick { .. } => {
                if self.state.market_list_source_options().len() <= 1 {
                    MarketUiMode::Browse
                } else {
                    MarketUiMode::ListSource { index: 0 }
                }
            }
            MarketUiMode::ListAmount {
                source,
                pick_index,
                ..
            } => MarketUiMode::ListPick {
                source,
                index: pick_index,
            },
            MarketUiMode::ListPricingMode {
                source,
                item_instance_id,
                label,
                max_qty,
                quantity,
                ..
            } => {
                let input = quantity.map(|q| q.to_string()).unwrap_or_default();
                MarketUiMode::ListAmount {
                    source,
                    pick_index: 0,
                    item_instance_id,
                    label,
                    max_qty,
                    input,
                }
            }
            MarketUiMode::ListPrice {
                source,
                item_instance_id,
                label,
                max_qty,
                quantity,
                ..
            } => MarketUiMode::ListPricingMode {
                source,
                item_instance_id,
                label,
                quantity,
                max_qty,
                index: 1,
            },
        };
    }

    pub fn market_list_move(&mut self, delta: i32) {
        match &self.state.market_ui_mode {
            MarketUiMode::ListSource { index } => {
                let n = self.state.market_list_source_options().len();
                if n == 0 {
                    return;
                }
                let next = (*index as i32 + delta).rem_euclid(n as i32) as usize;
                self.state.market_ui_mode = MarketUiMode::ListSource { index: next };
            }
            MarketUiMode::ListPricingMode { index, .. } => {
                let next = (*index as i32 + delta).rem_euclid(2) as usize;
                if let MarketUiMode::ListPricingMode { index, .. } =
                    &mut self.state.market_ui_mode
                {
                    *index = next;
                }
            }
            MarketUiMode::ListPick { source, index } => {
                let opts = self.state.market_list_item_options(source);
                let n = opts.len();
                if n == 0 {
                    return;
                }
                let next = (*index as i32 + delta).rem_euclid(n as i32) as usize;
                self.state.market_ui_mode = MarketUiMode::ListPick {
                    source: source.clone(),
                    index: next,
                };
            }
            _ => {}
        }
    }

    pub fn market_list_amount_append_char(&mut self, c: char) {
        if !c.is_ascii_digit() {
            return;
        }
        match &mut self.state.market_ui_mode {
            MarketUiMode::ListAmount { input, .. } | MarketUiMode::ListPrice { input, .. } => {
                if input.len() < 12 {
                    input.push(c);
                }
            }
            _ => {}
        }
    }

    pub fn market_list_amount_backspace(&mut self) {
        match &mut self.state.market_ui_mode {
            MarketUiMode::ListAmount { input, .. } | MarketUiMode::ListPrice { input, .. } => {
                input.pop();
            }
            _ => {}
        }
    }

    pub async fn confirm_market_list_step(&mut self) -> anyhow::Result<()> {
        match self.state.market_ui_mode.clone() {
            MarketUiMode::Browse => Ok(()),
            MarketUiMode::ListSource { index } => {
                let sources = self.state.market_list_source_options();
                let Some((source, _)) = sources.get(index).cloned() else {
                    return Ok(());
                };
                let opts = self.state.market_list_item_options(&source);
                if opts.is_empty() {
                    self.state.push_log("Nothing to list from that source.");
                    return Ok(());
                }
                self.state.market_ui_mode = MarketUiMode::ListPick { source, index: 0 };
                Ok(())
            }
            MarketUiMode::ListPick { source, index } => {
                let opts = self.state.market_list_item_options(&source);
                let Some(opt) = opts.get(index) else {
                    self.state.push_log("Nothing to list.");
                    self.state.market_ui_mode = MarketUiMode::Browse;
                    return Ok(());
                };
                self.state.market_ui_mode = MarketUiMode::ListAmount {
                    source,
                    pick_index: index,
                    item_instance_id: opt.item_instance_id,
                    label: opt.label.clone(),
                    max_qty: opt.quantity.max(1),
                    input: String::new(),
                };
                Ok(())
            }
            MarketUiMode::ListAmount {
                source,
                item_instance_id,
                label,
                max_qty,
                input,
                ..
            } => {
                let Some(qty_opt) = parse_storage_quantity(&input) else {
                    self.state.push_log("Enter a quantity (blank = all).");
                    return Ok(());
                };
                if let Some(q) = qty_opt {
                    if q > max_qty {
                        self.state
                            .push_log(format!("Only {max_qty} available."));
                        return Ok(());
                    }
                }
                self.state.market_ui_mode = MarketUiMode::ListPricingMode {
                    source,
                    item_instance_id,
                    label,
                    quantity: qty_opt,
                    max_qty,
                    index: 0,
                };
                Ok(())
            }
            MarketUiMode::ListPricingMode {
                source,
                item_instance_id,
                label,
                quantity,
                max_qty,
                index,
            } => {
                if index == 0 {
                    return self
                        .submit_market_list_intent(
                            source,
                            item_instance_id,
                            quantity,
                            0,
                            true,
                            &label,
                        )
                        .await;
                }
                self.state.market_ui_mode = MarketUiMode::ListPrice {
                    source,
                    item_instance_id,
                    label,
                    quantity,
                    max_qty,
                    input: String::new(),
                };
                Ok(())
            }
            MarketUiMode::ListPrice {
                source,
                item_instance_id,
                label,
                quantity,
                input,
                ..
            } => {
                let price = input.trim().parse::<u64>().unwrap_or(0);
                if price == 0 {
                    self.state.push_log("Enter a unit price of at least 1 copper.");
                    return Ok(());
                }
                self.submit_market_list_intent(
                    source,
                    item_instance_id,
                    quantity,
                    price,
                    false,
                    &label,
                )
                .await
            }
        }
    }

    async fn submit_market_list_intent(
        &mut self,
        source: MarketListSourceKind,
        item_instance_id: uuid::Uuid,
        quantity: Option<u32>,
        unit_price_copper: u64,
        npc_price: bool,
        label: &str,
    ) -> anyhow::Result<()> {
        let Some(panel) = self.state.market_panel.clone() else {
            self.state.market_ui_mode = MarketUiMode::Browse;
            return Ok(());
        };
        let goods = match source {
            MarketListSourceKind::Person => flatland_protocol::GoodsLocation::Person,
            MarketListSourceKind::TownStorage { building_id } => {
                flatland_protocol::GoodsLocation::TownStorage { building_id }
            }
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::MarketList {
                entity_id: self.state.entity_id,
                npc_id: panel.npc_id,
                source: goods,
                item_instance_id,
                quantity,
                unit_price_copper,
                npc_price,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if npc_price {
            self.state.push_log(format!("Listing {label} at NPC price…"));
        } else {
            self.state
                .push_log(format!("Listing {label} @ {unit_price_copper} cp…"));
        }
        self.state.market_ui_mode = MarketUiMode::Browse;
        Ok(())
    }

    /// Close shop and return to the Talk/Trade verb menu when inside an NPC session.
    pub async fn back_from_shop_menu(&mut self) -> anyhow::Result<()> {
        let return_to_verbs = self.state.npc_verb_target.is_some();
        self.close_shop_menu().await?;
        if return_to_verbs {
            self.state.show_npc_verb_menu = true;
        }
        Ok(())
    }

    pub fn shop_tab_toggle(&mut self) {
        self.state.shop_tab = match self.state.shop_tab {
            ShopTab::Buy => ShopTab::Sell,
            ShopTab::Sell => ShopTab::Buy,
        };
        self.state.shop_menu_index = 0;
        if self.state.shop_tab == ShopTab::Sell {
            self.state.shop_quantity_set_max();
        }
        self.state.clamp_shop_selection();
    }

    pub fn shop_menu_move(&mut self, delta: i32) {
        self.state.shop_menu_move(delta);
    }

    pub fn shop_quantity_adjust(&mut self, delta: i32) {
        self.state.shop_quantity_adjust(delta);
    }

    pub fn shop_quantity_set_max(&mut self) {
        self.state.shop_quantity_set_max();
    }

    pub fn shop_quantity_set_min(&mut self) {
        self.state.shop_quantity_set_min();
    }

    pub fn toggle_quest_menu(&mut self) {
        self.state.show_quest_menu = !self.state.show_quest_menu;
        if self.state.show_quest_menu {
            self.state.quest_menu_index = 0;
            self.state.quest_withdraw_confirm = false;
            self.state.show_workers_menu = false;
        }
    }

    pub fn toggle_workers_menu(&mut self) {
        if self.state.show_workers_menu {
            self.close_workers_menu_ui();
        } else {
            self.state.show_workers_menu = true;
            self.state.workers_menu_index = 0;
            self.state.show_quest_menu = false;
            self.close_worker_give_picker();
            self.close_worker_give_target_picker();
            self.close_worker_take_picker();
            self.close_worker_teach_picker();
            self.cancel_worker_rename();
        }
    }

    /// Close workers UI layers without network (caller should release attend).
    pub fn close_workers_menu_ui(&mut self) {
        self.state.show_workers_menu = false;
        self.close_worker_give_picker();
        self.close_worker_give_target_picker();
        self.close_worker_take_picker();
        self.close_worker_teach_picker();
        self.cancel_worker_rename();
    }

    /// Open the workers menu focused on `instance_id` and pause that worker's job.
    pub async fn open_workers_menu_for(&mut self, instance_id: &str) -> anyhow::Result<()> {
        let Some(idx) = self
            .state
            .hired_workers
            .iter()
            .position(|w| w.instance_id == instance_id)
        else {
            anyhow::bail!("worker not found");
        };
        let label = self.state.hired_workers[idx].label.clone();
        self.state.show_workers_menu = true;
        self.state.workers_menu_index = idx;
        self.state.show_quest_menu = false;
        self.close_worker_give_picker();
        self.close_worker_give_target_picker();
        self.close_worker_take_picker();
        self.close_worker_teach_picker();
        self.cancel_worker_rename();
        self.set_worker_attending(instance_id, true).await?;
        self.state
            .push_log(format!("Managing {label} — job paused while menu is open"));
        Ok(())
    }

    /// Close workers menu and release any attend pause.
    pub async fn close_workers_menu(&mut self) -> anyhow::Result<()> {
        self.close_workers_menu_ui();
        self.release_worker_attend().await
    }

    async fn set_worker_attending(
        &mut self,
        instance_id: &str,
        attending: bool,
    ) -> anyhow::Result<()> {
        if attending {
            if self.state.attending_worker_instance_id.as_deref() == Some(instance_id) {
                return Ok(());
            }
            // Switch target: release previous first.
            if let Some(prev) = self.state.attending_worker_instance_id.clone() {
                if prev != instance_id {
                    self.send_attend_hired_worker(&prev, false).await?;
                }
            }
            self.send_attend_hired_worker(instance_id, true).await?;
            self.state.attending_worker_instance_id = Some(instance_id.to_string());
        } else if self.state.attending_worker_instance_id.as_deref() == Some(instance_id) {
            self.send_attend_hired_worker(instance_id, false).await?;
            self.state.attending_worker_instance_id = None;
        }
        Ok(())
    }

    pub async fn release_worker_attend(&mut self) -> anyhow::Result<()> {
        let Some(id) = self.state.attending_worker_instance_id.take() else {
            return Ok(());
        };
        self.send_attend_hired_worker(&id, false).await
    }

    async fn send_attend_hired_worker(
        &mut self,
        worker_instance_id: &str,
        attending: bool,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::AttendHiredWorker {
                entity_id: self.state.entity_id,
                worker_instance_id: worker_instance_id.to_string(),
                attending,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn workers_menu_move(&mut self, delta: i32) {
        let n = self.state.hired_workers.len();
        if n == 0 {
            return;
        }
        let idx = self.state.workers_menu_index as i32;
        self.state.workers_menu_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub fn toggle_workers_menu_compact(&mut self) {
        self.state.workers_menu_compact = !self.state.workers_menu_compact;
        let mut cfg = crate::client_config::ClientConfig::load();
        let _ = cfg.save_workers_menu_compact(self.state.workers_menu_compact);
    }

    pub async fn workers_dismiss_selected(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("no worker selected");
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::DismissWorker {
                entity_id: self.state.entity_id,
                worker_instance_id: worker.instance_id.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state
            .hired_workers
            .retain(|w| w.instance_id != worker.instance_id);
        if self.state.workers_menu_index >= self.state.hired_workers.len() {
            self.state.workers_menu_index = self
                .state
                .hired_workers
                .len()
                .saturating_sub(1);
        }
        self.state.push_log(format!("Dismissed {}", worker.label));
        Ok(())
    }

    pub async fn workers_toggle_mode_selected(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("no worker selected");
        };
        let mode = match worker.mode {
            flatland_protocol::WorkerModeView::Companion => "job_loop",
            flatland_protocol::WorkerModeView::JobLoop => "idle",
            flatland_protocol::WorkerModeView::Idle => "companion",
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetWorkerMode {
                entity_id: self.state.entity_id,
                worker_instance_id: worker.instance_id,
                mode: mode.into(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn workers_confirm_action(&mut self) -> anyhow::Result<()> {
        if self.state.hired_workers.is_empty() {
            return self.hire_worker_laborer().await;
        }
        self.workers_toggle_mode_selected().await
    }

    /// Open a nearby-worker picker for the selected inventory stack (inventory `g`).
    /// Always shows a chooser so you can pick Bruce vs Cookie when several are close.
    pub fn open_worker_give_target_picker(&mut self) -> anyhow::Result<()> {
        let row = self
            .state
            .inventory_selected_row()
            .ok_or_else(|| anyhow::anyhow!("inventory empty"))?
            .clone();
        if row.from != flatland_protocol::InventoryLocation::Root {
            anyhow::bail!("select a carried item to give");
        }
        let Some(instance_id) = row.stack.item_instance_id else {
            anyhow::bail!("that stack can't be given");
        };
        let options = self.nearby_worker_give_targets();
        if options.is_empty() {
            anyhow::bail!(
                "no hired workers within {WORKER_GIVE_RANGE_M:.0} m — stand next to them"
            );
        }
        let item_label = row
            .stack
            .display_name
            .as_deref()
            .unwrap_or(&row.stack.template_id)
            .to_string();
        self.state.worker_give_target_picker = Some(WorkerGiveTargetPicker {
            item_instance_id: instance_id,
            item_label,
            quantity: None,
            options,
        });
        self.state.worker_give_target_picker_index = 0;
        self.state.show_worker_give_target_picker = true;
        // Let the target picker own keys (inventory would otherwise swallow ↑↓/Enter).
        self.state.show_inventory_menu = false;
        Ok(())
    }

    /// Hired workers within give/take range, nearest first.
    pub fn nearby_worker_give_targets(&self) -> Vec<WorkerGiveTargetOption> {
        let (px, py, _) = self.state.player_position_with_z();
        let mut options: Vec<WorkerGiveTargetOption> = self
            .state
            .hired_workers
            .iter()
            .filter_map(|w| {
                let dist = ((w.x - px).powi(2) + (w.y - py).powi(2)).sqrt();
                if dist > WORKER_GIVE_RANGE_M {
                    return None;
                }
                Some(WorkerGiveTargetOption {
                    instance_id: w.instance_id.clone(),
                    label: w.label.clone(),
                    distance_m: dist,
                })
            })
            .collect();
        options.sort_by(|a, b| {
            a.distance_m
                .partial_cmp(&b.distance_m)
                .unwrap_or(std::cmp::Ordering::Equal)
        });
        options
    }

    pub fn close_worker_give_target_picker(&mut self) {
        self.state.show_worker_give_target_picker = false;
        self.state.worker_give_target_picker = None;
        self.state.worker_give_target_picker_index = 0;
    }

    pub fn worker_give_target_picker_move(&mut self, delta: i32) {
        let Some(picker) = &self.state.worker_give_target_picker else {
            return;
        };
        let n = picker.options.len();
        if n == 0 {
            return;
        }
        let idx = self.state.worker_give_target_picker_index as i32;
        self.state.worker_give_target_picker_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub async fn confirm_worker_give_target_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.worker_give_target_picker.clone() else {
            anyhow::bail!("give target picker not open");
        };
        let Some(opt) = picker
            .options
            .get(self.state.worker_give_target_picker_index)
            .cloned()
        else {
            anyhow::bail!("no worker selected");
        };
        let Some(worker) = self
            .state
            .hired_workers
            .iter()
            .find(|w| w.instance_id == opt.instance_id)
            .cloned()
        else {
            self.close_worker_give_target_picker();
            anyhow::bail!("worker no longer hired");
        };
        self.give_item_to_worker(
            &worker.instance_id,
            &worker.label,
            worker.x,
            worker.y,
            picker.item_instance_id,
            &picker.item_label,
            picker.quantity,
        )
        .await?;
        self.close_worker_give_target_picker();
        Ok(())
    }

    /// Give the selected inventory stack to a hired worker (opens nearby-worker picker).
    pub async fn give_selected_inventory_to_worker(&mut self) -> anyhow::Result<()> {
        self.open_worker_give_target_picker()
    }

    /// Open the workers-menu give picker for the selected worker (must be in range).
    pub fn open_worker_give_picker(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("select a hired worker first");
        };
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker.x - px).powi(2) + (worker.y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!(
                "stand next to {} to give items (within {WORKER_GIVE_RANGE_M:.0} m)",
                worker.label
            );
        }
        let options = self.state.giveable_inventory_options();
        if options.is_empty() {
            anyhow::bail!("nothing in inventory to give");
        }
        self.state.worker_give_picker = Some(WorkerGivePicker {
            worker_instance_id: worker.instance_id,
            worker_label: worker.label,
            options,
        });
        self.state.worker_give_picker_index = 0;
        self.state.show_worker_give_picker = true;
        Ok(())
    }

    pub fn close_worker_give_picker(&mut self) {
        self.state.show_worker_give_picker = false;
        self.state.worker_give_picker = None;
        self.state.worker_give_picker_index = 0;
    }

    pub fn worker_give_picker_move(&mut self, delta: i32) {
        let Some(picker) = &self.state.worker_give_picker else {
            return;
        };
        let n = picker.options.len();
        if n == 0 {
            return;
        }
        let idx = self.state.worker_give_picker_index as i32;
        self.state.worker_give_picker_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    /// Confirm the selected row in the workers-menu give picker.
    pub async fn confirm_worker_give_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.worker_give_picker.clone() else {
            anyhow::bail!("give picker not open");
        };
        let Some(opt) = picker.options.get(self.state.worker_give_picker_index).cloned() else {
            anyhow::bail!("no item selected");
        };
        let Some(worker) = self
            .state
            .hired_workers
            .iter()
            .find(|w| w.instance_id == picker.worker_instance_id)
            .cloned()
        else {
            self.close_worker_give_picker();
            anyhow::bail!("worker no longer hired");
        };
        self.give_item_to_worker(
            &worker.instance_id,
            &worker.label,
            worker.x,
            worker.y,
            opt.item_instance_id,
            &opt.label,
            None,
        )
        .await?;
        // Refresh options (stack may be gone / reduced) or close when empty.
        let options = self.state.giveable_inventory_options();
        if options.is_empty() {
            self.close_worker_give_picker();
        } else {
            self.state.worker_give_picker = Some(WorkerGivePicker {
                worker_instance_id: picker.worker_instance_id,
                worker_label: picker.worker_label,
                options,
            });
            if self.state.worker_give_picker_index
                >= self
                    .state
                    .worker_give_picker
                    .as_ref()
                    .map(|p| p.options.len())
                    .unwrap_or(0)
            {
                self.state.worker_give_picker_index = self
                    .state
                    .worker_give_picker
                    .as_ref()
                    .map(|p| p.options.len().saturating_sub(1))
                    .unwrap_or(0);
            }
        }
        Ok(())
    }

    /// Open the workers-menu teach picker for the selected worker (must be in range).
    pub fn open_worker_teach_picker(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("select a hired worker first");
        };
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker.x - px).powi(2) + (worker.y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!(
                "stand next to {} to teach recipes (within {WORKER_GIVE_RANGE_M:.0} m)",
                worker.label
            );
        }
        let options = self.state.teachable_blueprint_options(&worker);
        if options.is_empty() {
            anyhow::bail!("no recipes you know that {} still needs", worker.label);
        }
        self.state.worker_teach_picker = Some(WorkerTeachPicker {
            worker_instance_id: worker.instance_id,
            worker_label: worker.label,
            worker_level: worker.level,
            options,
        });
        self.state.worker_teach_picker_index = 0;
        self.state.show_worker_teach_picker = true;
        Ok(())
    }

    pub fn close_worker_teach_picker(&mut self) {
        self.state.show_worker_teach_picker = false;
        self.state.worker_teach_picker = None;
        self.state.worker_teach_picker_index = 0;
    }

    pub fn worker_teach_picker_move(&mut self, delta: i32) {
        let Some(picker) = &self.state.worker_teach_picker else {
            return;
        };
        let n = picker.options.len();
        if n == 0 {
            return;
        }
        let idx = self.state.worker_teach_picker_index as i32;
        self.state.worker_teach_picker_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub async fn confirm_worker_teach_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.worker_teach_picker.clone() else {
            anyhow::bail!("teach picker not open");
        };
        let Some(opt) = picker.options.get(self.state.worker_teach_picker_index).cloned() else {
            anyhow::bail!("nothing selected");
        };
        if !opt.level_ok {
            anyhow::bail!(
                "{} needs level {} (is level {})",
                picker.worker_label,
                opt.min_level,
                opt.worker_level
            );
        }
        if !opt.can_afford {
            anyhow::bail!("need {} copper to teach {}", opt.cost_copper, opt.label);
        }
        let Some(worker) = self
            .state
            .hired_workers
            .iter()
            .find(|w| w.instance_id == picker.worker_instance_id)
            .cloned()
        else {
            anyhow::bail!("worker gone");
        };
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker.x - px).powi(2) + (worker.y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!("worker {} too far — stand next to them", worker.label);
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::TeachWorkerBlueprint {
                entity_id: self.state.entity_id,
                worker_instance_id: picker.worker_instance_id.clone(),
                blueprint_id: opt.blueprint_id.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.push_log(format!(
            "Teaching {} to {} ({} cp)",
            opt.label, picker.worker_label, opt.cost_copper
        ));
        self.close_worker_teach_picker();
        Ok(())
    }

    async fn give_item_to_worker(
        &mut self,
        worker_instance_id: &str,
        worker_label: &str,
        worker_x: f32,
        worker_y: f32,
        item_instance_id: uuid::Uuid,
        item_label: &str,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker_x - px).powi(2) + (worker_y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!("worker {worker_label} too far — stand next to them");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::GiveWorkerItem {
                entity_id: self.state.entity_id,
                worker_instance_id: worker_instance_id.to_string(),
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state
            .push_log(format!("Gave {item_label} to {worker_label}"));
        Ok(())
    }

    /// Open the workers-menu take picker for the selected worker (must be in range).
    pub fn open_worker_take_picker(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("select a hired worker first");
        };
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker.x - px).powi(2) + (worker.y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!(
                "stand next to {} to take items (within {WORKER_GIVE_RANGE_M:.0} m)",
                worker.label
            );
        }
        let options = Self::worker_inventory_options(&worker);
        if options.is_empty() {
            anyhow::bail!("{} isn't carrying anything", worker.label);
        }
        let initial_qty = options
            .first()
            .map(|o| if o.quantity > 1 { 1 } else { o.quantity.max(1) })
            .unwrap_or(1);
        self.state.worker_take_picker = Some(WorkerTakePicker {
            worker_instance_id: worker.instance_id,
            worker_label: worker.label,
            options,
            quantity: initial_qty,
        });
        self.state.worker_take_picker_index = 0;
        self.state.show_worker_take_picker = true;
        Ok(())
    }

    fn worker_inventory_options(
        worker: &flatland_protocol::HiredWorkerView,
    ) -> Vec<WorkerGiveOption> {
        worker
            .inventory
            .iter()
            .filter_map(|stack| {
                let item_instance_id = stack.item_instance_id?;
                let label = stack
                    .display_name
                    .clone()
                    .unwrap_or_else(|| stack.template_id.clone());
                let label = if stack.quantity > 1 {
                    format!("{label} ×{}", stack.quantity)
                } else {
                    label
                };
                Some(WorkerGiveOption {
                    item_instance_id,
                    label,
                    quantity: stack.quantity,
                    template_id: stack.template_id.clone(),
                })
            })
            .collect()
    }

    pub fn close_worker_take_picker(&mut self) {
        self.state.show_worker_take_picker = false;
        self.state.worker_take_picker = None;
        self.state.worker_take_picker_index = 0;
    }

    pub fn worker_take_picker_move(&mut self, delta: i32) {
        let Some(picker) = &self.state.worker_take_picker else {
            return;
        };
        let n = picker.options.len();
        if n == 0 {
            return;
        }
        let idx = self.state.worker_take_picker_index as i32;
        self.state.worker_take_picker_index = (idx + delta).rem_euclid(n as i32) as usize;
        self.clamp_worker_take_quantity();
    }

    pub fn worker_take_picker_adjust_quantity(&mut self, delta: i32) {
        let Some(picker) = &mut self.state.worker_take_picker else {
            return;
        };
        let max = picker
            .options
            .get(self.state.worker_take_picker_index)
            .map(|o| o.quantity.max(1))
            .unwrap_or(1);
        let next = (picker.quantity as i32 + delta).clamp(1, max as i32);
        picker.quantity = next as u32;
    }

    pub fn worker_take_picker_set_quantity_max(&mut self) {
        let Some(picker) = &mut self.state.worker_take_picker else {
            return;
        };
        let max = picker
            .options
            .get(self.state.worker_take_picker_index)
            .map(|o| o.quantity.max(1))
            .unwrap_or(1);
        picker.quantity = max;
    }

    pub fn worker_take_picker_set_quantity_min(&mut self) {
        let Some(picker) = &mut self.state.worker_take_picker else {
            return;
        };
        picker.quantity = 1;
        self.clamp_worker_take_quantity();
    }

    fn clamp_worker_take_quantity(&mut self) {
        let Some(picker) = &mut self.state.worker_take_picker else {
            return;
        };
        let max = picker
            .options
            .get(self.state.worker_take_picker_index)
            .map(|o| o.quantity.max(1))
            .unwrap_or(1);
        if picker.quantity == 0 || picker.quantity > max {
            picker.quantity = if max > 1 { 1 } else { max };
        }
    }

    pub async fn confirm_worker_take_picker(&mut self) -> anyhow::Result<()> {
        let Some(picker) = self.state.worker_take_picker.clone() else {
            anyhow::bail!("take picker not open");
        };
        let Some(opt) = picker.options.get(self.state.worker_take_picker_index).cloned() else {
            anyhow::bail!("no item selected");
        };
        let Some(worker) = self
            .state
            .hired_workers
            .iter()
            .find(|w| w.instance_id == picker.worker_instance_id)
            .cloned()
        else {
            self.close_worker_take_picker();
            anyhow::bail!("worker no longer hired");
        };
        let qty = picker.quantity.clamp(1, opt.quantity.max(1));
        let intent_qty = if qty >= opt.quantity {
            None
        } else {
            Some(qty)
        };
        self.take_item_from_worker(
            &worker.instance_id,
            &worker.label,
            worker.x,
            worker.y,
            opt.item_instance_id,
            &opt.label,
            intent_qty,
        )
        .await?;
        // Leave the picker open — server Interaction / hired-workers sync refresh
        // options. Do not optimistic-strip stacks (rejects used to look like success).
        Ok(())
    }

    async fn take_item_from_worker(
        &mut self,
        worker_instance_id: &str,
        worker_label: &str,
        worker_x: f32,
        worker_y: f32,
        item_instance_id: uuid::Uuid,
        item_label: &str,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        let (px, py, _) = self.state.player_position_with_z();
        let dist = ((worker_x - px).powi(2) + (worker_y - py).powi(2)).sqrt();
        if dist > WORKER_GIVE_RANGE_M {
            anyhow::bail!("worker {worker_label} too far — stand next to them");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::TakeWorkerItem {
                entity_id: self.state.entity_id,
                worker_instance_id: worker_instance_id.to_string(),
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        let qty_note = quantity
            .map(|q| format!(" ×{q}"))
            .unwrap_or_default();
        self.state
            .push_log(format!("Taking {item_label}{qty_note} from {worker_label}…"));
        Ok(())
    }

    pub async fn hire_worker_laborer(&mut self) -> anyhow::Result<()> {
        if !self.state.has_worker_lodging() {
            anyhow::bail!("no free lodging slots — place another camp bed (or bunk)");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::HireWorker {
                entity_id: self.state.entity_id,
                def_id: "worker_laborer".into(),
                wage_copper_per_interval: 8,
                lodging_container_id: None,
                job_yaml: None,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn open_worker_route_editor_for_selected(&mut self) -> anyhow::Result<()> {
        let Some(worker) = self
            .state
            .hired_workers
            .get(self.state.workers_menu_index)
            .cloned()
        else {
            anyhow::bail!("select a hired worker first");
        };
        let lodging = worker.lodging_container_id.clone().or_else(|| {
            crate::worker_route_editor::owned_lodging_container_ids(
                &self.state.placed_containers,
                self.state.character_id,
            )
            .into_iter()
            .next()
            .map(|(id, _)| id)
        });
        let label = worker.label.clone();
        let editor = if let Some(route) = &worker.route {
            crate::worker_route_editor::WorkerRouteEditorState::from_saved_route(
                worker.instance_id,
                worker.label,
                route,
                lodging,
            )
        } else {
            crate::worker_route_editor::WorkerRouteEditorState::new(
                worker.instance_id,
                worker.label,
                lodging,
            )
        };
        self.state.worker_route_editor = Some(editor);
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            if let Some(collapsed) =
                crate::client_config::ClientConfig::load().worker_route_panel_collapsed
            {
                ed.panel_collapsed = collapsed;
            }
        }
        self.state.show_workers_menu = false;
        self.state.push_log(format!(
            "Route editor: {label} — a add stop · Enter edit stop · click rows · s save · Esc back/close",
        ));
        Ok(())
    }

    pub fn close_worker_route_editor(&mut self) {
        self.state.worker_route_editor = None;
    }

    pub fn worker_route_editor_toggle_panel(&mut self) {
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.toggle_panel_collapsed();
            let collapsed = ed.panel_collapsed;
            let mut cfg = crate::client_config::ClientConfig::load();
            let _ = cfg.save_worker_route_panel_collapsed(collapsed);
        }
    }

    pub fn worker_route_editor_add_waypoint(&mut self, x: f32, y: f32, z: f32) {
        let n = {
            let Some(ed) = self.state.worker_route_editor.as_mut() else {
                return;
            };
            ed.append_waypoint(x, y, z);
            ed.stop_count()
        };
        self.state
            .push_log(format!("Route: waypoint #{n} at ({x:.0}, {y:.0})"));
    }

    // ---- picker candidate snapshots ----------------------------------

    fn re_container_candidates(&self) -> Vec<crate::worker_route_editor::ContainerCandidate> {
        let (px, py, _) = self.state.player_position_with_z();
        crate::worker_route_editor::owned_container_candidates_with_occupants_and_buildings(
            &self.state.placed_containers,
            &self.state.buildings,
            self.state.character_id,
            px,
            py,
            &self.state.hired_workers,
        )
    }

    fn re_node_candidates(&self) -> Vec<crate::worker_route_editor::NodeCandidate> {
        self.state.route_editor_node_candidates()
    }

    fn re_open_harvest_picker(
        &mut self,
        index: usize,
        picked: std::collections::BTreeSet<String>,
    ) {
        use crate::worker_route_editor::{RouteEditorSheet as S, ROUTE_PICKER_DONE_ROW};
        let nodes = self.state.route_editor_node_candidates();
        let index = if nodes.is_empty() {
            ROUTE_PICKER_DONE_ROW
        } else {
            index.max(1).min(nodes.len())
        };
        self.re_open_sheet(S::HarvestPicker {
            index,
            picked,
            nodes,
        });
    }

    fn re_npc_candidates(&self) -> Vec<crate::worker_route_editor::TradeNpcCandidate> {
        let (px, py, _) = self.state.player_position_with_z();
        crate::worker_route_editor::trade_npc_candidates(&self.state.npcs, px, py)
    }

    fn re_template_candidates(&self) -> Vec<String> {
        let mut extra = Vec::new();
        if let Some(ed) = self.state.worker_route_editor.as_ref() {
            for stop in &ed.stops {
                match stop {
                    crate::worker_route_editor::WorkerRouteStop::DepositAt {
                        filter: Some(filter),
                        ..
                    } => extra.extend(filter.iter().cloned()),
                    crate::worker_route_editor::WorkerRouteStop::TradeWith { template, .. } => {
                        extra.push(template.clone());
                    }
                    crate::worker_route_editor::WorkerRouteStop::CraftAt { blueprint, .. } => {
                        if let Some(bp) = self.state.blueprints.iter().find(|b| b.id == *blueprint) {
                            extra.push(bp.output.clone());
                            for input in &bp.inputs {
                                extra.push(input.template_id.clone());
                            }
                        }
                    }
                    crate::worker_route_editor::WorkerRouteStop::WithdrawFrom { items, .. } => {
                        for it in items {
                            extra.push(it.template.clone());
                        }
                    }
                    _ => {}
                }
            }
            // Worker-known recipe outputs even if the player hasn't learned them yet.
            if let Some(worker) = self
                .state
                .hired_workers
                .iter()
                .find(|w| w.instance_id == ed.worker_instance_id)
            {
                for recipe in &worker.known_blueprint_ids {
                    if let Some(bp) = self.state.blueprints.iter().find(|b| &b.id == recipe) {
                        extra.push(bp.output.clone());
                    }
                }
            }
        }
        crate::worker_route_editor::route_item_template_candidates(
            &self.state.placed_containers,
            self.state.character_id,
            &self.state.inventory,
            &self.state.blueprints,
            &self.state.resource_nodes,
            &extra,
        )
    }

    fn re_blueprint_ids(&self) -> Vec<String> {
        let worker_known: Option<&[String]> = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| {
                self.state
                    .hired_workers
                    .iter()
                    .find(|w| w.instance_id == ed.worker_instance_id)
            })
            .map(|w| w.known_blueprint_ids.as_slice());
        crate::worker_route_editor::worker_craft_blueprint_ids(
            &self.state.blueprints,
            worker_known,
        )
    }

    fn re_bed_candidates(&self) -> Vec<(String, String)> {
        crate::worker_route_editor::owned_lodging_container_ids(
            &self.state.placed_containers,
            self.state.character_id,
        )
    }

    fn re_container_contents(&self, container_id: &str) -> Vec<flatland_protocol::ItemStack> {
        self.state
            .placed_containers
            .iter()
            .find(|c| c.id == container_id)
            .map(|c| c.contents.clone())
            .unwrap_or_default()
    }

    // ---- sheet navigation (`plans/33`) --------------------------------

    fn re_sheet_supports_filter(&self) -> bool {
        use crate::worker_route_editor::RouteEditorSheet as S;
        self.state
            .worker_route_editor
            .as_ref()
            .is_some_and(|ed| {
                matches!(
                    ed.sheet,
                    S::HarvestPicker { .. }
                        | S::SellItem { .. }
                        | S::DepositFilter { .. }
                        | S::WithdrawItems { .. }
                        | S::WithdrawContainers { .. }
                        | S::DepositContainers { .. }
                        | S::SellNpcs { .. }
                        | S::CraftBlueprint { .. }
                        | S::BedPicker { .. }
                )
            })
    }

    /// Whether a sheet row is shown under the current `/` filter.
    pub fn re_sheet_row_visible(&self, row: usize) -> bool {
        use crate::worker_route_editor::{
            harvest_picker_row_matches, list_filter_row_matches, RouteEditorSheet as S,
            ROUTE_PICKER_DONE_ROW, SELL_ITEM_TOGGLE_ROW,
        };
        let Some(ed) = self.state.worker_route_editor.as_ref() else {
            return false;
        };
        let filter = &ed.sheet_filter;
        match &ed.sheet {
            S::HarvestPicker { nodes, .. } => {
                harvest_picker_row_matches(nodes, row, filter)
            }
            S::SellItem { templates, .. } => {
                if row == ROUTE_PICKER_DONE_ROW || row == SELL_ITEM_TOGGLE_ROW {
                    return true;
                }
                let slot = row.saturating_sub(2);
                templates.get(slot).is_some_and(|t| {
                    let label = self.state.template_display_name(t);
                    list_filter_row_matches(filter, None, &[t.as_str(), label.as_str()])
                })
            }
            S::DepositFilter { rows, .. } => {
                if row >= rows.len() {
                    return true;
                }
                rows.get(row).is_some_and(|(t, _)| {
                    let label = self.state.template_display_name(t);
                    list_filter_row_matches(filter, None, &[t.as_str(), label.as_str()])
                })
            }
            S::WithdrawItems { lines, .. } => {
                if row >= lines.len() {
                    return true;
                }
                lines.get(row).is_some_and(|l| {
                    let label = self.state.template_display_name(&l.template);
                    list_filter_row_matches(filter, None, &[l.template.as_str(), label.as_str()])
                })
            }
            S::WithdrawContainers { .. } | S::DepositContainers { .. } => self
                .re_container_candidates()
                .get(row)
                .is_some_and(|c| {
                    list_filter_row_matches(
                        filter,
                        Some(c.dist),
                        &[c.name.as_str(), c.summary.as_str(), c.id.as_str()],
                    )
                }),
            S::SellNpcs { .. } => {
                if row == 0 {
                    return true;
                }
                self.re_npc_candidates().get(row - 1).is_some_and(|n| {
                    list_filter_row_matches(filter, Some(n.dist), &[n.label.as_str(), n.id.as_str()])
                })
            }
            S::CraftBlueprint { .. } => self.re_blueprint_ids().get(row).is_some_and(|id| {
                let label = self
                    .state
                    .blueprints
                    .iter()
                    .find(|b| &b.id == id)
                    .map(|b| {
                        if b.label.is_empty() {
                            id.as_str()
                        } else {
                            b.label.as_str()
                        }
                    })
                    .unwrap_or(id.as_str());
                list_filter_row_matches(filter, None, &[id.as_str(), label])
            }),
            S::BedPicker { .. } => self.re_bed_candidates().get(row).is_some_and(|(id, name)| {
                list_filter_row_matches(filter, None, &[name.as_str(), id.as_str()])
            }),
            _ => true,
        }
    }

    fn re_sheet_clamp_index(&mut self) {
        let count = self.re_sheet_row_count();
        if count == 0 {
            return;
        }
        let cur = self.re_sheet_index();
        if self.re_sheet_row_visible(cur) {
            return;
        }
        for offset in 1..count {
            if cur + offset < count && self.re_sheet_row_visible(cur + offset) {
                self.re_sheet_set_index(cur + offset);
                return;
            }
            if cur >= offset && self.re_sheet_row_visible(cur - offset) {
                self.re_sheet_set_index(cur - offset);
                return;
            }
        }
    }

    fn re_sheet_set_index(&mut self, index: usize) {
        use crate::worker_route_editor::RouteEditorSheet as S;
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        match &mut ed.sheet {
            S::AddMenu { index: slot }
            | S::WaypointMenu { index: slot }
            | S::HarvestPicker { index: slot, .. }
            | S::WithdrawContainers { index: slot }
            | S::DepositContainers { index: slot }
            | S::SellNpcs { index: slot }
            | S::CraftBlueprint { index: slot }
            | S::BedPicker { index: slot }
            | S::FarmPlotPicker { index: slot, .. }
            | S::FarmPlantSeed { index: slot, .. }
            | S::WithdrawItems { index: slot, .. }
            | S::DepositFilter { index: slot, .. }
            | S::SellItem { index: slot, .. } => *slot = index,
            _ => {}
        }
    }

    pub fn re_focus_sheet_filter(&mut self) {
        if !self.re_sheet_supports_filter() {
            return;
        }
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.sheet_filter_focused = true;
        }
    }

    pub fn re_blur_sheet_filter_keep_text(&mut self) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if !ed.sheet_filter_focused {
            return;
        }
        ed.sheet_filter_focused = false;
        self.re_sheet_clamp_index();
    }

    pub fn clear_or_blur_re_sheet_filter(&mut self) -> bool {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return false;
        };
        if ed.sheet_filter_focused {
            ed.sheet_filter_focused = false;
            self.re_sheet_clamp_index();
            return true;
        }
        if !ed.sheet_filter.is_empty() {
            ed.sheet_filter.clear();
            self.re_sheet_clamp_index();
            return true;
        }
        false
    }

    pub fn re_append_sheet_filter_char(&mut self, ch: char) {
        if ch.is_control() {
            return;
        }
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if !ed.sheet_filter_focused {
            return;
        }
        ed.sheet_filter.push(ch);
        self.re_sheet_set_index(0);
        self.re_sheet_clamp_index();
    }

    pub fn re_sheet_filter_backspace(&mut self) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if !ed.sheet_filter_focused {
            return;
        }
        ed.sheet_filter.pop();
        self.re_sheet_set_index(0);
        self.re_sheet_clamp_index();
    }

    /// Row count of the current sheet (for cursor wrapping).
    pub fn re_sheet_row_count(&self) -> usize {
        use crate::worker_route_editor::{
            harvest_picker_row_count, sell_item_picker_row_count, RouteEditorSheet as S,
        };
        let Some(ed) = self.state.worker_route_editor.as_ref() else {
            return 0;
        };
        match &ed.sheet {
            S::Stops => ed.stops.len(),
            S::AddMenu { .. } => crate::worker_route_editor::ADD_MENU.len(),
            S::WaypointMenu { .. } => crate::worker_route_editor::WAYPOINT_MENU.len(),
            S::WaypointMapPick => 0,
            S::HarvestPicker { nodes, .. } => harvest_picker_row_count(nodes.len()),
            S::WithdrawContainers { .. } | S::DepositContainers { .. } => {
                self.re_container_candidates().len()
            }
            S::WithdrawItems { lines, .. } => lines.len() + 1, // + Done row
            S::DepositFilter { rows, .. } => rows.len() + 1,   // + Done row
            S::SellNpcs { .. } => self.re_npc_candidates().len() + 1, // + auto row
            S::SellItem { templates, .. } => sell_item_picker_row_count(templates.len()),
            S::CraftBlueprint { .. } => self.re_blueprint_ids().len(),
            S::WaitEntry { .. } => 1,
            S::BedPicker { .. } => self.re_bed_candidates().len(),
            S::FarmPlotPicker { .. } => self.re_farm_plot_candidates().len(),
            S::FarmPlantSeed { seeds, .. } => seeds.len(),
        }
    }

    /// Current sheet cursor index (0 for sheets without one).
    pub fn re_sheet_index(&self) -> usize {
        use crate::worker_route_editor::RouteEditorSheet as S;
        let Some(ed) = self.state.worker_route_editor.as_ref() else {
            return 0;
        };
        match &ed.sheet {
            S::AddMenu { index }
            | S::WaypointMenu { index }
            | S::HarvestPicker { index, .. }
            | S::WithdrawContainers { index }
            | S::DepositContainers { index }
            | S::SellNpcs { index }
            | S::CraftBlueprint { index }
            | S::BedPicker { index }
            | S::FarmPlotPicker { index, .. }
            | S::FarmPlantSeed { index, .. }
            | S::WithdrawItems { index, .. }
            | S::DepositFilter { index, .. }
            | S::SellItem { index, .. } => *index,
            _ => 0,
        }
    }

    /// Move the current sheet's cursor, wrapping within its rows.
    pub fn re_sheet_move(&mut self, delta: i32) {
        let count = self.re_sheet_row_count();
        if count == 0 {
            return;
        }
        let cur = self.re_sheet_index();
        let next = step_filtered_index(cur, delta, count, |i| self.re_sheet_row_visible(i));
        self.re_sheet_set_index(next);
    }

    pub fn re_sheet_page(&mut self, pages: i32) {
        let count = self.re_sheet_row_count();
        if count == 0 {
            return;
        }
        let cur = self.re_sheet_index();
        let next = page_filtered_index(cur, pages, count, |i| self.re_sheet_row_visible(i));
        self.re_sheet_set_index(next);
    }

    /// `[`/`]` on a sheet: adjust quantity (withdraw lines, wait ticks).
    pub fn re_sheet_adjust(&mut self, delta: i32) {
        use crate::worker_route_editor::RouteEditorSheet as S;
        let index = self.re_sheet_index();
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        match &mut ed.sheet {
            S::WithdrawItems { lines, .. } => {
                if let Some(line) = lines.get_mut(index) {
                    line.adjust_qty(delta);
                }
            }
            S::WaitEntry { ticks } => {
                *ticks = (*ticks as i64 + delta as i64 * 10).clamp(10, 10_000) as u64;
            }
            _ => {}
        }
    }

    pub fn re_sheet_back(&mut self) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        use crate::worker_route_editor::RouteEditorSheet as S;
        let was_editing = ed.editing_index.is_some();
        let from_top_picker = matches!(
            ed.sheet,
            S::WithdrawContainers { .. } | S::DepositContainers { .. } | S::SellNpcs { .. }
        );
        ed.sheet_back();
        if was_editing && from_top_picker && matches!(ed.sheet, S::Stops) {
            // Chest retarget commits on pick; Esc here just ends the edit sheet.
            self.state
                .push_log("Route: left edit sheet — press s to save current stops".to_string());
        }
    }

    /// True when the editor is at its root sheet (Esc should close it).
    pub fn re_at_root_sheet(&self) -> bool {
        self.state
            .worker_route_editor
            .as_ref()
            .is_some_and(|ed| matches!(ed.sheet, crate::worker_route_editor::RouteEditorSheet::Stops))
    }

    pub fn re_open_add_menu(&mut self) {
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.open_add_menu();
        }
    }

    pub fn re_open_bed_picker(&mut self) {
        let beds = self.re_bed_candidates();
        if beds.is_empty() {
            self.state
                .push_log("Route: place a camp bed first".to_string());
            return;
        }
        let current = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.lodging_container_id.clone());
        let index = current
            .and_then(|id| beds.iter().position(|(bid, _)| bid == &id))
            .unwrap_or(0);
        self.re_open_sheet(crate::worker_route_editor::RouteEditorSheet::BedPicker { index });
    }

    fn re_open_sheet(&mut self, sheet: crate::worker_route_editor::RouteEditorSheet) {
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.open_sheet(sheet);
        }
    }

    /// Confirm a sheet's stop and log the outcome.
    fn re_confirm_stop(
        &mut self,
        stop: crate::worker_route_editor::WorkerRouteStop,
        what: String,
    ) {
        let appended = self
            .state
            .worker_route_editor
            .as_mut()
            .is_some_and(|ed| ed.confirm_stop(stop));
        if appended {
            self.state.push_log(format!("Route: + {what}"));
        } else {
            self.state
                .push_log(format!("Route: {what} already in route — selected it"));
        }
    }

    fn re_open_withdraw_items(&mut self, container_id: String) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteEditorState, WorkerRouteStop};
        let contents = self.re_container_contents(&container_id);
        // When editing, keep the stop's item picks even if the player retargets
        // to a different (possibly empty) chest — otherwise Done has nothing to
        // confirm and the edit appears to "revert".
        let existing = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.editing_index.and_then(|i| ed.stops.get(i)))
            .and_then(|stop| match stop {
                WorkerRouteStop::WithdrawFrom { items, .. } => Some(items.clone()),
                _ => None,
            })
            .unwrap_or_default();
        let lines = WorkerRouteEditorState::withdraw_line_drafts(&contents, &existing);
        // Commit the new chest immediately while editing so Esc-before-Done still
        // keeps the retarget (items update only when Done is pressed).
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            let _ = ed.retarget_withdraw_container(container_id.clone());
        }
        self.re_open_sheet(S::WithdrawItems {
            container_id,
            lines,
            index: 0,
        });
    }

    fn re_withdraw_items_activate(&mut self, index: usize) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteEditorState, WorkerRouteStop};
        enum Outcome {
            Cycled,
            Confirmed(String),
            Empty,
        }
        let outcome = {
            let Some(ed) = self.state.worker_route_editor.as_mut() else {
                return;
            };
            let S::WithdrawItems {
                container_id,
                lines,
                index: sheet_index,
            } = &mut ed.sheet
            else {
                return;
            };
            *sheet_index = index;
            if index < lines.len() {
                lines[index].cycle();
                Outcome::Cycled
            } else {
                let items = WorkerRouteEditorState::withdraw_items_from_lines(lines);
                if items.is_empty() {
                    Outcome::Empty
                } else {
                    let stop = WorkerRouteStop::WithdrawFrom {
                        container_id: container_id.clone(),
                        items,
                    };
                    let summary = stop.summary();
                    ed.confirm_stop(stop);
                    Outcome::Confirmed(summary)
                }
            }
        };
        match outcome {
            Outcome::Cycled => {}
            Outcome::Confirmed(what) => self.state.push_log(format!("Route: + {what}")),
            Outcome::Empty => self
                .state
                .push_log("Route: pick at least one item (Space/Enter toggles All/qty)".to_string()),
        }
    }

    fn re_open_deposit_filter(&mut self, container_id: String) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteStop};
        // Preserve filter when retargeting the deposit chest while editing.
        let existing_filter = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.editing_index.and_then(|i| ed.stops.get(i)))
            .and_then(|stop| match stop {
                WorkerRouteStop::DepositAt { filter, .. } => {
                    Some(filter.clone().unwrap_or_default())
                }
                _ => None,
            });
        let mut candidates = self.re_template_candidates();
        if let Some(ref chosen) = existing_filter {
            for t in chosen {
                if !candidates.iter().any(|c| c == t) {
                    candidates.push(t.clone());
                }
            }
            candidates.sort();
            candidates.dedup();
        }
        let rows: Vec<(String, bool)> = match existing_filter {
            Some(chosen) => candidates
                .iter()
                .map(|t| (t.clone(), chosen.contains(t)))
                .collect(),
            None => candidates.into_iter().map(|t| (t, false)).collect(),
        };
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            let _ = ed.retarget_deposit_container(container_id.clone());
        }
        self.re_open_sheet(S::DepositFilter {
            container_id,
            rows,
            index: 0,
        });
    }

    fn re_deposit_filter_activate(&mut self, index: usize) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteStop};
        let mut confirmed: Option<String> = None;
        {
            let Some(ed) = self.state.worker_route_editor.as_mut() else {
                return;
            };
            let S::DepositFilter {
                container_id,
                rows,
                index: sheet_index,
            } = &mut ed.sheet
            else {
                return;
            };
            *sheet_index = index;
            if index < rows.len() {
                rows[index].1 = !rows[index].1;
            } else {
                // "Done" row.
                let chosen: Vec<String> = rows
                    .iter()
                    .filter(|(_, on)| *on)
                    .map(|(t, _)| t.clone())
                    .collect();
                let filter = if chosen.is_empty() { None } else { Some(chosen) };
                let stop = WorkerRouteStop::DepositAt {
                    container_id: container_id.clone(),
                    filter,
                };
                confirmed = Some(stop.summary());
                ed.confirm_stop(stop);
            }
        }
        if let Some(what) = confirmed {
            self.state.push_log(format!("Route: + {what}"));
        }
    }

    fn re_open_sell_item(&mut self, npc_id: Option<String>) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteStop};
        let templates = self.re_template_candidates();
        if templates.is_empty() {
            self.state.push_log(
                "Route: no item templates available — learn a craft recipe or place a harvest node first"
                    .to_string(),
            );
            return;
        }
        // Prefill when editing an existing sell stop.
        let (pre_npc, pre_template, pre_all) = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.editing_index.and_then(|i| ed.stops.get(i)))
            .and_then(|stop| match stop {
                WorkerRouteStop::TradeWith {
                    npc_id,
                    template,
                    sell_all,
                } => Some((npc_id.clone(), Some(template.clone()), *sell_all)),
                _ => None,
            })
            .unwrap_or((None, None, true));
        let npc_id = npc_id.or(pre_npc);
        let mut picked = std::collections::BTreeSet::new();
        if let Some(t) = pre_template {
            picked.insert(t);
        }
        self.re_open_sheet(S::SellItem {
            npc_id,
            templates,
            index: if picked.is_empty() {
                crate::worker_route_editor::SELL_ITEM_TOGGLE_ROW
            } else {
                2
            },
            sell_all: pre_all,
            picked,
        });
    }

    fn re_sell_item_activate(&mut self, index: usize) {
        use crate::worker_route_editor::{
            RouteEditorSheet as S, ROUTE_PICKER_DONE_ROW, SELL_ITEM_TOGGLE_ROW,
        };
        let mut batch_log: Option<String> = None;
        {
            let Some(ed) = self.state.worker_route_editor.as_mut() else {
                return;
            };
            let S::SellItem {
                npc_id,
                templates,
                index: sheet_index,
                sell_all,
                picked,
            } = &mut ed.sheet
            else {
                return;
            };
            *sheet_index = index;
            if index == ROUTE_PICKER_DONE_ROW {
                if picked.is_empty() {
                    batch_log = Some(
                        "Route: pick at least one item (Space toggles, Done confirms)".into(),
                    );
                } else {
                    let picks: Vec<String> = picked.iter().cloned().collect();
                    let npc = npc_id.clone();
                    let all = *sell_all;
                    let added = ed.confirm_trade_picks(npc, &picks, all);
                    batch_log = Some(format!("Route: + {added} sell stop(s)"));
                }
            } else if index == SELL_ITEM_TOGGLE_ROW {
                *sell_all = !*sell_all;
            } else if let Some(template) = templates.get(index.saturating_sub(2)) {
                if picked.contains(template) {
                    picked.remove(template);
                } else {
                    picked.insert(template.clone());
                }
            }
        }
        if let Some(msg) = batch_log {
            self.state.push_log(msg);
        }
    }

    /// Enter on the stop list: open the selected stop's sheet, prefilled.
    pub fn re_edit_selected_stop(&mut self) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteStop};
        let Some(stop) = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.stops.get(ed.selected_stop_index).cloned())
        else {
            self.state
                .push_log("Route: no stop selected — press a to add one".to_string());
            return;
        };
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.begin_edit_selected();
        }
        match stop {
            WorkerRouteStop::Waypoint { .. } => {
                self.re_open_sheet(S::WaypointMenu { index: 0 });
            }
            WorkerRouteStop::HarvestNode { node_id } => {
                let nodes = self.state.route_editor_node_candidates();
                if nodes.is_empty() {
                    self.re_cancel_edit();
                    self.state
                        .push_log("Route: no harvestable nodes visible to retarget".to_string());
                } else {
                    let mut picked = std::collections::BTreeSet::new();
                    picked.insert(node_id.clone());
                    let index = nodes
                        .iter()
                        .position(|n| n.id == node_id)
                        .map(|i| i + 1)
                        .unwrap_or(1);
                    self.re_open_harvest_picker(index, picked);
                }
            }
            WorkerRouteStop::WithdrawFrom { container_id, .. } => {
                // Open the container picker so the player can retarget storage
                // (previously jumped straight to items on the same chest).
                let containers = self.re_container_candidates();
                if containers.is_empty() {
                    self.re_cancel_edit();
                    self.state
                        .push_log("Route: place a storage chest first".to_string());
                } else {
                    let index = containers
                        .iter()
                        .position(|c| c.id == container_id)
                        .unwrap_or(0);
                    self.re_open_sheet(S::WithdrawContainers { index });
                }
            }
            WorkerRouteStop::DepositAt { container_id, .. } => {
                let containers = self.re_container_candidates();
                if containers.is_empty() {
                    self.re_cancel_edit();
                    self.state
                        .push_log("Route: place a storage chest first".to_string());
                } else {
                    let index = containers
                        .iter()
                        .position(|c| c.id == container_id)
                        .unwrap_or(0);
                    self.re_open_sheet(S::DepositContainers { index });
                }
            }
            WorkerRouteStop::TradeWith { npc_id, .. } => {
                let npcs = self.re_npc_candidates();
                // Row 0 is "auto / nearest"; rows 1.. map to npcs.
                let index = npc_id
                    .as_ref()
                    .and_then(|id| npcs.iter().position(|n| &n.id == id).map(|i| i + 1))
                    .unwrap_or(0);
                self.re_open_sheet(S::SellNpcs { index });
            }
            WorkerRouteStop::CraftAt { blueprint, .. } => {
                let bps = self.re_blueprint_ids();
                let index = bps.iter().position(|b| b == &blueprint).unwrap_or(0);
                if bps.is_empty() {
                    self.re_cancel_edit();
                    self.state
                        .push_log("Route: no known blueprints to retarget".to_string());
                } else {
                    self.re_open_sheet(S::CraftBlueprint { index });
                }
            }
            WorkerRouteStop::CultivatePlot { .. } => {
                self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Cultivate);
            }
            WorkerRouteStop::PlantPlot { .. } => {
                self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Plant);
            }
            WorkerRouteStop::HarvestPlot { .. } => {
                self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Harvest);
            }
            WorkerRouteStop::RestIfNeeded => {
                self.re_cancel_edit();
                self.state
                    .push_log("Route: rest has no settings (change the bed with l)".to_string());
            }
            WorkerRouteStop::Wait { wait_ticks } => {
                self.re_open_sheet(S::WaitEntry { ticks: wait_ticks });
            }
        }
    }

    fn re_cancel_edit(&mut self) {
        if let Some(ed) = self.state.worker_route_editor.as_mut() {
            ed.editing_index = None;
        }
    }

    // ---- mouse clicks inside the overlay ------------------------------

    pub fn worker_route_editor_ui_click(
        &mut self,
        click: crate::worker_route_editor::RouteEditorClick,
    ) {
        use crate::worker_route_editor::{RouteEditorClick, RouteEditorSheet as S};
        match click {
            RouteEditorClick::SelectStop(i) => {
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    ed.sheet = S::Stops;
                    ed.select_stop(i);
                }
            }
            RouteEditorClick::OpenBedPicker => self.re_open_bed_picker(),
            RouteEditorClick::SheetRow(i) => self.re_sheet_row_activate(i),
            RouteEditorClick::TogglePanel => self.worker_route_editor_toggle_panel(),
        }
    }

    /// Activate (Enter / click) a row of the current sheet.
    pub fn re_sheet_row_activate(&mut self, row: usize) {
        use crate::worker_route_editor::{RouteEditorSheet as S, WorkerRouteStop};
        let Some(sheet) = self
            .state
            .worker_route_editor
            .as_ref()
            .map(|ed| ed.sheet.clone())
        else {
            return;
        };
        match sheet {
            S::Stops => {
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    ed.select_stop(row);
                }
            }
            S::AddMenu { .. } => match row {
                0 => self.re_open_sheet(S::WaypointMenu { index: 0 }),
                1 => {
                    if self.re_node_candidates().is_empty() {
                        self.state
                            .push_log("Route: no harvestable nodes visible in this region".to_string());
                    } else {
                        self.re_open_harvest_picker(1, std::collections::BTreeSet::new());
                    }
                }
                2 | 3 => {
                    if self.re_container_candidates().is_empty() {
                        self.state
                            .push_log("Route: place a storage chest first".to_string());
                    } else if row == 2 {
                        self.re_open_sheet(S::WithdrawContainers { index: 0 });
                    } else {
                        self.re_open_sheet(S::DepositContainers { index: 0 });
                    }
                }
                4 => {
                    if self.re_template_candidates().is_empty() {
                        self.state.push_log(
                            "Route: no item templates available — learn a craft recipe or place a harvest node first"
                                .to_string(),
                        );
                    } else {
                        self.re_open_sheet(S::SellNpcs { index: 0 });
                    }
                }
                5 => {
                    if self.re_blueprint_ids().is_empty() {
                        self.state.push_log(
                            "Route: no craft recipes this worker knows — laborers know oak_to_lumber (needs a handsaw in their inventory)"
                                .to_string(),
                        );
                    } else {
                        self.re_open_sheet(S::CraftBlueprint { index: 0 });
                    }
                }
                6 => self.re_confirm_stop(
                    WorkerRouteStop::RestIfNeeded,
                    "rest at lodging (if needed)".into(),
                ),
                7 => self.re_open_sheet(S::WaitEntry { ticks: 60 }),
                8 => self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Cultivate),
                9 => self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Plant),
                10 => self.re_open_farm_plot_picker(crate::worker_route_editor::FarmPlotAction::Harvest),
                _ => {}
            },
            S::WaypointMenu { .. } => match row {
                0 => {
                    let (x, y, z) = self.state.player_position_with_z();
                    let stop = WorkerRouteStop::Waypoint { x, y, z };
                    self.re_confirm_stop(stop, format!("waypoint ({x:.0}, {y:.0})"));
                }
                1 => {
                    self.re_open_sheet(S::WaypointMapPick);
                    self.state.push_log("Route: click the map to place the waypoint (Esc to finish)".to_string());
                }
                _ => {}
            },
            S::HarvestPicker { .. } => {
                let mut log: Option<String> = None;
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    let S::HarvestPicker {
                        index: sheet_index,
                        picked,
                        nodes,
                    } = &mut ed.sheet
                    else {
                        return;
                    };
                    *sheet_index = row;
                    if row == crate::worker_route_editor::ROUTE_PICKER_DONE_ROW {
                        if picked.is_empty() {
                            log = Some(
                                "Route: pick at least one node (Space toggles, Done confirms)"
                                    .into(),
                            );
                        } else {
                            let ids: Vec<String> = picked.iter().cloned().collect();
                            let added = ed.confirm_harvest_picks(&ids);
                            log = Some(format!("Route: + {added} harvest stop(s)"));
                        }
                    } else if let Some(n) = nodes.get(row.saturating_sub(1)) {
                        if picked.contains(&n.id) {
                            picked.remove(&n.id);
                        } else {
                            picked.insert(n.id.clone());
                        }
                    }
                }
                if let Some(msg) = log {
                    self.state.push_log(msg);
                }
            }
            S::WithdrawContainers { .. } => {
                let containers = self.re_container_candidates();
                if let Some(c) = containers.get(row) {
                    let id = c.id.clone();
                    self.re_open_withdraw_items(id);
                }
            }
            S::WithdrawItems { .. } => self.re_withdraw_items_activate(row),
            S::DepositContainers { .. } => {
                let containers = self.re_container_candidates();
                if let Some(c) = containers.get(row) {
                    let id = c.id.clone();
                    self.re_open_deposit_filter(id);
                }
            }
            S::DepositFilter { .. } => self.re_deposit_filter_activate(row),
            S::SellNpcs { .. } => {
                let npcs = self.re_npc_candidates();
                let npc_id = if row == 0 {
                    None
                } else {
                    npcs.get(row - 1).map(|n| n.id.clone())
                };
                if row == 0 || npc_id.is_some() {
                    self.re_open_sell_item(npc_id);
                }
            }
            S::SellItem { .. } => self.re_sell_item_activate(row),
            S::CraftBlueprint { .. } => {
                let bps = self.re_blueprint_ids();
                if let Some(bp) = bps.get(row) {
                    let stop = WorkerRouteStop::CraftAt {
                        device: "hand".into(),
                        blueprint: bp.clone(),
                        qty: None,
                    };
                    self.re_confirm_stop(stop, format!("craft {bp} (hand)"));
                }
            }
            S::WaitEntry { ticks } => {
                let stop = WorkerRouteStop::Wait {
                    wait_ticks: ticks,
                };
                self.re_confirm_stop(stop, format!("wait {ticks}t"));
            }
            S::BedPicker { .. } => {
                let beds = self.re_bed_candidates();
                if let Some((id, name)) = beds.get(row) {
                    let (id, name) = (id.clone(), name.clone());
                    if let Some(ed) = self.state.worker_route_editor.as_mut() {
                        ed.lodging_container_id = Some(id.clone());
                        ed.sheet = S::Stops;
                    }
                    self.state
                        .push_log(format!("Route: rest bed set to {name}"));
                }
            }
            S::FarmPlotPicker { action, .. } => {
                let plots = self.re_farm_plot_candidates();
                let Some(plot) = plots.get(row).cloned() else {
                    return;
                };
                match action {
                    crate::worker_route_editor::FarmPlotAction::Cultivate => {
                        let label = plot_route_label(&plot);
                        self.re_confirm_stop(
                            WorkerRouteStop::CultivatePlot {
                                plot_id: plot.plot_id,
                            },
                            format!("cultivate {label}"),
                        );
                    }
                    crate::worker_route_editor::FarmPlotAction::Harvest => {
                        let label = plot_route_label(&plot);
                        self.re_confirm_stop(
                            WorkerRouteStop::HarvestPlot {
                                plot_id: plot.plot_id,
                            },
                            format!("harvest {label}"),
                        );
                    }
                    crate::worker_route_editor::FarmPlotAction::Plant => {
                        let seeds = self.re_farm_seed_candidates();
                        if seeds.is_empty() {
                            self.state.push_log(
                                "Route: no seed templates known — check content or add a withdraw of potato_seed / carrot_seed",
                            );
                            return;
                        }
                        self.re_open_sheet(S::FarmPlantSeed {
                            plot_id: plot.plot_id,
                            seeds,
                            index: 0,
                        });
                    }
                }
            }
            S::FarmPlantSeed { plot_id, seeds, .. } => {
                if let Some(seed) = seeds.get(row).cloned() {
                    self.re_confirm_stop(
                        WorkerRouteStop::PlantPlot {
                            plot_id,
                            seed_template: seed.clone(),
                        },
                        format!("plant {seed}"),
                    );
                }
            }
            S::WaypointMapPick => {}
        }
    }

    fn re_open_farm_plot_picker(&mut self, action: crate::worker_route_editor::FarmPlotAction) {
        use crate::worker_route_editor::RouteEditorSheet as S;
        if self.re_farm_plot_candidates().is_empty() {
            self.state.push_log(
                "Route: no farmable plots visible — claim land or get farm access first",
            );
            return;
        }
        self.re_open_sheet(S::FarmPlotPicker { index: 0, action });
    }

    fn re_farm_plot_candidates(&self) -> Vec<flatland_protocol::PropertyPlotView> {
        self.state
            .property_plots
            .iter()
            .filter(|p| p.is_mine || p.may_farm)
            .cloned()
            .collect()
    }

    /// Seed templates for a plant-plot route stop — does **not** require seeds on the
    /// player. Unions inventory, owned storage, withdraw lines already in the draft,
    /// and known crop seeds so routes can withdraw-then-plant.
    fn re_farm_seed_candidates(&self) -> Vec<String> {
        let mut set = std::collections::BTreeSet::new();
        let looks_like_seed = |id: &str| {
            id.ends_with("_seed") || id == "potato_seed" || id == "carrot_seed"
        };
        for (id, _, _) in self.state.farm_seed_entries() {
            set.insert(id);
        }
        for c in &self.state.placed_containers {
            let mine = match (self.state.character_id, c.owner_character_id) {
                (Some(a), Some(b)) => a == b,
                _ => false,
            };
            if !mine {
                continue;
            }
            for s in &c.contents {
                if s.quantity > 0
                    && (s.props.contains_key("seed_for") || looks_like_seed(&s.template_id))
                {
                    set.insert(s.template_id.clone());
                }
            }
        }
        if let Some(ed) = self.state.worker_route_editor.as_ref() {
            for stop in &ed.stops {
                if let crate::worker_route_editor::WorkerRouteStop::WithdrawFrom { items, .. } = stop
                {
                    for it in items {
                        if looks_like_seed(&it.template) {
                            set.insert(it.template.clone());
                        }
                    }
                }
                if let crate::worker_route_editor::WorkerRouteStop::PlantPlot {
                    seed_template, ..
                } = stop
                {
                    if !seed_template.is_empty() {
                        set.insert(seed_template.clone());
                    }
                }
            }
        }
        for id in self.state.inventory_hints.keys() {
            if looks_like_seed(id) {
                set.insert(id.clone());
            }
        }
        // Authored crop seeds (always offer so withdraw-then-plant routes work).
        for id in ["potato_seed", "carrot_seed"] {
            set.insert(id.to_string());
        }
        set.into_iter().collect()
    }

    // ---- map clicks (sheet-scoped accelerators) ------------------------

    /// Map click while the route editor is open. When a picker sheet is open
    /// the click feeds *that* sheet (chest clicks choose the withdraw/deposit
    /// container, NPC clicks the merchant, node clicks the harvest target);
    /// otherwise the click quick-adds the nearest target (context-aware).
    pub fn worker_route_editor_map_click(&mut self, x: f32, y: f32) {
        use crate::worker_route_editor as wre;
        use wre::RouteEditorSheet as S;
        if self.state.worker_route_editor.is_none() {
            return;
        }
        let sheet = self
            .state
            .worker_route_editor
            .as_ref()
            .map(|ed| ed.sheet.clone())
            .unwrap_or(S::Stops);
        match sheet {
            S::WaypointMapPick => {
                let (_, _, z) = self.state.player_position_with_z();
                let stop = wre::WorkerRouteStop::Waypoint { x, y, z };
                self.re_confirm_stop(stop, format!("waypoint ({x:.0}, {y:.0})"));
                // Stay in map-pick mode when adding (not editing) for fast pathing.
                let editing = self
                    .state
                    .worker_route_editor
                    .as_ref()
                    .is_some_and(|ed| ed.editing_index.is_some());
                if !editing {
                    if let Some(ed) = self.state.worker_route_editor.as_mut() {
                        ed.sheet = S::WaypointMapPick;
                    }
                }
            }
            S::HarvestPicker { .. } => {
                if let Some(node) = wre::pick_resource_node_at(&self.state.resource_nodes, x, y) {
                    let mut log: Option<String> = None;
                    if let Some(ed) = self.state.worker_route_editor.as_mut() {
                        let S::HarvestPicker { picked, .. } = &mut ed.sheet else {
                            return;
                        };
                        let selected = if picked.contains(&node.id) {
                            picked.remove(&node.id);
                            false
                        } else {
                            picked.insert(node.id.clone());
                            true
                        };
                        log = Some(format!(
                            "Route: {} {}",
                            if selected { "selected" } else { "deselected" },
                            node.label
                        ));
                    }
                    if let Some(msg) = log {
                        self.state.push_log(msg);
                    }
                }
            }
            S::WithdrawContainers { .. } | S::WithdrawItems { .. } => {
                // Chest click picks (or switches) the withdraw source.
                if let Some(cid) = wre::pick_storage_container_at(
                    &self.state.placed_containers,
                    self.state.character_id,
                    x,
                    y,
                ) {
                    self.re_open_withdraw_items(cid);
                }
            }
            S::DepositContainers { .. } | S::DepositFilter { .. } => {
                if let Some(cid) = wre::pick_storage_container_at(
                    &self.state.placed_containers,
                    self.state.character_id,
                    x,
                    y,
                ) {
                    self.re_open_deposit_filter(cid);
                }
            }
            S::SellNpcs { .. } => {
                if let Some((npc_id, _)) = wre::pick_trade_npc_at(&self.state.npcs, x, y) {
                    self.re_open_sell_item(Some(npc_id));
                }
            }
            S::SellItem { .. } => {
                if let Some((npc_id, label)) = wre::pick_trade_npc_at(&self.state.npcs, x, y) {
                    if let Some(ed) = self.state.worker_route_editor.as_mut() {
                        if let S::SellItem { npc_id: slot, .. } = &mut ed.sheet {
                            *slot = Some(npc_id.clone());
                        }
                    }
                    self.state
                        .push_log(format!("Route: sell NPC → {label} ({npc_id})"));
                }
            }
            // Stop list / other sheets: context-aware quick add.
            _ => self.worker_route_editor_quick_add_click(x, y),
        }
    }

    /// Quick-add map click with no picker open: nearest of bed/chest/merchant/
    /// node wins; duplicates select the existing stop; a click on a merchant
    /// while a sell stop is selected pins it.
    fn worker_route_editor_quick_add_click(&mut self, x: f32, y: f32) {
        use crate::worker_route_editor as wre;
        let dist = |ax: f32, ay: f32, bx: f32, by: f32| {
            let dx = ax - bx;
            let dy = ay - by;
            (dx * dx + dy * dy).sqrt()
        };

        // 1. Retarget the selected stop when the click names its target:
        //    sell stop → pin the merchant; withdraw stop → set the source chest.
        let selected_stop_kind = self
            .state
            .worker_route_editor
            .as_ref()
            .and_then(|ed| ed.stops.get(ed.selected_stop_index))
            .map(|s| match s {
                wre::WorkerRouteStop::TradeWith { .. } => 1,
                wre::WorkerRouteStop::WithdrawFrom { .. } => 2,
                _ => 0,
            })
            .unwrap_or(0);
        if selected_stop_kind == 1 {
            if let Some((npc_id, label)) = wre::pick_trade_npc_at(&self.state.npcs, x, y) {
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    ed.set_selected_trade_npc(npc_id.clone());
                }
                self.state
                    .push_log(format!("Route: sell NPC → {label} ({npc_id})"));
                return;
            }
        }
        if selected_stop_kind == 2 {
            if let Some(cid) = wre::pick_storage_container_at(
                &self.state.placed_containers,
                self.state.character_id,
                x,
                y,
            ) {
                let name = self
                    .state
                    .placed_containers
                    .iter()
                    .find(|c| c.id == cid)
                    .map(|c| c.display_name.clone())
                    .unwrap_or_else(|| "container".into());
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    ed.set_selected_withdraw_container(cid.clone());
                }
                self.state
                    .push_log(format!("Route: withdraw source → {name}"));
                return;
            }
        }

        // 2. Nearest candidate of any kind wins. Category order is the
        //    tie-break for exact overlaps (bed over chest over merchant over node).
        enum Target {
            Bed(String),
            Container(String),
            Npc(String, String),
            Node(String, String),
        }
        let mut best: Option<(f32, u8, Target)> = None;
        let consider = |d: f32, rank: u8, t: Target, best: &mut Option<(f32, u8, Target)>| {
            let better = match best {
                None => true,
                Some((bd, brank, _)) => d < *bd - f32::EPSILON || ((d - *bd).abs() <= f32::EPSILON && rank < *brank),
            };
            if better {
                *best = Some((d, rank, t));
            }
        };
        if let Some(bed_id) = wre::pick_lodging_container_at(
            &self.state.placed_containers,
            self.state.character_id,
            x,
            y,
        ) {
            if let Some(c) = self.state.placed_containers.iter().find(|c| c.id == bed_id) {
                // A bed that's already the rest bed doubles as a storage chest —
                // a second click on it means "deposit here", not "set bed again".
                let already_bed = self
                    .state
                    .worker_route_editor
                    .as_ref()
                    .is_some_and(|ed| ed.lodging_container_id.as_deref() == Some(bed_id.as_str()));
                if already_bed {
                    consider(dist(x, y, c.x, c.y), 1, Target::Container(bed_id), &mut best);
                } else {
                    consider(dist(x, y, c.x, c.y), 0, Target::Bed(bed_id), &mut best);
                }
            }
        }
        if let Some(cid) = wre::pick_storage_container_at(
            &self.state.placed_containers,
            self.state.character_id,
            x,
            y,
        ) {
            if let Some(c) = self.state.placed_containers.iter().find(|c| c.id == cid) {
                consider(dist(x, y, c.x, c.y), 1, Target::Container(cid), &mut best);
            }
        }
        if let Some((npc_id, label)) = wre::pick_trade_npc_at(&self.state.npcs, x, y) {
            if let Some(n) = self.state.npcs.iter().find(|n| n.id == npc_id) {
                consider(
                    dist(x, y, n.x, n.y),
                    2,
                    Target::Npc(npc_id, label),
                    &mut best,
                );
            }
        }
        if let Some(node) = wre::pick_resource_node_at(&self.state.resource_nodes, x, y) {
            let d = dist(x, y, node.x, node.y);
            consider(
                d,
                3,
                Target::Node(node.id.clone(), node.label.clone()),
                &mut best,
            );
        }

        match best.map(|(_, _, t)| t) {
            Some(Target::Bed(bed_id)) => {
                let name = self
                    .state
                    .placed_containers
                    .iter()
                    .find(|c| c.id == bed_id)
                    .map(|c| c.display_name.clone())
                    .unwrap_or_else(|| "camp bed".into());
                if let Some(ed) = self.state.worker_route_editor.as_mut() {
                    ed.lodging_container_id = Some(bed_id.clone());
                }
                self.state
                    .push_log(format!("Route: rest bed set to {name} ({bed_id})"));
            }
            Some(Target::Container(cid)) => {
                let name = self
                    .state
                    .placed_containers
                    .iter()
                    .find(|c| c.id == cid)
                    .map(|c| c.display_name.clone())
                    .unwrap_or_else(|| "container".into());
                let added = self
                    .state
                    .worker_route_editor
                    .as_mut()
                    .is_some_and(|ed| ed.append_deposit_at(&cid));
                if added {
                    self.state
                        .push_log(format!("Route: + deposit at {name} ({cid})"));
                } else {
                    self.state.push_log(format!(
                        "Route: {name} already in route — selected it (d to remove)"
                    ));
                }
            }
            Some(Target::Npc(npc_id, label)) => {
                // Quick-add sell: first storage template (the full sell flow
                // lives in the a → Sell sheet).
                let template = self.re_template_candidates().into_iter().next();
                let Some(template) = template else {
                    self.state.push_log("Route: no items in your storage to sell — stock a chest first".to_string());
                    return;
                };
                let added = self
                    .state
                    .worker_route_editor
                    .as_mut()
                    .is_some_and(|ed| ed.append_trade_with(template.clone(), Some(npc_id.clone()), true));
                if added {
                    self.state
                        .push_log(format!("Route: + sell {template} to {label} ({npc_id})"));
                } else {
                    self.state.push_log(format!(
                        "Route: {label} already sells {template} — selected it (d to remove)"
                    ));
                }
            }
            Some(Target::Node(id, label)) => {
                let added = self
                    .state
                    .worker_route_editor
                    .as_mut()
                    .is_some_and(|ed| ed.append_harvest_node(&id));
                if added {
                    self.state
                        .push_log(format!("Route: + harvest node {label} ({id})"));
                } else {
                    self.state.push_log(format!(
                        "Route: {label} already in route — selected it (d to remove)"
                    ));
                }
            }
            None => {}
        }
    }

    pub fn worker_route_editor_select(&mut self, delta: i32) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if ed.stops.is_empty() {
            return;
        }
        let n = ed.stops.len() as i32;
        let next = (ed.selected_stop_index as i32 + delta).rem_euclid(n) as usize;
        ed.selected_stop_index = next;
    }

    pub fn worker_route_editor_move_selected(&mut self, delta: i32) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if delta < 0 {
            ed.move_selected_up();
        } else if delta > 0 {
            ed.move_selected_down();
        }
    }

    pub fn worker_route_editor_delete_selected(&mut self) {
        let removed = self
            .state
            .worker_route_editor
            .as_mut()
            .is_some_and(|ed| {
                let before = ed.stop_count();
                ed.remove_selected_stop();
                ed.stop_count() < before
            });
        if removed {
            self.state.push_log("Route: removed selected stop");
        }
    }

    /// Clear all stops. Saving afterwards parks the worker in idle mode
    /// instead of leaving it in a broken job loop.
    pub fn worker_route_editor_clear_stops(&mut self) {
        let Some(ed) = self.state.worker_route_editor.as_mut() else {
            return;
        };
        if ed.stops.is_empty() {
            self.state.push_log("Route: already empty — s saves an idle worker".to_string());
            return;
        }
        ed.stops.clear();
        ed.selected_stop_index = 0;
        self.state
            .push_log("Route: cleared all stops — s saves (worker goes idle) · Esc cancels".to_string());
    }

    pub async fn worker_route_editor_save(&mut self) -> anyhow::Result<()> {
        if self.state.pending_worker_job_ack.is_some() {
            anyhow::bail!("route save still pending — wait for server ack");
        }
        let Some(ed) = self.state.worker_route_editor.clone() else {
            anyhow::bail!("route editor not open");
        };
        // Empty route = stand down: park the worker in idle mode rather than
        // erroring out or leaving it marching a ghost loop.
        let (job_yaml, idle) = if ed.stops.is_empty() {
            (ed.build_idle_job_yaml(), true)
        } else {
            (ed.build_job_yaml().map_err(|e| anyhow::anyhow!(e))?, false)
        };
        let worker_id = ed.worker_instance_id.clone();
        let route_view = if idle {
            None
        } else {
            Some(ed.to_route_view())
        };
        let mode = if idle {
            flatland_protocol::WorkerModeView::Idle
        } else {
            flatland_protocol::WorkerModeView::JobLoop
        };
        let (prev_route, prev_mode, prev_step_label, prev_last_error) = self
            .state
            .hired_workers
            .iter()
            .find(|w| w.instance_id == worker_id)
            .map(|w| {
                (
                    w.route.clone(),
                    w.mode,
                    w.step_label.clone(),
                    w.last_error.clone(),
                )
            })
            .unwrap_or((
                None,
                flatland_protocol::WorkerModeView::Idle,
                String::new(),
                None,
            ));
        self.seq += 1;
        let seq = self.seq;
        self.session
            .submit_intent(Intent::SetWorkerJob {
                entity_id: self.state.entity_id,
                worker_instance_id: worker_id.clone(),
                job_yaml,
                seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if let Some(w) = self
            .state
            .hired_workers
            .iter_mut()
            .find(|w| w.instance_id == worker_id)
        {
            w.route = route_view;
            w.mode = mode;
            w.last_error = None;
            if idle {
                w.step_label.clear();
                w.route_stop_index = None;
            }
        }
        self.state.pending_worker_job_ack = Some(PendingWorkerJobAck {
            seq,
            worker_instance_id: worker_id,
            worker_label: ed.worker_label.clone(),
            idle,
            stop_count: ed.stops.len(),
            prev_route,
            prev_mode,
            prev_step_label,
            prev_last_error,
        });
        self.state.push_log(format!(
            "Route: saving for {}… (waiting for server)",
            ed.worker_label
        ));
        // Keep editor open until IntentAck; reject Interaction reverts optimistic state.
        Ok(())
    }
    pub fn quest_menu_move(&mut self, delta: i32) {
        let n = self.state.active_quest_entries().len();
        if n == 0 {
            return;
        }
        let idx = self.state.quest_menu_index as i32;
        self.state.quest_menu_index = (idx + delta).rem_euclid(n as i32) as usize;
    }

    pub fn quest_menu_page(&mut self, pages: i32) {
        let n = self.state.active_quest_entries().len();
        self.state.quest_menu_index = page_list_index(self.state.quest_menu_index, pages, n);
    }

    pub async fn quest_offer_accept(&mut self) -> anyhow::Result<()> {
        let Some(offer) = self.state.pending_quest_offer.clone() else {
            anyhow::bail!("no quest offer");
        };
        self.seq += 1;
        let seq = self.seq;
        self.session
            .submit_intent(Intent::AcceptQuest {
                entity_id: self.state.entity_id,
                quest_id: offer.quest_id,
                seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn quest_offer_decline(&mut self) {
        self.state.show_quest_offer = false;
        self.state.pending_quest_offer = None;
        if !self.state.show_npc_chat
            && !self.state.show_shop_menu
            && self.state.npc_verb_target.is_some()
        {
            self.state.show_npc_verb_menu = true;
        }
    }

    pub async fn quest_confirm_action(&mut self) -> anyhow::Result<()> {
        if !self.state.show_quest_menu {
            return Ok(());
        }
        let active: Vec<_> = self
            .state
            .active_quest_entries()
            .into_iter()
            .cloned()
            .collect();
        let Some(entry) = active.get(self.state.quest_menu_index) else {
            return Ok(());
        };
        if self.state.quest_withdraw_confirm {
            if !entry.can_withdraw {
                anyhow::bail!("quest cannot be withdrawn");
            }
            self.seq += 1;
            let seq = self.seq;
            self.session
                .submit_intent(Intent::WithdrawQuest {
                    entity_id: self.state.entity_id,
                    quest_id: entry.quest_id.clone(),
                    seq,
                })
                .await?;
            self.state.intents_sent += 1;
            self.state.quest_withdraw_confirm = false;
            return Ok(());
        }
        self.seq += 1;
        let seq = self.seq;
        self.session
            .submit_intent(Intent::TrackQuest {
                entity_id: self.state.entity_id,
                quest_id: entry.quest_id.clone(),
                seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn quest_request_withdraw(&mut self) {
        if self.state.show_quest_menu {
            self.state.quest_withdraw_confirm = true;
        }
    }

    pub async fn shop_confirm(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let Some(catalog) = self.state.shop_catalog.clone() else {
            anyhow::bail!("no shop open");
        };
        self.seq += 1;
        let seq = self.seq;
        match self.state.shop_tab {
            ShopTab::Buy => {
                let Some(offer) = catalog.sells.get(self.state.shop_menu_index) else {
                    anyhow::bail!("nothing selected");
                };
                if offer.already_owned {
                    anyhow::bail!("already owned");
                }
                self.session
                    .submit_intent(Intent::ShopBuy {
                        entity_id: self.state.entity_id,
                        npc_id: catalog.npc_id.clone(),
                        offer_id: offer.offer_id.clone(),
                        quantity: self.state.shop_quantity,
                        seq,
                    })
                    .await?;
            }
            ShopTab::Sell => {
                let Some(line) = catalog.buys.get(self.state.shop_menu_index) else {
                    anyhow::bail!("nothing to sell");
                };
                if line.quantity == 0 {
                    anyhow::bail!("you have no {}", line.label);
                }
                let quantity = self.state.shop_quantity.min(line.quantity).max(1);
                self.session
                    .submit_intent(Intent::ShopSell {
                        entity_id: self.state.entity_id,
                        npc_id: catalog.npc_id.clone(),
                        template_id: line.template_id.clone(),
                        quantity,
                        seq,
                    })
                    .await?;
            }
        }
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn craft_menu_move(&mut self, delta: i32) {
        let n = self.state.blueprints.len();
        if n == 0 {
            return;
        }
        let idx = self.state.craft_menu_index as i32;
        let next = (idx + delta).rem_euclid(n as i32);
        self.state.craft_menu_index = next as usize;
        self.state.clamp_craft_batch_quantity();
    }

    pub fn craft_batch_adjust_quantity(&mut self, delta: i32) {
        self.state.craft_batch_adjust_quantity(delta);
    }

    pub fn craft_batch_set_max(&mut self) {
        self.state.craft_batch_set_max();
    }

    pub fn craft_batch_set_min(&mut self) {
        self.state.craft_batch_set_min();
    }

    pub async fn craft_menu_selection(&mut self) -> anyhow::Result<()> {
        let Some(blueprint) = self
            .state
            .blueprints
            .get(self.state.craft_menu_index)
            .cloned()
        else {
            anyhow::bail!("no blueprints known");
        };
        if !self.state.can_craft_blueprint(&blueprint) {
            let hint = self
                .state
                .craft_missing_hint(&blueprint)
                .unwrap_or_else(|| "missing materials".into());
            anyhow::bail!("cannot craft {}: {hint}", blueprint.label);
        }
        let count = self.state.craft_batch_quantity;
        let max = self.state.max_craft_batches(&blueprint);
        if max == 0 {
            anyhow::bail!("cannot craft {}", blueprint.label);
        }
        let batches = count.min(max);
        self.craft(&blueprint.id, Some(batches)).await?;
        self.state.show_craft_menu = false;
        Ok(())
    }

    pub async fn move_by(
        &mut self,
        forward: f32,
        strafe: f32,
        vertical: f32,
        sprint: bool,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        if forward.abs() > f32::EPSILON || strafe.abs() > f32::EPSILON {
            self.last_move_forward = forward;
            self.last_move_strafe = strafe;
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Move {
                entity_id: self.state.entity_id,
                forward,
                strafe,
                vertical,
                sprint,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn harvest_nearest(&mut self) -> anyhow::Result<()> {
        if !self.state.connected {
            crate::harvest_trace!("harvest_nearest rejected: not connected");
            anyhow::bail!("not connected");
        }
        if !self.state.is_alive() {
            crate::harvest_trace!("harvest_nearest rejected: player dead");
            anyhow::bail!("you are dead");
        }
        if self.state.harvest_in_progress {
            if self.state.harvest_state_stale() {
                self.state.clear_harvest_state();
            } else {
                anyhow::bail!("already harvesting");
            }
        }
        let (px, py) = self
            .state
            .player
            .as_ref()
            .map(|p| (p.transform.position.x, p.transform.position.y))
            .unwrap_or((0.0, 0.0));

        let available = self
            .state
            .resource_nodes
            .iter()
            .filter(|n| !n.harvest_off)
            .filter(|n| n.state == flatland_protocol::ResourceNodeState::Available)
            .count();
        let node_id = self
            .state
            .resource_nodes
            .iter()
            .filter(|n| !n.harvest_off)
            .filter(|n| n.state == flatland_protocol::ResourceNodeState::Available)
            .filter(|n| distance(px, py, n.x, n.y) <= HARVEST_RANGE_M)
            .min_by(|a, b| {
                let da = distance(px, py, a.x, a.y);
                let db = distance(px, py, b.x, b.y);
                da.partial_cmp(&db).unwrap_or(std::cmp::Ordering::Equal)
            })
            .map(|n| n.id.clone());

        let Some(node_id) = node_id else {
            let has_loot = self
                .state
                .ground_drops
                .iter()
                .any(|d| distance(px, py, d.x, d.y) <= INTERACTION_RADIUS_M);
            if has_loot {
                return self.pickup_nearest().await;
            }
            anyhow::bail!(
                "no harvestable nodes within {HARVEST_RANGE_M}m — stand on * loot and press f to pick up"
            );
        };

        self.seq += 1;
        let seq = self.seq;
        crate::harvest_trace!(
            entity_id = self.state.entity_id,
            node_id = %node_id,
            seq,
            px,
            py,
            available_nodes = available,
            "submitting harvest intent"
        );
        self.session
            .submit_intent(Intent::Harvest {
                entity_id: self.state.entity_id,
                node_id,
                seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.harvest_in_progress = true;
        self.state.harvest_started_at = Some(Instant::now());
        self.state.push_log("Harvesting…");
        crate::harvest_trace!(
            entity_id = self.state.entity_id,
            seq,
            "harvest intent queued to session"
        );
        Ok(())
    }

    pub async fn craft_next_available(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let blueprint_id = self
            .state
            .blueprints
            .iter()
            .find(|bp| self.state.can_craft_blueprint(bp))
            .map(|bp| bp.id.clone())
            .ok_or_else(|| anyhow::anyhow!("no craftable blueprint (need materials)"))?;
        self.craft(&blueprint_id, None).await
    }

    pub async fn craft(&mut self, blueprint_id: &str, count: Option<u32>) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Craft {
                entity_id: self.state.entity_id,
                blueprint_id: blueprint_id.to_string(),
                count,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        let (label, batches) = self
            .state
            .blueprints
            .iter()
            .find(|b| b.id == blueprint_id)
            .map(|b| {
                let n = count.unwrap_or_else(|| self.state.max_craft_batches(b).max(1));
                (b.label.as_str(), n)
            })
            .unwrap_or((blueprint_id, count.unwrap_or(1)));
        self.state.pending_craft_ack = Some((self.seq, label.to_string(), batches));
        Ok(())
    }

    pub async fn interact_nearest(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let target_id = match self.state.nearest_interact_target() {
            Some(id) => id,
            None => {
                anyhow::bail!("nothing to interact with nearby");
            }
        };
        if self.state.npcs.iter().any(|n| n.id == target_id) {
            self.state.show_npc_verb_menu = true;
            self.state.npc_verb_target = Some(target_id);
            self.state.npc_verb_index = 0;
            return Ok(());
        }
        if self
            .state
            .hired_workers
            .iter()
            .any(|w| w.instance_id == target_id)
        {
            return self.open_workers_menu_for(&target_id).await;
        }
        if let Ok(peer_id) = target_id.parse::<EntityId>() {
            if self
                .state
                .hired_workers
                .iter()
                .any(|w| w.entity_id == peer_id)
            {
                if let Some(w) = self
                    .state
                    .hired_workers
                    .iter()
                    .find(|w| w.entity_id == peer_id)
                {
                    let id = w.instance_id.clone();
                    return self.open_workers_menu_for(&id).await;
                }
            }
            if let Some(entity) = self
                .state
                .entities
                .iter()
                .find(|e| e.id == peer_id && e.id != self.state.entity_id)
            {
                self.state
                    .player_verbs
                    .open_for(peer_id, &entity.label);
                return Ok(());
            }
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Interact {
                entity_id: self.state.entity_id,
                target_id: target_id.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Context-sensitive world use: loot/chest → plot farm → interact → claim → harvest.
    pub async fn use_nearest(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let (px, py) = self.state.player_position();
        let has_loot = self
            .state
            .ground_drops
            .iter()
            .any(|d| distance(px, py, d.x, d.y) <= INTERACTION_RADIUS_M);
        if has_loot {
            return self.pickup_nearest().await;
        }
        if self
            .state
            .placed_containers
            .iter()
            .any(|c| (c.x - px).hypot(c.y - py) <= 2.0)
        {
            return self.pickup_nearest_container().await;
        }

        if let Some(plot) = self.state.my_plot_under_player().cloned() {
            // Double-tap f within 1.2s sells; otherwise farm the plot.
            const SELL_WINDOW: Duration = Duration::from_millis(1200);
            let sell_armed = self.state.sell_plot_confirm == Some(plot.plot_id)
                && self
                    .state
                    .sell_plot_armed_at
                    .is_some_and(|t| t.elapsed() <= SELL_WINDOW);
            if sell_armed {
                return self.confirm_sell_plot_to_crown(plot.plot_id).await;
            }
            self.state.sell_plot_confirm = None;
            self.state.sell_plot_armed_at = None;

            // Prefer farm actions on your own land unless an NPC/player/door/board
            // is in interact range (those still win).
            let blocking_interact = self.state.nearest_interact_target().is_some_and(|id| {
                self.state.npcs.iter().any(|n| n.id == id)
                    || self.state.hired_workers.iter().any(|w| w.instance_id == id)
                    || self.state.doors.iter().any(|d| d.id == id)
                    || self.state.interactables.iter().any(|i| {
                        i.id == id
                            && matches!(
                                i.kind.as_str(),
                                "quest_board" | "well" | "exit" | "enter"
                            )
                    })
                    || id.parse::<EntityId>().is_ok_and(|eid| {
                        self.state
                            .entities
                            .iter()
                            .any(|e| e.id == eid && e.id != self.state.entity_id)
                    })
            });
            if !blocking_interact {
                // On your plot, `f` is harvest only — use `c` / `p` for till and plant.
                match self.harvest_nearest().await {
                    Ok(()) => return Ok(()),
                    Err(err) => {
                        let msg = err.to_string();
                        if !(msg.contains("no harvestable")
                            || msg.contains("press p")
                            || msg.contains("press f")
                            || msg.contains("nothing"))
                        {
                            return Err(err);
                        }
                    }
                }
                return Ok(());
            }
        }
        if self.state.nearest_interact_target().is_some() {
            return self.interact_nearest().await;
        }
        // Prefer a clear "move closer" when a board is visible but out of reach,
        // instead of silently falling through to harvest.
        if let Some((label, dist)) = self.state.nearest_quest_board() {
            if dist > QUEST_BOARD_INTERACTION_RADIUS_M && dist <= NEARBY_SCAN_M {
                anyhow::bail!(
                    "too far from {label} ({dist:.1}m) — move within {QUEST_BOARD_INTERACTION_RADIUS_M}m and press f"
                );
            }
        }

        match self.harvest_nearest().await {
            Ok(()) => Ok(()),
            Err(err) => {
                let msg = err.to_string();
                if msg.contains("no harvestable")
                    || msg.contains("press p")
                    || msg.contains("press f")
                {
                    anyhow::bail!(
                        "nothing to use nearby — stand by an NPC/door, loot (*), chest, resource, or press k on claimable land"
                    );
                }
                Err(err)
            }
        }
    }

    /// Enter claim-mode footprint editor on unclaimed crown land (`k`).
    pub async fn try_begin_claim_mode(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        if self.state.claim_mode.is_some() {
            anyhow::bail!("already in claim mode — Enter to buy, Esc to cancel");
        }
        let zone = self
            .state
            .free_property_zone_under_player()
            .ok_or_else(|| anyhow::anyhow!("stand on unclaimed crown land to buy a plot (k)"))?;
        let zone_id = zone.id.clone();
        let label = zone
            .label
            .as_deref()
            .filter(|s| !s.trim().is_empty())
            .unwrap_or(zone.id.as_str())
            .to_string();
        self.enter_claim_mode(&zone_id);
        self.state
            .push_log(format!(
                "Claim mode: {label} — WASD move · [ ] size · Enter buy · Esc cancel"
            ));
        Ok(())
    }

    /// Enter claim mode over a property zone (default 4×4 or min size).
    pub fn enter_claim_mode(&mut self, zone_id: &str) {
        let Some(zone) = self
            .state
            .property_zones
            .iter()
            .find(|z| z.id == zone_id)
            .cloned()
        else {
            self.state.push_log("unknown property zone");
            return;
        };
        self.state.sell_plot_confirm = None;
        self.state.sell_plot_armed_at = None;
        let min_area = self
            .state
            .property_plot_settings
            .as_ref()
            .map(|s| s.min_plot_area_m2)
            .unwrap_or(4.0)
            .max(1.0);
        let min_side = min_area.sqrt().ceil().max(1.0) as u32;
        let side = 4u32.max(min_side);
        let (px, py) = self.state.player_position();
        let anchor_x = px.floor();
        let anchor_y = py.floor();
        self.state.claim_mode = Some(ClaimModeState {
            zone_id: zone.id.clone(),
            width_m: side,
            height_m: side,
            anchor_x,
            anchor_y,
        });
        let label = zone
            .label
            .as_deref()
            .filter(|s| !s.trim().is_empty())
            .unwrap_or(zone.id.as_str());
        self.state.push_log(format!(
            "Claiming {label} — {side}×{side}m · WASD move · [ ] size · Enter buy · Esc cancel"
        ));
    }

    pub fn cancel_claim_mode(&mut self) {
        if self.state.claim_mode.take().is_some() {
            self.state.push_log("Claim cancelled");
        }
    }

    /// Enter relocate mode for a placed container (1×1 ghost).
    pub fn begin_relocate_container(&mut self, container_id: &str) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        if self.state.relocate_mode.is_some() {
            anyhow::bail!("already relocating — Enter confirm, Esc cancel");
        }
        if self.state.claim_mode.is_some() {
            anyhow::bail!("finish or cancel claim mode first");
        }
        let chest = self
            .state
            .placed_containers
            .iter()
            .find(|c| c.id == container_id)
            .cloned()
            .ok_or_else(|| anyhow::anyhow!("chest not found"))?;
        let (px, py) = self.state.player_position();
        if (chest.x - px).hypot(chest.y - py) > CONTAINER_RANGE_M {
            anyhow::bail!("too far from {}", chest.display_name);
        }
        if chest.locked && !chest.accessible {
            anyhow::bail!(
                "need the matching key for {} before moving it",
                chest.display_name
            );
        }
        let label = if chest.display_name.trim().is_empty() {
            chest.template_id.clone()
        } else {
            chest.display_name.clone()
        };
        self.state.relocate_mode = Some(RelocateModeState {
            container_id: chest.id.clone(),
            label: label.clone(),
            cursor_x: chest.x.floor() + 0.5,
            cursor_y: chest.y.floor() + 0.5,
        });
        self.state.push_log(format!(
            "Relocate {label} — WASD move square · Enter confirm · Esc cancel"
        ));
        Ok(())
    }

    /// World `Shift+m`: relocate nearest owned/accessible placed container.
    pub fn try_begin_relocate_nearest(&mut self) -> anyhow::Result<()> {
        let Some(chest) = self.state.nearest_placed_container(CONTAINER_RANGE_M) else {
            anyhow::bail!("no chest nearby to relocate");
        };
        if chest.locked && !chest.accessible {
            anyhow::bail!(
                "need the matching key for {} before moving it",
                chest.display_name
            );
        }
        // Prefer own chests: if owner is set and we're not the owner, skip unless accessible unlocked?
        // Server enforces ownership; client starts on nearest accessible chest in range.
        self.begin_relocate_container(&chest.id)
    }

    pub fn cancel_relocate_mode(&mut self) {
        if self.state.relocate_mode.take().is_some() {
            self.state.push_log("Relocate cancelled");
        }
    }

    pub fn relocate_nudge(&mut self, dx: i32, dy: i32) {
        let Some(mode) = self.state.relocate_mode.as_mut() else {
            return;
        };
        let max_x = self.state.world_width_m.max(1.0);
        let max_y = self.state.world_height_m.max(1.0);
        let nx = (mode.cursor_x + dx as f32).clamp(0.5, max_x - 0.5);
        let ny = (mode.cursor_y + dy as f32).clamp(0.5, max_y - 0.5);
        mode.cursor_x = nx.floor() + 0.5;
        mode.cursor_y = ny.floor() + 0.5;
    }

    pub fn relocate_set_cursor(&mut self, x: f32, y: f32) {
        let Some(mode) = self.state.relocate_mode.as_mut() else {
            return;
        };
        let max_x = self.state.world_width_m.max(1.0);
        let max_y = self.state.world_height_m.max(1.0);
        mode.cursor_x = x.floor().clamp(0.0, max_x - 1.0) + 0.5;
        mode.cursor_y = y.floor().clamp(0.0, max_y - 1.0) + 0.5;
    }

    pub async fn confirm_relocate_container(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let Some(mode) = self.state.relocate_mode.clone() else {
            anyhow::bail!("not relocating");
        };
        let (px, py) = self.state.player_position();
        let dist = (mode.cursor_x - px).hypot(mode.cursor_y - py);
        if dist > 8.0 {
            anyhow::bail!("destination too far (max 8 m)");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::MovePlacedContainer {
                entity_id: self.state.entity_id,
                container_id: mode.container_id.clone(),
                x: mode.cursor_x,
                y: mode.cursor_y,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.relocate_mode = None;
        self.state
            .push_log(format!("Moving {}…", mode.label));
        Ok(())
    }

    pub fn claim_set_preset(&mut self, w: u32, h: u32) {
        let Some(mode) = self.state.claim_mode.as_mut() else {
            return;
        };
        mode.width_m = w.max(1);
        mode.height_m = h.max(1);
    }

    pub fn claim_nudge(&mut self, dw: i32, dh: i32) {
        let Some(mode) = self.state.claim_mode.as_mut() else {
            return;
        };
        let w = (mode.width_m as i32 + dw).max(1) as u32;
        let h = (mode.height_m as i32 + dh).max(1) as u32;
        mode.width_m = w;
        mode.height_m = h;
    }

    /// Nudge the claim footprint SW corner one meter cell (WASD / arrows).
    pub fn claim_move_nudge(&mut self, dx: i32, dy: i32) {
        let Some(mode) = self.state.claim_mode.as_mut() else {
            return;
        };
        let max_x = self.state.world_width_m.max(1.0);
        let max_y = self.state.world_height_m.max(1.0);
        let nx = (mode.anchor_x + dx as f32).clamp(0.0, (max_x - 1.0).max(0.0));
        let ny = (mode.anchor_y + dy as f32).clamp(0.0, (max_y - 1.0).max(0.0));
        mode.anchor_x = nx.floor();
        mode.anchor_y = ny.floor();
    }

    pub async fn confirm_buy_plot(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let Some(mode) = self.state.claim_mode.clone() else {
            anyhow::bail!("not in claim mode");
        };
        let Some((purchase, _upkeep, _area, _prem, can_afford, valid, reason)) =
            self.state.claim_quote()
        else {
            anyhow::bail!("cannot quote claim");
        };
        if !valid {
            anyhow::bail!(reason);
        }
        if !can_afford {
            anyhow::bail!(
                "not enough copper (need {})",
                crate::currency::format_copper(purchase)
            );
        }
        let (x0, y0, x1, y1) = self
            .state
            .claim_footprint_rect()
            .ok_or_else(|| anyhow::anyhow!("no claim footprint"))?;
        let (x0, y0, x1, y1) = snap_claim_rect_client(x0, y0, x1, y1);
        self.seq += 1;
        self.session
            .submit_intent(Intent::BuyPlot {
                entity_id: self.state.entity_id,
                zone_id: mode.zone_id,
                x0,
                y0,
                x1,
                y1,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.claim_mode = None;
        self.state
            .push_log(format!("Buying plot for {}", crate::currency::format_copper(purchase)));
        Ok(())
    }

    pub async fn confirm_buy_plot_all_free(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let zone_id = self
            .state
            .claim_mode
            .as_ref()
            .map(|m| m.zone_id.clone())
            .or_else(|| {
                self.state
                    .free_property_zone_under_player()
                    .map(|z| z.id.clone())
            })
            .ok_or_else(|| anyhow::anyhow!("no free property zone"))?;
        self.seq += 1;
        self.session
            .submit_intent(Intent::BuyPlotAllFree {
                entity_id: self.state.entity_id,
                zone_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.claim_mode = None;
        self.state.push_log("Claiming largest free plot…");
        Ok(())
    }

    pub async fn confirm_sell_plot_to_crown(
        &mut self,
        plot_id: uuid::Uuid,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::SellPlotToCrown {
                entity_id: self.state.entity_id,
                plot_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.sell_plot_confirm = None;
        self.state.sell_plot_armed_at = None;
        self.state.push_log("Selling plot to the crown…");
        Ok(())
    }

    pub async fn set_plot_farm_public(
        &mut self,
        plot_id: uuid::Uuid,
        public: bool,
        public_tax_discount_bps: u32,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetPlotFarmPublic {
                entity_id: self.state.entity_id,
                plot_id,
                public,
                public_tax_discount_bps,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn plot_farm_allow_upsert(
        &mut self,
        plot_id: uuid::Uuid,
        character_id: Option<uuid::Uuid>,
        character_name: String,
        tax_discount_bps: u32,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::PlotFarmAllowUpsert {
                entity_id: self.state.entity_id,
                plot_id,
                character_id,
                character_name,
                tax_discount_bps,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn plot_farm_allow_remove(
        &mut self,
        plot_id: uuid::Uuid,
        character_id: uuid::Uuid,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::PlotFarmAllowRemove {
                entity_id: self.state.entity_id,
                plot_id,
                character_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn open_farm_access_panel(&mut self) {
        let Some(plot) = self.state.my_plot_under_player() else {
            self.state
                .push_log("Stand on your deed plot to manage farm access");
            return;
        };
        self.state.farm_access_discount_bps = plot.public_tax_discount_bps;
        self.state.farm_access_index = 0;
        self.state.show_farm_access = true;
    }

    pub fn close_farm_access_panel(&mut self) {
        self.state.show_farm_access = false;
        self.state.farm_access_name_draft.clear();
        self.state.farm_access_index = 0;
    }

    pub fn farm_access_move(&mut self, delta: i32) {
        let n = self.farm_access_row_count().max(1);
        let idx = self.state.farm_access_index as i32 + delta;
        self.state.farm_access_index = idx.rem_euclid(n as i32) as usize;
    }

    pub fn farm_access_rows(&self) -> Vec<FarmAccessRow> {
        let Some(plot) = self.state.my_plot_under_player() else {
            return vec![FarmAccessRow::PublicToggle];
        };
        let mut rows = vec![FarmAccessRow::PublicToggle, FarmAccessRow::PublicDiscount];
        for g in &plot.farm_allow {
            rows.push(FarmAccessRow::AllowRemove {
                character_id: g.character_id,
                label: if g.character_label.trim().is_empty() {
                    g.character_id.to_string()[..8].to_string()
                } else {
                    g.character_label.clone()
                },
                tax_discount_bps: g.tax_discount_bps,
            });
        }
        for e in &self.state.entities {
            if e.id == self.state.entity_id || e.label.trim().is_empty() {
                continue;
            }
            if self.state.hired_workers.iter().any(|w| w.entity_id == e.id) {
                continue;
            }
            if self
                .state
                .npcs
                .iter()
                .any(|n| n.id == e.label || n.label == e.label)
            {
                continue;
            }
            if plot
                .farm_allow
                .iter()
                .any(|g| !g.character_label.is_empty() && g.character_label == e.label)
            {
                continue;
            }
            rows.push(FarmAccessRow::NearbyAdd {
                name: e.label.clone(),
            });
        }
        rows
    }

    pub fn farm_access_row_count(&self) -> usize {
        self.farm_access_rows().len().max(1)
    }

    pub async fn farm_access_activate(&mut self) -> anyhow::Result<()> {
        let Some(plot) = self.state.my_plot_under_player().cloned() else {
            self.close_farm_access_panel();
            return Ok(());
        };
        let rows = self.farm_access_rows();
        let Some(row) = rows.get(self.state.farm_access_index) else {
            return Ok(());
        };
        match row {
            FarmAccessRow::PublicToggle => {
                self.set_plot_farm_public(
                    plot.plot_id,
                    !plot.farm_public,
                    plot.public_tax_discount_bps,
                )
                .await
            }
            FarmAccessRow::PublicDiscount => Ok(()),
            FarmAccessRow::AllowRemove { character_id, .. } => {
                self.plot_farm_allow_remove(plot.plot_id, *character_id)
                    .await
            }
            FarmAccessRow::NearbyAdd { name } => {
                let disc = self
                    .state
                    .farm_access_discount_bps
                    .max(plot.public_tax_discount_bps);
                self.plot_farm_allow_upsert(plot.plot_id, None, name.clone(), disc)
                    .await
            }
        }
    }

    pub async fn farm_access_adjust_discount(&mut self, delta_bps: i32) -> anyhow::Result<()> {
        let Some(plot) = self.state.my_plot_under_player().cloned() else {
            return Ok(());
        };
        let next = (plot.public_tax_discount_bps as i32 + delta_bps).clamp(0, 10_000) as u32;
        self.state.farm_access_discount_bps = next;
        self.state.farm_access_index = 1;
        self.set_plot_farm_public(plot.plot_id, plot.farm_public, next)
            .await
    }

    /// Till the cell under you on a farmable plot (`c`).
    pub async fn farm_cultivate_underfoot(&mut self) -> anyhow::Result<()> {
        if self.state.farmable_plot_under_player().is_none() {
            anyhow::bail!("stand on a farmable plot to cultivate");
        }
        let Some((tx, ty)) = self.state.cultivate_target_under_player() else {
            let (px, py) = self.state.player_position();
            if self
                .state
                .terrain_at(px, py)
                .is_some_and(|k| k == TerrainKindView::Tilled)
            {
                anyhow::bail!("already tilled — stand on bare soil and press c");
            }
            anyhow::bail!("cannot till this cell — move onto soil on your plot");
        };
        self.cultivate_at(tx, ty).await
    }

    /// Plant seeds on empty tilled soil under you (`p`).
    pub async fn farm_plant_underfoot(&mut self) -> anyhow::Result<()> {
        if self.state.farmable_plot_under_player().is_none() {
            anyhow::bail!("stand on a farmable plot to plant");
        }
        if !self.state.underfoot_free_tilled_plant_slot() {
            anyhow::bail!("stand on empty tilled soil and press p");
        }
        let seeds = self.state.farm_seed_entries();
        if seeds.is_empty() {
            anyhow::bail!("no seeds in inventory — buy seeds from Eli");
        }
        if seeds.len() == 1 {
            return self.plant_seeds(seeds[0].0.clone(), 1).await;
        }
        self.open_plant_menu();
        Ok(())
    }

    /// Open the wall/roof build picker on the owned plot underfoot (`B`).
    pub fn open_plot_build_menu(&mut self) -> anyhow::Result<()> {
        let Some(plot) = self.state.my_plot_under_player() else {
            anyhow::bail!("stand on your plot to build");
        };
        if plot.building_id.is_some() {
            anyhow::bail!("this plot already has a building");
        }
        let building_now = self
            .state
            .timed_channel
            .as_ref()
            .is_some_and(|c| c.channel == flatland_protocol::TimedChannelKind::Build);
        if !building_now && self.state.building_materials.is_empty() {
            anyhow::bail!("no building materials loaded — wait a moment and try again");
        }
        self.state.show_plot_build_menu = true;
        self.state.show_craft_menu = false;
        self.state.show_shop_menu = false;
        self.state.shop_catalog = None;
        self.state.show_stats = false;
        self.state.show_inventory_menu = false;
        self.state.plot_build_focus_wall = true;
        let walls = self.state.plot_build_wall_options().len();
        let roofs = self.state.plot_build_roof_options().len();
        if walls > 0 {
            self.state.plot_build_wall_index = self.state.plot_build_wall_index.min(walls - 1);
        } else {
            self.state.plot_build_wall_index = 0;
        }
        if roofs > 0 {
            self.state.plot_build_roof_index = self.state.plot_build_roof_index.min(roofs - 1);
        } else {
            self.state.plot_build_roof_index = 0;
        }
        Ok(())
    }

    pub fn close_plot_build_menu(&mut self) {
        self.state.show_plot_build_menu = false;
    }

    pub fn plot_build_menu_move(&mut self, delta: i32) {
        let walls = self.state.plot_build_wall_options();
        let roofs = self.state.plot_build_roof_options();
        if self.state.plot_build_focus_wall {
            if walls.is_empty() {
                return;
            }
            let n = walls.len() as i32;
            let cur = self.state.plot_build_wall_index as i32;
            self.state.plot_build_wall_index = ((cur + delta).rem_euclid(n)) as usize;
        } else {
            if roofs.is_empty() {
                return;
            }
            let n = roofs.len() as i32;
            let cur = self.state.plot_build_roof_index as i32;
            self.state.plot_build_roof_index = ((cur + delta).rem_euclid(n)) as usize;
        }
    }

    pub fn plot_build_menu_toggle_focus(&mut self) {
        self.state.plot_build_focus_wall = !self.state.plot_build_focus_wall;
    }

    /// Confirm selection from the B menu.
    pub async fn plot_build_menu_confirm(&mut self) -> anyhow::Result<()> {
        let wall = self
            .state
            .plot_build_selected_wall()
            .ok_or_else(|| anyhow::anyhow!("pick a wall material"))?
            .id
            .clone();
        let roof = self
            .state
            .plot_build_selected_roof()
            .ok_or_else(|| anyhow::anyhow!("pick a roof material"))?
            .id
            .clone();
        // Keep the B menu open so it switches to the in-progress panel.
        self.start_plot_build(&wall, &roof).await
    }

    /// Cancel an in-progress plot build (materials returned).
    pub async fn plot_build_menu_cancel_build(&mut self) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::CancelPlotBuild {
                entity_id: self.state.entity_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Start timed shell craft on the plot's solid tilled rectangle.
    pub async fn start_plot_build(
        &mut self,
        wall_material_id: &str,
        roof_material_id: &str,
    ) -> anyhow::Result<()> {
        let Some(plot) = self.state.my_plot_under_player() else {
            anyhow::bail!("stand on your plot to build");
        };
        if plot.building_id.is_some() {
            anyhow::bail!("this plot already has a building");
        }
        let plot_id = plot.plot_id;
        self.seq += 1;
        self.session
            .submit_intent(Intent::StartPlotBuild {
                entity_id: self.state.entity_id,
                plot_id,
                wall_material_id: wall_material_id.to_string(),
                roof_material_id: roof_material_id.to_string(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Lock/unlock nearest exterior door when you hold its key (`l` / `L`).
    pub async fn toggle_nearby_door_lock(&mut self) -> anyhow::Result<()> {
        let (px, py) = self.state.player_position();
        let mut best: Option<(f32, String, bool)> = None;
        for d in &self.state.doors {
            if d.lock_id.is_none() {
                continue;
            }
            let dist = (d.x - px).hypot(d.y - py);
            if dist > 3.5 {
                continue;
            }
            if best.as_ref().is_none_or(|(bd, _, _)| dist < *bd) {
                best = Some((dist, d.id.clone(), d.locked));
            }
        }
        let Some((_, door_id, locked_now)) = best else {
            anyhow::bail!("no lockable door nearby");
        };
        let locked = !locked_now;
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetDoorLocked {
                entity_id: self.state.entity_id,
                door_id,
                locked,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Enter through a nearby open player-building door (`Enter`).
    pub async fn enter_nearby_open_door(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        if self.state.effective_inside_building().is_some() {
            anyhow::bail!("already inside");
        }
        let (px, py) = self.state.player_position();
        let mut best: Option<(f32, String)> = None;
        for d in &self.state.doors {
            if !d.open || d.locked {
                continue;
            }
            let player_house = self
                .state
                .buildings
                .iter()
                .find(|b| b.id == d.building_id)
                .is_some_and(|b| b.tags.iter().any(|t| t == "player_built"));
            if !player_house {
                continue;
            }
            let dist = (d.x - px).hypot(d.y - py);
            if dist > 3.5 {
                continue;
            }
            if best.as_ref().is_none_or(|(bd, _)| dist < *bd) {
                best = Some((dist, d.id.clone()));
            }
        }
        let Some((_, door_id)) = best else {
            anyhow::bail!("no open house door nearby — open with f first");
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::EnterBuildingDoor {
                entity_id: self.state.entity_id,
                door_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Exit through a nearby exterior portal from inside a player house (`Enter`).
    /// Works even when the door is closed or locked.
    pub async fn exit_nearby_building_door(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let Some(bid) = self.state.effective_inside_building() else {
            anyhow::bail!("not inside a building");
        };
        let (px, py) = self.state.player_position();
        let mut best: Option<(f32, String)> = None;
        for d in &self.state.doors {
            if d.building_id != bid || d.portal.is_none() {
                continue;
            }
            let player_house = self
                .state
                .buildings
                .iter()
                .find(|b| b.id == d.building_id)
                .is_some_and(|b| b.tags.iter().any(|t| t == "player_built"));
            if !player_house {
                continue;
            }
            let dist = (d.x - px).hypot(d.y - py);
            if dist > 1.5 {
                continue;
            }
            if best.as_ref().is_none_or(|(bd, _)| dist < *bd) {
                best = Some((dist, d.id.clone()));
            }
        }
        let Some((_, door_id)) = best else {
            anyhow::bail!("stand by the door to exit");
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::ExitBuildingDoor {
                entity_id: self.state.entity_id,
                door_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Confirm interior layout for your player building (copper charged on server).
    pub async fn confirm_interior_edit(
        &mut self,
        building_id: String,
        rooms: Vec<flatland_protocol::InteriorRoomEdit>,
        room_doors: Vec<flatland_protocol::InteriorRoomDoorEdit>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::ConfirmInteriorEdit {
                entity_id: self.state.entity_id,
                building_id,
                rooms,
                room_doors,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn cultivate_at(&mut self, x: f32, y: f32) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Cultivate {
                entity_id: self.state.entity_id,
                x,
                y,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn plant_seeds(
        &mut self,
        seed_template_id: String,
        quantity: u32,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::PlantSeeds {
                entity_id: self.state.entity_id,
                seed_template_id: seed_template_id.clone(),
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state
            .push_log(format!("Planting {quantity}× {seed_template_id}…"));
        Ok(())
    }

    pub fn open_plant_menu(&mut self) {
        if self.state.farm_seed_entries().is_empty() {
            self.state.push_log("No seeds in inventory to plant");
            return;
        }
        self.state.show_plant_menu = true;
        self.state.plant_menu_index = 0;
        self.state.plant_quantity = 1;
        self.state.clamp_plant_menu();
    }

    pub fn close_plant_menu(&mut self) {
        self.state.show_plant_menu = false;
    }

    pub fn plant_menu_move(&mut self, delta: i32) {
        let n = self.state.farm_seed_entries().len();
        if n == 0 {
            return;
        }
        let idx = self.state.plant_menu_index as i32 + delta;
        self.state.plant_menu_index = idx.clamp(0, (n - 1) as i32) as usize;
        self.state.clamp_plant_menu();
    }

    pub fn plant_menu_adjust_quantity(&mut self, delta: i32) {
        let next = self.state.plant_quantity as i32 + delta;
        self.state.plant_quantity = next.max(1) as u32;
        self.state.clamp_plant_menu();
    }

    pub fn plant_menu_set_quantity_max(&mut self) {
        if let Some((_, max, _)) = self.state.plant_menu_selection() {
            self.state.plant_quantity = max;
        }
        self.state.clamp_plant_menu();
    }

    pub fn plant_menu_set_quantity_min(&mut self) {
        self.state.plant_quantity = 1;
        self.state.clamp_plant_menu();
    }

    pub async fn confirm_plant_menu(&mut self) -> anyhow::Result<()> {
        let Some((seed, qty, label)) = self.state.plant_menu_selection() else {
            self.close_plant_menu();
            anyhow::bail!("no seeds to plant");
        };
        self.close_plant_menu();
        self.plant_seeds(seed, qty).await?;
        self.state.push_log(format!("Planted {qty}× {label}"));
        Ok(())
    }

    /// Activate the ability or consumable bound to hotbar slot `1`–`9`.
    /// Heals prefer T2/self; other abilities prefer T1. Consumables need no target.
    pub async fn cast_hotbar_ability(&mut self, slot: u8) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let binding = self
            .state
            .hotbar_ability(slot)
            .ok_or_else(|| anyhow::anyhow!("hotbar {slot} unbound — open loadout (l)"))?
            .to_string();
        if let Some(template_id) = flatland_protocol::hotbar_consumable_template(&binding) {
            let qty = self.state.inventory.get(template_id).copied().unwrap_or(0);
            if qty == 0 {
                anyhow::bail!("hotbar {slot}: no {template_id} left — restock or rebind (l)");
            }
            return self.use_item(template_id).await;
        }
        let ability_id = binding;
        if self.state.ability_allows_ground(&ability_id) && self.state.ground_target.is_some() {
            return self
                .cast_ability(&ability_id, Some(self.state.entity_id))
                .await;
        }
        let is_heal = ability_id == "heal_touch"
            || self
                .state
                .ability_meta
                .get(&ability_id)
                .map(|meta| meta.is_heal)
                .unwrap_or(false);
        let target = if is_heal {
            Some(
                self.state
                    .target_for_slot(2)
                    .unwrap_or(self.state.entity_id),
            )
        } else {
            self.state
                .target_for_slot(1)
                .or_else(|| self.state.target_for_slot(2))
        };
        let Some(target_id) = target else {
            anyhow::bail!("no target — Tab to select, then press the hotbar key");
        };
        self.cast_ability(&ability_id, Some(target_id)).await
    }

    /// Bind or clear a hotbar slot (`1`–`9`) via [`Intent::SetHotbarSlot`].
    /// `ability_id` may be a learned ability or `item:<template_id>` for consumables.
    pub async fn set_hotbar_slot(
        &mut self,
        slot: u8,
        ability_id: Option<&str>,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        if !(1..=9).contains(&slot) {
            anyhow::bail!("hotbar slot must be 1–9");
        }
        let ability_id = ability_id
            .map(str::trim)
            .filter(|id| !id.is_empty())
            .map(str::to_string);
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetHotbarSlot {
                entity_id: self.state.entity_id,
                slot,
                ability_id: ability_id.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        let idx = (slot - 1) as usize;
        if self.state.hotbar.len() < 9 {
            self.state.hotbar.resize(9, None);
        }
        if let Some(slot_mut) = self.state.hotbar.get_mut(idx) {
            *slot_mut = ability_id.clone();
        }
        match ability_id {
            Some(id) => {
                let label = if let Some(tid) = flatland_protocol::hotbar_consumable_template(&id) {
                    format!("use {tid}")
                } else {
                    id
                };
                self.state.push_log(format!("Hotbar {slot} → {label}"))
            }
            None => self.state.push_log(format!("Hotbar {slot} cleared")),
        }
        Ok(())
    }

    pub fn npc_verb_options(&self) -> Vec<&'static str> {
        self.state.npc_verb_options()
    }

    pub async fn confirm_npc_verb(&mut self) -> anyhow::Result<()> {
        let Some(npc_id) = self.state.npc_verb_target.clone() else {
            return Ok(());
        };
        let options = self.npc_verb_options();
        let choice = options
            .get(self.state.npc_verb_index)
            .copied()
            .unwrap_or("Talk");
        self.seq += 1;
        match choice {
            "Trade" | "Bank" | "Storage" | "Market" => {
                self.session
                    .submit_intent(Intent::Interact {
                        entity_id: self.state.entity_id,
                        target_id: npc_id,
                        seq: self.seq,
                    })
                    .await?;
            }
            _ => {
                self.session
                    .submit_intent(Intent::NpcTalkOpen {
                        entity_id: self.state.entity_id,
                        npc_id,
                        seq: self.seq,
                    })
                    .await?;
            }
        }
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn npc_talk_send(&mut self) -> anyhow::Result<()> {
        let Some(chat) = self.state.npc_chat.clone() else {
            return Ok(());
        };
        let message = chat.input.trim().to_string();
        if message.is_empty() || chat.pending {
            return Ok(());
        }
        if let Some(c) = self.state.npc_chat.as_mut() {
            c.lines.push(format!("You: {message}"));
            c.input.clear();
            c.pending = true;
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::NpcTalkSay {
                entity_id: self.state.entity_id,
                npc_id: chat.npc_id,
                message,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn npc_talk_close(&mut self) -> anyhow::Result<()> {
        let return_to_verbs = self.state.npc_verb_target.is_some();
        let Some(npc_id) = self.state.npc_chat.as_ref().map(|c| c.npc_id.clone()) else {
            self.state.show_npc_chat = false;
            if return_to_verbs {
                self.state.show_npc_verb_menu = true;
            }
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::NpcTalkClose {
                entity_id: self.state.entity_id,
                npc_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.show_npc_chat = false;
        self.state.npc_chat = None;
        if return_to_verbs {
            self.state.show_npc_verb_menu = true;
        }
        Ok(())
    }

    /// Esc/back inside Talk, Trade, quest-offer, or the verb menu — pop one layer, not the whole session.
    pub async fn npc_interaction_back(&mut self) -> anyhow::Result<()> {
        if self.state.show_quest_offer
            && (self.state.show_npc_chat || self.state.npc_verb_target.is_some())
        {
            self.quest_offer_decline();
            return Ok(());
        }
        if self.state.show_npc_chat {
            return self.npc_talk_close().await;
        }
        if self.state.show_shop_menu {
            return self.back_from_shop_menu().await;
        }
        if self.state.bank_panel.is_some() {
            if !matches!(self.state.bank_ui_mode, BankUiMode::Menu) {
                self.bank_transfer_back();
                return Ok(());
            }
            return self.close_bank_panel().await;
        }
        if self.state.storage_panel.is_some() {
            if !matches!(self.state.storage_ui_mode, StorageUiMode::Menu) {
                self.storage_ui_back();
                return Ok(());
            }
            return self.close_storage_panel().await;
        }
        if self.state.market_panel.is_some() {
            if !matches!(self.state.market_ui_mode, MarketUiMode::Browse) {
                self.market_ui_back();
                return Ok(());
            }
            if self.state.market_buy_confirm.is_some() {
                self.state.market_buy_confirm = None;
                return Ok(());
            }
            return self.close_market_panel().await;
        }
        if self.state.show_npc_verb_menu {
            self.state.show_npc_verb_menu = false;
            self.state.npc_verb_target = None;
        }
        Ok(())
    }

    pub async fn test_damage(&mut self, amount: f32) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::TestDamage {
                entity_id: self.state.entity_id,
                amount,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn cycle_combat_target(&mut self, reverse: bool) -> anyhow::Result<()> {
        self.cycle_combat_target_slot(1, reverse).await
    }

    pub async fn cycle_combat_target_slot(
        &mut self,
        slot_index: u8,
        reverse: bool,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let candidates = self.state.candidates_for_slot(slot_index);
        if candidates.is_empty() {
            anyhow::bail!("no targets nearby");
        }
        let current = self.state.target_for_slot(slot_index);
        let idx = current.and_then(|id| candidates.iter().position(|(eid, _)| *eid == id));
        let next_idx = match idx {
            None => 0,
            Some(i) if reverse => {
                if i == 0 {
                    candidates.len() - 1
                } else {
                    i - 1
                }
            }
            Some(i) => (i + 1) % candidates.len(),
        };
        if idx == Some(next_idx) && candidates.len() == 1 {
            self.clear_combat_target_slot(slot_index).await?;
            return Ok(());
        }
        let (target_id, label) = candidates[next_idx].clone();
        self.set_combat_target_slot(slot_index, target_id, &label)
            .await
    }

    pub async fn set_combat_target_slot(
        &mut self,
        slot_index: u8,
        target_id: EntityId,
        label: &str,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetTargetSlot {
                entity_id: self.state.entity_id,
                slot_index,
                target_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if slot_index == 1 {
            self.state.combat_target = Some(target_id);
            self.state.combat_target_label = Some(label.to_string());
        }
        self.state
            .push_log(format!("Slot {slot_index} target: {label}"));
        Ok(())
    }

    pub async fn set_combat_target(
        &mut self,
        target_id: EntityId,
        label: &str,
    ) -> anyhow::Result<()> {
        self.set_combat_target_slot(1, target_id, label).await
    }

    pub async fn clear_combat_target_slot(&mut self, slot_index: u8) -> anyhow::Result<()> {
        if slot_index == 1 && self.state.combat_target.is_none() {
            return Ok(());
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::ClearTargetSlot {
                entity_id: self.state.entity_id,
                slot_index,
                seq: self.seq,
            })
            .await?;
        if slot_index == 1 {
            self.state.combat_target = None;
            self.state.combat_target_label = None;
        }
        self.state.intents_sent += 1;
        self.state
            .push_log(format!("Slot {slot_index} target cleared"));
        Ok(())
    }

    pub async fn clear_combat_target(&mut self) -> anyhow::Result<()> {
        self.clear_combat_target_slot(1).await
    }

    pub async fn advance_rotation(&mut self, slot_index: u8) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::AdvanceRotation {
                entity_id: self.state.entity_id,
                slot_index,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn assign_slot_preset(
        &mut self,
        slot_index: u8,
        preset_id: &str,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::AssignSlotPreset {
                entity_id: self.state.entity_id,
                slot_index,
                preset_id: preset_id.to_string(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if let Some(slot) = self
            .state
            .combat_slots
            .iter_mut()
            .find(|s| s.slot_index == slot_index)
        {
            slot.preset_id = Some(preset_id.to_string());
            if let Some(preset) = self
                .state
                .rotation_presets
                .iter()
                .find(|p| p.id == preset_id)
            {
                slot.preset_label = Some(preset.label.clone());
                slot.rotation = preset.abilities.clone();
                slot.rotation_index = 0;
            }
        }
        self.state
            .push_log(format!("T{slot_index} loadout → {preset_id}"));
        Ok(())
    }

    pub async fn cast_ability(
        &mut self,
        ability_id: &str,
        target_id: Option<EntityId>,
    ) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let allows_ground = self.state.ability_allows_ground(ability_id);
        let requires_ground = self.state.ability_requires_ground(ability_id);
        if requires_ground && self.state.ground_target.is_none() {
            anyhow::bail!("{ability_id} needs a ground target — Shift+click open ground first");
        }
        let (resolved_target_id, target_point) = if allows_ground {
            if let Some((x, y, z)) = self.state.ground_target {
                (
                    target_id.unwrap_or(self.state.entity_id),
                    Some(flatland_protocol::AimPoint { x, y, z }),
                )
            } else {
                (
                    target_id
                        .or_else(|| self.state.target_for_slot(2))
                        .or_else(|| self.state.target_for_slot(1))
                        .unwrap_or(self.state.entity_id),
                    None,
                )
            }
        } else {
            (
                target_id
                    .or_else(|| self.state.target_for_slot(2))
                    .or_else(|| self.state.target_for_slot(1))
                    .unwrap_or(self.state.entity_id),
                None,
            )
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::Cast {
                entity_id: self.state.entity_id,
                ability_id: ability_id.to_string(),
                target_id: resolved_target_id,
                target_point,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        match target_point {
            Some(point) => self.state.push_log(format!(
                "Cast {ability_id} → ({:.1}, {:.1})",
                point.x, point.y
            )),
            None => self
                .state
                .push_log(format!("Cast {ability_id} → {resolved_target_id}")),
        }
        Ok(())
    }

    pub async fn upsert_rotation_preset(&mut self, preset: RotationPreset) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::UpsertRotationPreset {
                entity_id: self.state.entity_id,
                preset: preset.clone(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if let Some(existing) = self
            .state
            .rotation_presets
            .iter_mut()
            .find(|p| p.id == preset.id)
        {
            *existing = preset.clone();
        } else {
            self.state.rotation_presets.push(preset.clone());
        }
        for slot in &mut self.state.combat_slots {
            if slot.preset_id.as_deref() == Some(preset.id.as_str()) {
                slot.preset_label = Some(preset.label.clone());
                slot.rotation = preset.abilities.clone();
            }
        }
        self.state
            .push_log(format!("Saved rotation: {}", preset.label));
        Ok(())
    }

    pub async fn delete_rotation_preset(&mut self, preset_id: &str) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::DeleteRotationPreset {
                entity_id: self.state.entity_id,
                preset_id: preset_id.to_string(),
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.rotation_presets.retain(|p| p.id != preset_id);
        for slot in &mut self.state.combat_slots {
            if slot.preset_id.as_deref() == Some(preset_id) {
                slot.preset_id = None;
                slot.preset_label = None;
                slot.rotation.clear();
                slot.rotation_index = 0;
            }
        }
        self.state
            .push_log(format!("Deleted rotation: {preset_id}"));
        Ok(())
    }

    pub async fn toggle_auto_attack_slot(&mut self, slot_index: u8) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let enabled = !self
            .state
            .combat_slots
            .iter()
            .find(|s| s.slot_index == slot_index)
            .map(|s| s.auto_enabled)
            .unwrap_or(false);
        self.seq += 1;
        self.session
            .submit_intent(Intent::SetAutoAttack {
                entity_id: self.state.entity_id,
                slot_index,
                enabled,
                seq: self.seq,
            })
            .await?;
        if slot_index == 1 {
            self.state.auto_attack = enabled;
        }
        self.state.intents_sent += 1;
        self.state.push_log(format!(
            "T{slot_index} auto {}",
            if enabled { "ON" } else { "OFF" }
        ));
        Ok(())
    }

    pub async fn pickup_nearest(&mut self) -> anyhow::Result<()> {
        if !self.state.connected {
            anyhow::bail!("not connected");
        }
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let (px, py) = self.state.player_position();
        if self
            .state
            .ground_drops
            .iter()
            .all(|d| distance(px, py, d.x, d.y) > INTERACTION_RADIUS_M)
        {
            anyhow::bail!("no loot within {INTERACTION_RADIUS_M}m — walk onto the * and press f");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Pickup {
                entity_id: self.state.entity_id,
                drop_id: None,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn toggle_auto_attack(&mut self) -> anyhow::Result<()> {
        self.toggle_auto_attack_slot(1).await
    }

    pub async fn dodge(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Dodge {
                entity_id: self.state.entity_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.push_log("Dodge!");
        Ok(())
    }

    pub async fn lunge(&mut self) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        let (forward, strafe) = self.last_move_axes();
        self.seq += 1;
        self.session
            .submit_intent(Intent::Lunge {
                entity_id: self.state.entity_id,
                forward,
                strafe,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.push_log("Lunge!");
        Ok(())
    }

    pub async fn directional_jump(&mut self, forward: f32, strafe: f32) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::DirectionalJump {
                entity_id: self.state.entity_id,
                forward,
                strafe,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.push_log("Jump!");
        Ok(())
    }

    /// Remembered WASD axes for lunge when not currently moving.
    pub fn last_move_axes(&self) -> (f32, f32) {
        (self.last_move_forward, self.last_move_strafe)
    }

    pub async fn set_block(&mut self, enabled: bool) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::Block {
                entity_id: self.state.entity_id,
                enabled,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if enabled {
            self.state.push_log("Blocking");
        }
        Ok(())
    }

    pub async fn equip_mainhand(&mut self, template_id: Option<String>) -> anyhow::Result<()> {
        if !self.state.is_alive() {
            anyhow::bail!("you are dead");
        }
        self.seq += 1;
        self.session
            .submit_intent(Intent::EquipMainhand {
                entity_id: self.state.entity_id,
                template_id,
                instance_id: None,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    /// Equip paperdoll: activate selected slot (unequip filled, or equip first matching candidate).
    pub async fn activate_equip_selection(&mut self) -> anyhow::Result<()> {
        let idx = self.state.equip_menu_index;
        let slots = equip_paperdoll_rows(&self.state);
        let Some(row) = slots.get(idx) else {
            return Ok(());
        };
        match row {
            EquipPaperdollRow::Body { slot, filled } => {
                if *filled {
                    self.equip_worn(*slot, None).await
                } else if let Some(inst) = first_inventory_for_slot(&self.state, *slot) {
                    self.equip_worn(*slot, Some(inst)).await
                } else {
                    self.state.push_log(format!("No item for {}", body_slot_label(*slot)));
                    Ok(())
                }
            }
            EquipPaperdollRow::Mainhand { filled } => {
                if *filled {
                    self.unequip_mainhand().await
                } else if let Some(tid) = first_inventory_weapon(&self.state) {
                    self.equip_mainhand(Some(tid)).await
                } else {
                    self.state.push_log("No weapon in inventory".to_string());
                    Ok(())
                }
            }
            EquipPaperdollRow::Offhand { filled, locked } => {
                if *locked {
                    self.state
                        .push_log("Offhand locked — two-handed weapon equipped".to_string());
                    Ok(())
                } else if *filled {
                    self.unequip_offhand().await
                } else if let Some(tid) = first_inventory_offhand(&self.state) {
                    self.equip_offhand(Some(tid)).await
                } else {
                    self.state
                        .push_log("No offhand item in inventory".to_string());
                    Ok(())
                }
            }
        }
    }

    pub async fn say(
        &mut self,
        channel: flatland_protocol::ChatChannel,
        text: &str,
    ) -> anyhow::Result<()> {
        self.say_to(channel, text, None).await
    }

    pub async fn say_to(
        &mut self,
        channel: flatland_protocol::ChatChannel,
        text: &str,
        to_entity: Option<EntityId>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::Say {
                entity_id: self.state.entity_id,
                channel,
                text: text.to_string(),
                to_entity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn confirm_player_verb(&mut self) -> anyhow::Result<()> {
        let Some(peer) = self.state.player_verbs.target_entity else {
            return Ok(());
        };
        let label = self.state.player_verbs.target_label.clone();
        let choice = crate::social::PlayerVerbState::options()
            .get(self.state.player_verbs.index)
            .copied()
            .unwrap_or("Whisper");
        self.state.player_verbs.close();
        match choice {
            "Trade" => {
                // Only request — peer must accept (Y in chat). Do not auto-respond;
                // TradeRespond requires a pending inbound request from the peer.
                self.seq += 1;
                self.session
                    .submit_intent(Intent::TradeRequest {
                        entity_id: self.state.entity_id,
                        peer_entity_id: peer,
                        seq: self.seq,
                    })
                    .await?;
                self.state.intents_sent += 1;
                self.state
                    .social_chat
                    .push_system(format!("Trade request sent to {label} — waiting for accept"));
            }
            "Whisper" => self.state.social_chat.focus_whisper(peer, &label),
            _ => self.state.social_chat.focus_nearby(),
        }
        Ok(())
    }

    pub async fn respond_pending_trade(&mut self, accept: bool) -> anyhow::Result<()> {
        let Some(pending) = self.state.social_chat.pending_trade.take() else {
            return Ok(());
        };
        self.seq += 1;
        self.session
            .submit_intent(Intent::TradeRespond {
                entity_id: self.state.entity_id,
                peer_entity_id: pending.from_entity,
                accept,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        if accept {
            self.state
                .social_chat
                .push_system(format!("Accepted trade with {}", pending.from_name));
        } else {
            self.state
                .social_chat
                .push_system(format!("Declined trade with {}", pending.from_name));
        }
        Ok(())
    }

    pub async fn submit_social_chat_buffer(&mut self) -> anyhow::Result<()> {
        let text = self.state.social_chat.buffer.trim().to_string();
        if text.is_empty() {
            return Ok(());
        }
        self.state.social_chat.buffer.clear();
        if crate::social::is_chat_slash_line(&text) {
            match crate::social::parse_chat_slash(&text) {
                Some(cmd) => return self.apply_chat_slash(cmd).await,
                None => {
                    self.state.social_chat.push_system(format!(
                        "Unknown command — {}",
                        crate::social::chat_slash_help_text()
                    ));
                    return Ok(());
                }
            }
        }
        let thread = self.state.social_chat.thread;
        let channel = thread.channel();
        let to = thread.to_entity();
        if let Some(peer) = to {
            let label = self.state.social_chat.peer_label.clone();
            self.state
                .social_chat
                .remember_whisper_peer(peer, &label, channel);
        }
        self.say_to(channel, &text, to).await
    }

    async fn apply_chat_slash(
        &mut self,
        cmd: crate::social::ChatSlashCommand,
    ) -> anyhow::Result<()> {
        use crate::social::{chat_slash_help_text, ChatSlashCommand};
        match cmd {
            ChatSlashCommand::Help => {
                self.state
                    .social_chat
                    .push_system(chat_slash_help_text().to_string());
                Ok(())
            }
            ChatSlashCommand::Nearby { message } => {
                self.state.social_chat.focus_nearby();
                self.state
                    .social_chat
                    .push_system("Nearby speech — everyone close can hear");
                if let Some(msg) = message {
                    self.say_to(flatland_protocol::ChatChannel::Nearby, &msg, None)
                        .await
                } else {
                    Ok(())
                }
            }
            ChatSlashCommand::Reply { message } => {
                let Some(peer) = self.state.social_chat.last_whisper_peer.clone() else {
                    self.state.social_chat.push_system(
                        "No one to reply to — wait for a whisper, or /whisper Name",
                    );
                    return Ok(());
                };
                let stone = peer.channel == flatland_protocol::ChatChannel::WhisperStone;
                self.state
                    .social_chat
                    .set_whisper_thread(peer.entity_id, &peer.label, stone);
                self.state.social_chat.push_system(format!(
                    "Replying to {} — type and Enter · /nearby",
                    peer.label
                ));
                if let Some(msg) = message {
                    self.say_to(peer.channel, &msg, Some(peer.entity_id)).await
                } else {
                    Ok(())
                }
            }
            ChatSlashCommand::Whisper { name, message } => {
                let (peer_id, label, stone) = if let Some(name) = name {
                    match self.resolve_whisper_target(&name) {
                        Ok(t) => t,
                        Err(err) => {
                            self.state.social_chat.push_system(err);
                            return Ok(());
                        }
                    }
                } else {
                    let Some(peer) = self.state.social_chat.last_whisper_peer.clone() else {
                        self.state.social_chat.push_system(
                            "Usage: /whisper Name [message] · or /reply after someone whispers you",
                        );
                        return Ok(());
                    };
                    (
                        peer.entity_id,
                        peer.label,
                        peer.channel == flatland_protocol::ChatChannel::WhisperStone,
                    )
                };
                self.state
                    .social_chat
                    .set_whisper_thread(peer_id, &label, stone);
                let channel = if stone {
                    flatland_protocol::ChatChannel::WhisperStone
                } else {
                    flatland_protocol::ChatChannel::Whisper
                };
                if let Some(msg) = message {
                    self.state.social_chat.push_system(format!(
                        "Whisper → {label}"
                    ));
                    self.say_to(channel, &msg, Some(peer_id)).await
                } else {
                    self.state.social_chat.push_system(format!(
                        "Whispering {label} — type and Enter · Esc / /nearby cancels"
                    ));
                    Ok(())
                }
            }
        }
    }

    /// Resolve `/whisper Name` against AOI players (label match).
    fn resolve_whisper_target(
        &self,
        name: &str,
    ) -> Result<(EntityId, String, bool), String> {
        let needle = name.trim().to_ascii_lowercase();
        if needle.is_empty() {
            return Err("Usage: /whisper Name [message]".into());
        }
        let mut candidates: Vec<(EntityId, String)> = self
            .state
            .entities
            .iter()
            .filter(|e| e.id != self.state.entity_id)
            .filter(|e| !e.label.trim().is_empty())
            .filter(|e| e.vitals.is_some())
            .filter(|e| {
                !self
                    .state
                    .npcs
                    .iter()
                    .any(|n| n.id == e.id.to_string())
            })
            .filter(|e| {
                !self
                    .state
                    .hired_workers
                    .iter()
                    .any(|w| w.entity_id == e.id)
            })
            .map(|e| (e.id, e.label.clone()))
            .collect();

        // Also allow matching the last whisper peer by name even if they left AOI briefly.
        if let Some(last) = &self.state.social_chat.last_whisper_peer {
            if !candidates.iter().any(|(id, _)| *id == last.entity_id) {
                candidates.push((last.entity_id, last.label.clone()));
            }
        }

        let exact: Vec<_> = candidates
            .iter()
            .filter(|(_, label)| label.eq_ignore_ascii_case(name.trim()))
            .cloned()
            .collect();
        let pool = if exact.len() == 1 {
            exact
        } else if exact.len() > 1 {
            return Err(format!(
                "Several players named '{name}' nearby — move closer and try again"
            ));
        } else {
            let starts: Vec<_> = candidates
                .iter()
                .filter(|(_, label)| label.to_ascii_lowercase().starts_with(&needle))
                .cloned()
                .collect();
            if starts.len() == 1 {
                starts
            } else if starts.len() > 1 {
                let names: Vec<_> = starts.iter().map(|(_, l)| l.as_str()).collect();
                return Err(format!(
                    "Ambiguous name '{name}' — matches: {}",
                    names.join(", ")
                ));
            } else {
                let contains: Vec<_> = candidates
                    .iter()
                    .filter(|(_, label)| label.to_ascii_lowercase().contains(&needle))
                    .cloned()
                    .collect();
                if contains.len() == 1 {
                    contains
                } else if contains.is_empty() {
                    return Err(format!(
                        "No player matching '{name}' in range — get closer or check the spelling"
                    ));
                } else {
                    let names: Vec<_> = contains.iter().map(|(_, l)| l.as_str()).collect();
                    return Err(format!(
                        "Ambiguous name '{name}' — matches: {}",
                        names.join(", ")
                    ));
                }
            }
        };

        let (id, label) = pool.into_iter().next().unwrap();
        let stone = self
            .state
            .social_chat
            .last_whisper_peer
            .as_ref()
            .is_some_and(|p| p.entity_id == id && p.channel == flatland_protocol::ChatChannel::WhisperStone);
        Ok((id, label, stone))
    }

    pub async fn trade_present_selected(
        &mut self,
        item_instance_id: uuid::Uuid,
    ) -> anyhow::Result<()> {
        self.trade_present_quantity(item_instance_id, None).await
    }

    pub async fn trade_present_quantity(
        &mut self,
        item_instance_id: uuid::Uuid,
        quantity: Option<u32>,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::TradePresent {
                entity_id: self.state.entity_id,
                item_instance_id,
                quantity,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.trade_ui.qty_entry = None;
        self.state.trade_ui.picking_inventory = false;
        Ok(())
    }

    /// Confirm the trade quantity prompt (or present whole stack when qty==1).
    pub async fn trade_confirm_qty_or_present(&mut self) -> anyhow::Result<()> {
        if let Some(entry) = self.state.trade_ui.qty_entry.clone() {
            let qty = self.state.trade_ui.present_quantity();
            return self
                .trade_present_quantity(entry.item_instance_id, qty)
                .await;
        }
        if !self.state.trade_ui.picking_inventory {
            return Ok(());
        }
        let stacks = self.state.trade_presentable_stacks();
        let Some(stack) = stacks.get(self.state.trade_ui.inventory_index).copied() else {
            return Ok(());
        };
        let Some(id) = stack.item_instance_id else {
            return Ok(());
        };
        let label = stack
            .display_name
            .clone()
            .unwrap_or_else(|| stack.template_id.clone());
        if stack.quantity <= 1 {
            self.trade_present_quantity(id, Some(1)).await
        } else {
            self.state
                .trade_ui
                .begin_qty_entry(id, label, stack.quantity);
            Ok(())
        }
    }

    pub async fn trade_set_ready(&mut self, ready: bool) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::TradeSetReady {
                entity_id: self.state.entity_id,
                ready,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn trade_cancel(&mut self) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::TradeCancel {
                entity_id: self.state.entity_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        self.state.trade_ui.close();
        Ok(())
    }

    pub async fn destroy_whisper_stone(
        &mut self,
        item_instance_id: uuid::Uuid,
    ) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::DestroyWhisperStone {
                entity_id: self.state.entity_id,
                item_instance_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub async fn stop(&mut self) -> anyhow::Result<()> {
        self.seq += 1;
        self.session
            .submit_intent(Intent::Stop {
                entity_id: self.state.entity_id,
                seq: self.seq,
            })
            .await?;
        self.state.intents_sent += 1;
        Ok(())
    }

    pub fn disconnect(&self) {
        self.session.disconnect();
    }
}

fn distance(ax: f32, ay: f32, bx: f32, by: f32) -> f32 {
    let dx = ax - bx;
    let dy = ay - by;
    (dx * dx + dy * dy).sqrt()
}

#[cfg(test)]
mod tests {
    use std::collections::BTreeMap;

    use super::*;
    use flatland_protocol::{
        BuildingView, ResourceNodeState, ResourceNodeView, TickDelta, Transform, WorldCoord,
    };

    fn sample_state() -> GameState {
        let mut state = GameState {
            session_id: 1,
            entity_id: 1,
            character_id: None,
            tick: 0,
            chunk_rev: 0,
            content_rev: 0,
            publish_rev: 0,
            entities: vec![EntityState {
                id: 1,
                label: "You".into(),
                transform: Transform {
                    position: WorldCoord::surface(128.0, 128.0),
                    yaw: 0.0,
                    velocity: flatland_protocol::Velocity2D { vx: 0.0, vy: 0.0 },
                },
                vitals: None,
                attributes: None,
                skills: None,
                inside_building: None,
                tile_id: None,
                paperdoll_ref: None,
                presentation_state: None,
                sprite_mode: None,
                progression_xp: None,
                combat_cues: vec![],
                statuses: vec![],
            }],
            player: None,
            resource_nodes: vec![ResourceNodeView {
                id: "oak-1".into(),
                label: "Oak".into(),
                x: 130.0,
                y: 128.0,
                z: 0.0,
                item_template: "oak_log".into(),
                state: ResourceNodeState::Available,
                blocking: true,
                blocking_radius_m: 0.8,
                harvest_off: false,
                tile_id: None,
                                yaw: 0.0,
                pitch: 0.0,
                roll: 0.0,
                draw_scale: 1.0,
                sprite_mode: None,
                growth_progress: None,
                presentation_state: None,
                channel_start_tick: None,
                channel_end_tick: None,
                harvest_drop_templates: vec![],
            }],
            ground_drops: vec![],
            placed_containers: vec![],
            buildings: vec![BuildingView {
                id: "broker-hut".into(),
                label: "Broker".into(),
                x: 148.0,
                y: 118.0,
                width_m: 8.0,
                depth_m: 6.0,
                interior_blueprint: Some("broker_hut".into()),
                tags: vec![],
                market_boundary_zone_ids: vec![],
                market_max_volume: None,
                wall_set: None,
                roof_set: None,
            }],
            doors: vec![flatland_protocol::DoorView {
                id: "door-1".into(),
                building_id: "broker-hut".into(),
                x: 148.0,
                y: 118.0,
                open: false,
                portal: Some("front".into()),
            locked: false,
            accessible: true,
            lock_id: None,
        }],
            interior_map: None,
            npcs: vec![],
            blueprints: vec![],
            building_materials: vec![],
            world_x0: 0.0,
            world_y0: 0.0,
            world_width_m: 256.0,
            world_height_m: 256.0,
            terrain_zones: Vec::new(),
            z_platforms: Vec::new(),
            z_transitions: Vec::new(),
            z_bands_outdoor_backup: None,
            world_clock: flatland_protocol::WorldClock::default(),
            inventory: std::collections::HashMap::new(),
            inventory_hints: std::collections::HashMap::new(),
            logs: VecDeque::new(),
            intents_sent: 0,
            ticks_received: 0,
            connected: true,
            disconnect_reason: None,
            show_stats: false,
            hud_log_hidden: false,
            show_equip_menu: false,
            equip_menu_index: 0,
            show_craft_menu: false,
            show_plot_build_menu: false,
            plot_build_focus_wall: true,
            plot_build_wall_index: 0,
            plot_build_roof_index: 0,
            craft_menu_index: 0,
            craft_batch_quantity: 1,
            show_shop_menu: false,
            shop_catalog: None,
            bank_panel: None,
            bank_menu_index: 0,
            bank_ui_mode: BankUiMode::Menu,
            storage_panel: None,
                market_panel: None,
            market_menu_index: 0,
            market_filter: String::new(),
            market_filter_focused: false,
            market_category_filter: None,
            market_buy_confirm: None,
            market_ui_mode: MarketUiMode::Browse,
            storage_menu_index: 0,
            storage_ui_mode: StorageUiMode::Menu,
            shop_tab: ShopTab::default(),
            shop_menu_index: 0,
            shop_quantity: 1,
            shop_trade_log: VecDeque::new(),
            show_npc_verb_menu: false,
            npc_verb_target: None,
            npc_verb_index: 0,
            player_verbs: crate::social::PlayerVerbState::default(),
            social_chat: crate::social::SocialChatState::default(),
            trade_ui: crate::social::TradeUiState::default(),
            whisper_pouch_ui: crate::social::WhisperPouchUi::default(),
            show_npc_chat: false,
            npc_chat: None,
            show_inventory_menu: false,
            inventory_menu_index: 0,
            inventory_tab: InventoryTab::OnPerson,
            inventory_filter: String::new(),
            inventory_filter_focused: false,
            show_move_picker: false,
            show_rename_prompt: false,
            show_worker_rename: false,
            rename_buffer: String::new(),
            move_picker_index: 0,
            move_picker: None,
            show_grant_picker: false,
            grant_picker_index: 0,
            grant_picker: None,
            show_destroy_picker: false,
            destroy_confirm_pending: false,
            destroy_picker: None,
            combat_target: None,
            combat_target_label: None,
            ground_target: None,
            combat_fx: Vec::new(),
            property_zones: Vec::new(),
            tax_zones: Vec::new(),
            growth_zones: Vec::new(),
            biome_zones: Vec::new(),
            terrain_kind_nav: Vec::new(),
            property_plots: Vec::new(),
            property_plot_settings: None,
            claim_mode: None,
            relocate_mode: None,
            sell_plot_confirm: None,
            sell_plot_armed_at: None,
            show_plant_menu: false,
            plant_menu_index: 0,
            show_farm_access: false,
            farm_access_name_draft: String::new(),
            farm_access_discount_bps: 0,
            farm_access_index: 0,
            plant_quantity: 1,
            in_combat: false,
            auto_attack: true,
            combat_has_los: false,
            attack_cd_ticks: 0,
            gcd_ticks: 0,
            weapon_ability_id: "unarmed".into(),
            mainhand_template_id: None,
            mainhand_label: None,
            mainhand_instance_id: None,
            offhand_template_id: None,
            offhand_label: None,
            offhand_instance_id: None,
            mainhand_hand_slots: 1,
            defense: None,
            worn: BTreeMap::new(),
            carry_mass: 0.0,
            carry_mass_max: 0.0,
            encumbrance: flatland_protocol::EncumbranceState::Light,
            inventory_stacks: Vec::new(),
            keychain_stacks: Vec::new(),
            whisper_pouch_stacks: Vec::new(),
            combat_target_detail: None,
                statuses: Vec::new(),
            cast_progress: None,
            timed_channel: None,
            plot_build_offer: None,
            ability_cooldowns: Vec::new(),
            blocking_active: false,
            max_target_slots: 1,
            combat_slots: Vec::new(),
            rotation_presets: Vec::new(),
            known_abilities: Vec::new(),
            ability_meta: std::collections::HashMap::new(),
            ability_mastery: std::collections::HashMap::new(),
            hotbar: vec![None; 9],
            max_abilities_per_rotation: 0,
            show_loadout_menu: false,
            show_keychain_menu: false,
            keychain_menu_index: 0,
            show_rotation_editor: false,
            loadout_menu_index: 0,
            loadout_hotbar_slot: 1,
            loadout_ability_index: 0,
            loadout_focus_presets: false,
            rotation_editor: RotationEditorState::default(),
            harvest_in_progress: false,
            harvest_started_at: None,
            pending_craft_ack: None,
            pending_worker_job_ack: None,
            attending_worker_instance_id: None,
            quest_log: Vec::new(),
            interactables: Vec::new(),
            ledger: None,
            career: None,
            character_sheet_tab: CharacterSheetTab::Character,
            ledger_period: LedgerPeriod::Day,
            show_quest_offer: false,
            pending_quest_offer: None,
            show_quest_menu: false,
            quest_menu_index: 0,
            quest_withdraw_confirm: false,
            hired_workers: Vec::new(),
            show_workers_menu: false,
            workers_menu_index: 0,
            workers_menu_compact: false,
            worker_step_display: BTreeMap::new(),
            worker_error_display: BTreeMap::new(),
            show_worker_give_picker: false,
            worker_give_picker_index: 0,
            worker_give_picker: None,
            show_worker_give_target_picker: false,
            worker_give_target_picker_index: 0,
            worker_give_target_picker: None,
            show_worker_take_picker: false,
            worker_take_picker_index: 0,
            worker_take_picker: None,
            show_worker_teach_picker: false,
            worker_teach_picker_index: 0,
            worker_teach_picker: None,
            worker_route_editor: None,
            progression_curve: None,
        };
        state.player = state.entities.first().cloned();
        state
    }

    #[test]
    fn whisper_cancels_when_peer_walks_out_of_range() {
        let mut state = sample_state();
        state.player = state.entities.first().cloned();
        let mut peer = state.entities[0].clone();
        peer.id = 2;
        peer.label = "Ada".into();
        peer.transform.position = WorldCoord::surface(129.0, 128.0); // 1m — in range
        state.entities.push(peer.clone());
        state.social_chat.focus_whisper(2, "Ada");
        state.refresh_whisper_range();
        assert!(matches!(
            state.social_chat.thread,
            crate::social::ChatThreadKind::Whisper { peer: 2 }
        ));

        peer.transform.position = WorldCoord::surface(132.0, 128.0); // 4m — out of range
        state.entities[1] = peer;
        state.refresh_whisper_range();
        assert_eq!(
            state.social_chat.thread,
            crate::social::ChatThreadKind::Nearby
        );
        assert!(!state.social_chat.input_focused);
    }

    #[test]
    fn probe_use_world_hired_worker_manage() {
        let mut state = sample_state();
        state.hired_workers.push(flatland_protocol::HiredWorkerView {
            instance_id: "worker-1".into(),
            entity_id: 42,
            def_id: "worker_laborer".into(),
            label: "Sam".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            mode: flatland_protocol::WorkerModeView::JobLoop,
            state: flatland_protocol::WorkerStateView::Working,
            step_label: "cultivate".into(),
            vitals: flatland_protocol::WorkerVitalsSummary {
                health_pct: 100.0,
                stamina_pct: 100.0,
            },
            carry_pct: 0.0,
            last_error: None,
            wage_copper_per_interval: 1,
            effective_wage_copper: 1,
            wage_meters_walked: 0.0,
            lodging_container_id: None,
            route: None,
            route_stop_index: None,
            known_blueprint_ids: Vec::new(),
            level: 1,
            worker_xp: 0.0,
            inventory: Vec::new(),
        });
        let probe = state.probe_use_world();
        let primary = probe.primary.expect("primary");
        assert_eq!(primary.kind, crate::UseWorldKind::HiredWorker);
        assert_eq!(primary.id, "worker-1");
        assert!(primary.hint_line().contains("Manage"));
        assert!(primary.hint_line().contains("Sam"));
        assert_eq!(
            state.nearest_interact_target().as_deref(),
            Some("worker-1")
        );
    }

    #[test]
    fn market_clerk_verb_options_include_market() {
        let mut state = sample_state();
        state.npcs.push(flatland_protocol::NpcView {
            id: "mira_market".into(),
            label: "Mira".into(),
            role: "market_clerk".into(),
            x: 129.0,
            y: 128.0,
            building_id: Some("town_market".into()),
            entity_id: None,
            life_state: None,
            hp_pct: None,
            can_trade: false,
            tile_id: None,
            behavior_state: None,
            presentation_state: None,
            sprite_mode: None,
            paperdoll_ref: None,
        });
        state.npc_verb_target = Some("mira_market".into());
        assert_eq!(state.npc_verb_options(), vec!["Market", "Talk"]);
    }

    #[test]
    fn market_list_excludes_currency_stacks() {
        let mut state = sample_state();
        state.inventory_stacks = vec![
            flatland_protocol::ItemStack {
                template_id: "copper_coin".into(),
                quantity: 50,
                item_instance_id: Some(uuid::Uuid::from_u128(10)),
                display_name: Some("Copper Coin".into()),
                ..Default::default()
            },
            flatland_protocol::ItemStack {
                template_id: "oak_log".into(),
                quantity: 2,
                item_instance_id: Some(uuid::Uuid::from_u128(11)),
                display_name: Some("Oak Log".into()),
                ..Default::default()
            },
            flatland_protocol::ItemStack {
                template_id: "whisper_stone".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(12)),
                display_name: Some("Whisper Stone".into()),
                category: Some("quest".into()),
                listable: Some(false),
                ..Default::default()
            },
        ];
        let opts = state.market_list_item_options(&MarketListSourceKind::Person);
        assert_eq!(opts.len(), 1);
        assert!(opts[0].label.contains("Oak"));
    }

    #[test]
    fn market_browse_filters_by_category_and_search() {
        let mut state = sample_state();
        state.market_panel = Some(flatland_protocol::MarketPanel {
            npc_id: "mira_market".into(),
            npc_label: "Mira".into(),
            building_id: "town_market".into(),
            building_label: "Town Market".into(),
            used_volume: 0.0,
            max_volume: 100.0,
            listings: vec![
                flatland_protocol::MarketListingView {
                    listing_id: uuid::Uuid::from_u128(1),
                    seller_character_id: uuid::Uuid::from_u128(2),
                    seller_label: "Ada".into(),
                    hall_building_id: "town_market".into(),
                    hall_label: "Town Market".into(),
                    template_id: "oak_log".into(),
                    display_name: "Oak Log".into(),
                    category: "resource".into(),
                    quantity: 3,
                    unit_price_copper: 10,
                    line_total_copper: 30,
                    npc_price: false,
                    mine: false,
                },
                flatland_protocol::MarketListingView {
                    listing_id: uuid::Uuid::from_u128(3),
                    seller_character_id: uuid::Uuid::from_u128(2),
                    seller_label: "Ada".into(),
                    hall_building_id: "town_market".into(),
                    hall_label: "Town Market".into(),
                    template_id: "short_sword".into(),
                    display_name: "Short Sword".into(),
                    category: "weapon".into(),
                    quantity: 1,
                    unit_price_copper: 100,
                    line_total_copper: 100,
                    npc_price: false,
                    mine: false,
                },
            ],
            tax_bps: 0,
            tax_flat_copper: 0,
            list_vaults: vec![],
        });
        assert_eq!(state.market_filtered_listing_indices().len(), 2);
        state.market_category_filter = Some("Weapons");
        let weapons = state.market_filtered_listing_indices();
        assert_eq!(weapons.len(), 1);
        assert_eq!(
            state.market_panel.as_ref().unwrap().listings[weapons[0]].display_name,
            "Short Sword"
        );
        state.market_category_filter = None;
        state.market_filter = "oak".into();
        let oak = state.market_filtered_listing_indices();
        assert_eq!(oak.len(), 1);
        assert_eq!(
            state.market_panel.as_ref().unwrap().listings[oak[0]].display_name,
            "Oak Log"
        );
    }

    #[test]
    fn market_list_source_includes_person_and_vaults() {
        let mut state = sample_state();
        let item_id = uuid::Uuid::from_u128(1);
        state.inventory_stacks = vec![flatland_protocol::ItemStack {
            template_id: "oak_log".into(),
            quantity: 2,
            item_instance_id: Some(item_id),
            display_name: Some("Oak Log".into()),
            ..Default::default()
        }];
        state.market_panel = Some(flatland_protocol::MarketPanel {
            npc_id: "mira_market".into(),
            npc_label: "Mira".into(),
            building_id: "town_market".into(),
            building_label: "Town Market".into(),
            used_volume: 0.0,
            max_volume: 100.0,
            listings: vec![],
            tax_bps: 0,
            tax_flat_copper: 0,
            list_vaults: vec![flatland_protocol::MarketListVault {
                building_id: "town_storage".into(),
                building_label: "Town Storage".into(),
                contents: vec![flatland_protocol::ItemStack {
                    template_id: "lumber".into(),
                    quantity: 1,
                    item_instance_id: Some(uuid::Uuid::from_u128(2)),
                    display_name: Some("Lumber".into()),
                    ..Default::default()
                }],
            }],
        });
        let sources = state.market_list_source_options();
        assert_eq!(sources.len(), 2);
        assert!(matches!(sources[0].0, MarketListSourceKind::Person));
        assert!(matches!(
            sources[1].0,
            MarketListSourceKind::TownStorage { .. }
        ));
        assert!(sources[1].1.contains("Town Storage"));
    }

    #[test]
    fn probe_use_world_npc_beats_nearby_loot() {
        let mut state = sample_state();
        state.npcs.push(flatland_protocol::NpcView {
            id: "ada".into(),
            label: "Ada".into(),
            role: "broker".into(),
            x: 129.0,
            y: 128.0,
            building_id: None,
            entity_id: None,
            life_state: None,
            hp_pct: None,
            can_trade: true,
            tile_id: None,
            behavior_state: None,
            presentation_state: None,
            sprite_mode: None,
            paperdoll_ref: None,
        });
        state.ground_drops.push(flatland_protocol::GroundDropView {
            id: "d1".into(),
            template_id: "lumber".into(),
            quantity: 1,
            x: 128.5,
            y: 128.0,
            z: 0.0,
            tile_id: None,
            display_name: None,
            yaw: 0.0,
            pitch: 0.0,
            roll: 0.0,
            draw_scale: 1.0,
        });
        let probe = state.probe_use_world();
        let primary = probe.primary.expect("primary");
        assert_eq!(primary.kind, crate::UseWorldKind::Npc);
        assert_eq!(primary.id, "ada");
    }

    #[test]
    fn probe_use_world_harvest_when_in_range() {
        let state = sample_state(); // oak at 130,128 — player 128,128 → dist 2 > 1.5
        let probe = state.probe_use_world();
        assert!(
            probe.primary.is_none(),
            "oak is 2m away, out of harvest range"
        );
        assert!(probe
            .candidates
            .iter()
            .any(|c| c.kind == crate::UseWorldKind::Harvest));

        let mut state = sample_state();
        state.resource_nodes[0].x = 129.0;
        let probe = state.probe_use_world();
        let primary = probe.primary.expect("primary");
        assert_eq!(primary.kind, crate::UseWorldKind::Harvest);
    }

    #[test]
    fn probe_use_world_door_uses_building_label() {
        let mut state = sample_state();
        state.doors[0].x = 129.0;
        state.doors[0].y = 128.0;
        let probe = state.probe_use_world();
        let primary = probe.primary.expect("primary");
        assert_eq!(primary.kind, crate::UseWorldKind::EnterDoor);
        assert_eq!(primary.label, "Broker");
        assert_eq!(primary.hint_line(), "f → Enter Broker (1.0m)");
    }

    #[test]
    fn empty_entity_tick_preserves_welcome_snapshot() {
        let mut state = sample_state();
        state.inventory.insert("carrot".into(), 3);
        let delta = TickDelta {
            tick: 1,
            entities: vec![],
            resource_nodes: vec![],
            ground_drops: vec![],
            placed_containers: vec![],
            buildings: vec![],
            doors: vec![],
            interior_map: None,
            npcs: vec![],
            inventory: vec![],
            blueprints: vec![],
            building_materials: vec![],
            world_clock: flatland_protocol::WorldClock::default(),
            combat: None,
            quest_log: vec![],
            hired_workers: Vec::new(),
            interactables: vec![],
            ledger: None,
            career: None,
            combat_fx: Vec::new(),
            property_plots: Vec::new(),
        terrain_overlays: Vec::new(),
        };

        state.apply_tick_fields(&delta, 1);

        assert_eq!(state.entities.len(), 1);
        assert!(state.player.is_some());
        assert_eq!(state.inventory.get("carrot"), Some(&3));
        assert_eq!(state.resource_nodes.len(), 1);
    }

    #[test]
    fn tick_preserves_world_layers_when_delta_omits_them() {
        let mut state = sample_state();
        let delta = TickDelta {
            tick: 1,
            entities: state.entities.clone(),
            resource_nodes: vec![],
            ground_drops: vec![],
            placed_containers: vec![],
            buildings: vec![],
            doors: vec![],
            interior_map: None,
            npcs: vec![],
            inventory: vec![],
            blueprints: vec![],
            building_materials: vec![],
            world_clock: flatland_protocol::WorldClock::default(),
            combat: None,
            quest_log: vec![],
            hired_workers: Vec::new(),
            interactables: vec![],
            ledger: None,
            career: None,
            combat_fx: Vec::new(),
            property_plots: Vec::new(),
        terrain_overlays: Vec::new(),
        };

        state.apply_tick_fields(&delta, 1);

        assert_eq!(state.resource_nodes.len(), 1);
        assert_eq!(state.buildings.len(), 1);
        assert_eq!(state.doors.len(), 1);
    }

    #[test]
    fn tick_updates_resource_nodes_when_server_sends_them() {
        let mut state = sample_state();
        let delta = TickDelta {
            tick: 1,
            entities: state.entities.clone(),
            resource_nodes: vec![ResourceNodeView {
                id: "oak-1".into(),
                label: "Oak".into(),
                x: 130.0,
                y: 128.0,
                z: 0.0,
                item_template: "oak_log".into(),
                state: ResourceNodeState::Cooldown,
                blocking: true,
                blocking_radius_m: 0.8,
                harvest_off: false,
                tile_id: None,
                                yaw: 0.0,
                pitch: 0.0,
                roll: 0.0,
                draw_scale: 1.0,
                sprite_mode: None,
                growth_progress: None,
                presentation_state: None,
                channel_start_tick: None,
                channel_end_tick: None,
                harvest_drop_templates: vec![],
            }],
            buildings: vec![],
            doors: vec![],
            interior_map: None,
            npcs: vec![],
            inventory: vec![],
            blueprints: vec![],
            building_materials: vec![],
            world_clock: flatland_protocol::WorldClock::default(),
            ground_drops: vec![],
            placed_containers: vec![],
            combat: None,
            quest_log: vec![],
            hired_workers: Vec::new(),
            interactables: vec![],
            ledger: None,
            career: None,
            combat_fx: Vec::new(),
            property_plots: Vec::new(),
        terrain_overlays: Vec::new(),
        };

        state.apply_tick_fields(&delta, 1);

        assert!(matches!(
            state.resource_nodes[0].state,
            ResourceNodeState::Cooldown
        ));
    }

    #[test]
    fn interact_prefers_npc_over_interior_exit_at_entry_spawn() {
        let mut state = GameState {
            session_id: 1,
            entity_id: 1,
            character_id: None,
            tick: 0,
            chunk_rev: 0,
            content_rev: 0,
            publish_rev: 0,
            entities: vec![EntityState {
                id: 1,
                label: "You".into(),
                transform: Transform {
                    position: WorldCoord::surface(4.5, 2.0),
                    yaw: 0.0,
                    velocity: flatland_protocol::Velocity2D { vx: 0.0, vy: 0.0 },
                },
                vitals: None,
                attributes: None,
                skills: None,
                inside_building: Some("broker_hut".into()),
                tile_id: None,
                paperdoll_ref: None,
                presentation_state: None,
                sprite_mode: None,
                progression_xp: None,
                combat_cues: vec![],
                statuses: vec![],
            }],
            player: None,
            resource_nodes: vec![],
            ground_drops: vec![],
            placed_containers: vec![],
            buildings: vec![BuildingView {
                id: "broker_hut".into(),
                label: "Broker".into(),
                x: 158.0,
                y: 124.0,
                width_m: 8.0,
                depth_m: 6.0,
                interior_blueprint: Some("broker_hut".into()),
                tags: vec![],
                market_boundary_zone_ids: vec![],
                market_max_volume: None,
                wall_set: None,
                roof_set: None,
            }],
            doors: vec![flatland_protocol::DoorView {
                id: "broker_hut_exit".into(),
                building_id: "broker_hut".into(),
                x: 4.3,
                y: 0.9,
                open: true,
                portal: Some("front".into()),
            locked: false,
            accessible: true,
            lock_id: None,
        }],
            interior_map: None,
            npcs: vec![flatland_protocol::NpcView {
                id: "ada_broker".into(),
                label: "Ada".into(),
                x: 4.5,
                y: 2.0,
                building_id: Some("broker_hut".into()),
                role: "broker".into(),
                entity_id: None,
                life_state: None,
                hp_pct: None,
                can_trade: true,
                tile_id: None,
                behavior_state: None,
                presentation_state: None,
                sprite_mode: None,
                paperdoll_ref: None,
            }],
            blueprints: vec![],
            building_materials: vec![],
            world_x0: 0.0,
            world_y0: 0.0,
            world_width_m: 256.0,
            world_height_m: 256.0,
            terrain_zones: Vec::new(),
            z_platforms: Vec::new(),
            z_transitions: Vec::new(),
            z_bands_outdoor_backup: None,
            world_clock: flatland_protocol::WorldClock::default(),
            inventory: std::collections::HashMap::new(),
            inventory_hints: std::collections::HashMap::new(),
            logs: VecDeque::new(),
            intents_sent: 0,
            ticks_received: 0,
            connected: true,
            disconnect_reason: None,
            show_stats: false,
            hud_log_hidden: false,
            show_equip_menu: false,
            equip_menu_index: 0,
            show_craft_menu: false,
            show_plot_build_menu: false,
            plot_build_focus_wall: true,
            plot_build_wall_index: 0,
            plot_build_roof_index: 0,
            craft_menu_index: 0,
            craft_batch_quantity: 1,
            show_shop_menu: false,
            shop_catalog: None,
            bank_panel: None,
            bank_menu_index: 0,
            bank_ui_mode: BankUiMode::Menu,
            storage_panel: None,
                market_panel: None,
            market_menu_index: 0,
            market_filter: String::new(),
            market_filter_focused: false,
            market_category_filter: None,
            market_buy_confirm: None,
            market_ui_mode: MarketUiMode::Browse,
            storage_menu_index: 0,
            storage_ui_mode: StorageUiMode::Menu,
            shop_tab: ShopTab::default(),
            shop_menu_index: 0,
            shop_quantity: 1,
            shop_trade_log: VecDeque::new(),
            show_npc_verb_menu: false,
            npc_verb_target: None,
            npc_verb_index: 0,
            player_verbs: crate::social::PlayerVerbState::default(),
            social_chat: crate::social::SocialChatState::default(),
            trade_ui: crate::social::TradeUiState::default(),
            whisper_pouch_ui: crate::social::WhisperPouchUi::default(),
            show_npc_chat: false,
            npc_chat: None,
            show_inventory_menu: false,
            inventory_menu_index: 0,
            inventory_tab: InventoryTab::OnPerson,
            inventory_filter: String::new(),
            inventory_filter_focused: false,
            show_move_picker: false,
            show_rename_prompt: false,
            show_worker_rename: false,
            rename_buffer: String::new(),
            move_picker_index: 0,
            move_picker: None,
            show_grant_picker: false,
            grant_picker_index: 0,
            grant_picker: None,
            show_destroy_picker: false,
            destroy_confirm_pending: false,
            destroy_picker: None,
            combat_target: None,
            combat_target_label: None,
            ground_target: None,
            combat_fx: Vec::new(),
            property_zones: Vec::new(),
            tax_zones: Vec::new(),
            growth_zones: Vec::new(),
            biome_zones: Vec::new(),
            terrain_kind_nav: Vec::new(),
            property_plots: Vec::new(),
            property_plot_settings: None,
            claim_mode: None,
            relocate_mode: None,
            sell_plot_confirm: None,
            sell_plot_armed_at: None,
            show_plant_menu: false,
            plant_menu_index: 0,
            show_farm_access: false,
            farm_access_name_draft: String::new(),
            farm_access_discount_bps: 0,
            farm_access_index: 0,
            plant_quantity: 1,
            in_combat: false,
            auto_attack: true,
            combat_has_los: false,
            attack_cd_ticks: 0,
            gcd_ticks: 0,
            weapon_ability_id: "unarmed".into(),
            mainhand_template_id: None,
            mainhand_label: None,
            mainhand_instance_id: None,
            offhand_template_id: None,
            offhand_label: None,
            offhand_instance_id: None,
            mainhand_hand_slots: 1,
            defense: None,
            worn: BTreeMap::new(),
            carry_mass: 0.0,
            carry_mass_max: 0.0,
            encumbrance: flatland_protocol::EncumbranceState::Light,
            inventory_stacks: Vec::new(),
            keychain_stacks: Vec::new(),
            whisper_pouch_stacks: Vec::new(),
            combat_target_detail: None,
                statuses: Vec::new(),
            cast_progress: None,
            timed_channel: None,
            plot_build_offer: None,
            ability_cooldowns: Vec::new(),
            blocking_active: false,
            max_target_slots: 1,
            combat_slots: Vec::new(),
            rotation_presets: Vec::new(),
            known_abilities: Vec::new(),
            ability_meta: std::collections::HashMap::new(),
            ability_mastery: std::collections::HashMap::new(),
            hotbar: vec![None; 9],
            max_abilities_per_rotation: 0,
            show_loadout_menu: false,
            show_keychain_menu: false,
            keychain_menu_index: 0,
            show_rotation_editor: false,
            loadout_menu_index: 0,
            loadout_hotbar_slot: 1,
            loadout_ability_index: 0,
            loadout_focus_presets: false,
            rotation_editor: RotationEditorState::default(),
            harvest_in_progress: false,
            harvest_started_at: None,
            pending_craft_ack: None,
            pending_worker_job_ack: None,
            attending_worker_instance_id: None,
            quest_log: Vec::new(),
            interactables: Vec::new(),
            ledger: None,
            career: None,
            character_sheet_tab: CharacterSheetTab::Character,
            ledger_period: LedgerPeriod::Day,
            show_quest_offer: false,
            pending_quest_offer: None,
            show_quest_menu: false,
            quest_menu_index: 0,
            quest_withdraw_confirm: false,
            hired_workers: Vec::new(),
            show_workers_menu: false,
            workers_menu_index: 0,
            workers_menu_compact: false,
            worker_step_display: BTreeMap::new(),
            worker_error_display: BTreeMap::new(),
            show_worker_give_picker: false,
            worker_give_picker_index: 0,
            worker_give_picker: None,
            show_worker_give_target_picker: false,
            worker_give_target_picker_index: 0,
            worker_give_target_picker: None,
            show_worker_take_picker: false,
            worker_take_picker_index: 0,
            worker_take_picker: None,
            show_worker_teach_picker: false,
            worker_teach_picker_index: 0,
            worker_teach_picker: None,
            worker_route_editor: None,
            progression_curve: None,
        };
        state.player = state.entities.first().cloned();
        assert_eq!(
            state.nearest_interact_target().as_deref(),
            Some("ada_broker")
        );
    }

    #[test]
    fn nearby_containers_hides_chest_out_of_range_and_locked_without_key() {
        let mut state = sample_state();
        // Player is at (128, 128) per sample_state(). One chest just inside
        // CONTAINER_RANGE_M, one clearly beyond it.
        state.placed_containers = vec![
            flatland_protocol::PlacedContainerView {
                id: "near".into(),
                template_id: "wooden_chest_small".into(),
                display_name: "Wooden Chest".into(),
                x: 130.0,
                y: 128.0,
                z: 0.0,
                locked: true,
                accessible: true,
                owner_character_id: None,
                contents: vec![flatland_protocol::ItemStack::simple("iron_ore", 2)],
                lock_id: None,
                capacity_volume: None,
                item_instance_id: Some(uuid::Uuid::from_u128(1)),
                tile_id: None,
                worker_lodging_capacity: None,
                blocking: false,
                blocking_radius_m: 0.0,
            building_id: None,
            },
            flatland_protocol::PlacedContainerView {
                id: "far".into(),
                template_id: "wooden_chest_small".into(),
                display_name: "Distant Chest".into(),
                x: 128.0 + CONTAINER_RANGE_M + 5.0,
                y: 128.0,
                z: 0.0,
                locked: false,
                accessible: true,
                owner_character_id: None,
                contents: vec![flatland_protocol::ItemStack::simple("lumber", 1)],
                lock_id: None,
                capacity_volume: None,
                item_instance_id: Some(uuid::Uuid::from_u128(2)),
                tile_id: None,
                worker_lodging_capacity: None,
                blocking: false,
                blocking_radius_m: 0.0,
            building_id: None,
            },
        ];

        let nearby = state.nearby_containers();
        assert_eq!(
            nearby.len(),
            1,
            "far chest must not appear once out of range"
        );
        assert_eq!(nearby[0].view.id, "near");
        assert_eq!(nearby[0].rows.len(), 2, "shell row + contents");
        assert!(nearby[0].rows[0].is_chest_shell);

        // The same chest, but locked and inaccessible (no key held), must hide
        // contents but still show the selectable chest shell row.
        state.placed_containers[0].accessible = false;
        let nearby = state.nearby_containers();
        assert_eq!(nearby.len(), 1);
        assert_eq!(nearby[0].rows.len(), 1);
        assert!(nearby[0].rows[0].is_chest_shell);
    }

    #[test]
    fn chest_pickup_destinations_offer_person_and_worn_bag() {
        let mut state = sample_state();
        let back_id = uuid::Uuid::from_u128(42);
        state.worn.insert(
            BodySlot::Back,
            flatland_protocol::ItemStack {
                template_id: "travel_backpack".into(),
                quantity: 1,
                item_instance_id: Some(back_id),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: Some("Travel Backpack".into()),
                category: Some("container".into()),
                base_mass: Some(2.5),
                base_volume: Some(12.0),
                capacity_volume: Some(80.0),
                stackable: Some(false),
                world_placeable: Some(false),
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        let opts = state.chest_pickup_destinations("chest-1");
        assert!(matches!(
            opts.first().map(|o| &o.kind),
            Some(MoveOptionKind::RelocatePlaced { container_id }) if container_id == "chest-1"
        ));
        assert!(opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::PickupPlaced {
                nest_parent_instance_id: None,
                ..
            }
        )));
        assert!(opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::PickupPlaced {
                nest_parent_instance_id: Some(id),
                ..
            } if *id == back_id
        )));
        assert!(matches!(opts.last().unwrap().kind, MoveOptionKind::Cancel));
    }

    #[test]
    fn placed_container_public_label_hides_owner_custom_name() {
        let owner = uuid::Uuid::from_u128(99);
        let mut state = sample_state();
        state.character_id = Some(uuid::Uuid::from_u128(1));
        state.inventory_hints.insert(
            "wooden_chest_medium".into(),
            InventoryHint {
                display_name: "Medium Wooden Chest".into(),
                category: "container".into(),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: false,
                listable: true,
            },
        );
        let chest = flatland_protocol::PlacedContainerView {
            id: "c1".into(),
            template_id: "wooden_chest_medium".into(),
            display_name: "Barry's Loot #a3f2".into(),
            x: 128.0,
            y: 128.0,
            z: 0.0,
            locked: false,
            accessible: true,
            owner_character_id: Some(owner),
            contents: vec![],
            lock_id: None,
            capacity_volume: None,
            item_instance_id: None,
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        };
        assert_eq!(
            state.placed_container_public_label(&chest),
            "Medium Wooden Chest"
        );
        state.character_id = Some(owner);
        assert_eq!(
            state.placed_container_public_label(&chest),
            "Barry's Loot #a3f2"
        );
    }

    #[test]
    fn location_context_shows_crop_growth_percent_not_depleted() {
        let mut state = sample_state();
        state.player = state.entities.first().cloned();
        state.resource_nodes[0].label = "Carrot (growing)".into();
        state.resource_nodes[0].x = 128.2;
        state.resource_nodes[0].y = 128.0;
        state.resource_nodes[0].state = ResourceNodeState::Cooldown;
        state.resource_nodes[0].growth_progress = Some(0.47);
        let lines = state.location_context_lines();
        let line = lines
            .iter()
            .find(|l| l.text.contains("Carrot"))
            .map(|l| l.text.as_str())
            .unwrap_or("");
        assert!(
            line.contains("(growing, 47%)"),
            "expected growth percent, got: {line}"
        );
        assert!(
            !line.contains("depleted"),
            "growing crop should not show depleted: {line}"
        );
    }

    #[test]
    fn resource_node_near_action_suffix_prefers_growth() {
        let node = ResourceNodeView {
            id: "crop".into(),
            label: "Wheat".into(),
            x: 0.0,
            y: 0.0,
            z: 0.0,
            item_template: "wheat".into(),
            state: ResourceNodeState::Cooldown,
            blocking: false,
            blocking_radius_m: 0.0,
            harvest_off: false,
            tile_id: None,
                        yaw: 0.0,
            pitch: 0.0,
            roll: 0.0,
            draw_scale: 1.0,
            sprite_mode: None,
            growth_progress: Some(0.12),
            presentation_state: None,
            channel_start_tick: None,
            channel_end_tick: None,
            harvest_drop_templates: vec![],
        };
        assert_eq!(
            resource_node_near_action_suffix(&node),
            " (growing, 12%)"
        );
    }

    #[test]
    fn location_context_lists_nearby_resource_node() {
        let mut state = sample_state();
        state.player = state.entities.first().cloned();
        state.resource_nodes[0].x = 128.2;
        state.resource_nodes[0].y = 128.0;
        let lines = state.location_context_lines();
        assert!(
            lines
                .iter()
                .any(|l| l.text.contains("Oak") && l.text.contains("harvest")),
            "expected resource node in context: {:?}",
            lines
        );
    }

    #[test]
    fn quest_board_usable_within_board_radius() {
        let mut state = sample_state();
        state.player = state.entities.first().cloned();
        state.interactables = vec![flatland_protocol::InteractableView {
            id: "board-1".into(),
            kind: "quest_board".into(),
            label: "Town Quest Board".into(),
            x: 130.5,
            y: 128.0,
            z: 0.0,
            board_id: Some("starter_town_board".into()),
        }];
        // ~2.5m away — outside the old 1.5m interact radius, inside the 3.0m board radius.
        assert_eq!(
            state.nearest_interact_target().as_deref(),
            Some("board-1"),
            "quest board should be selectable at ~2.5m"
        );
        let lines = state.location_context_lines();
        assert!(
            lines
                .iter()
                .any(|l| l.text.contains("Town Quest Board") && l.text.contains("f view quests")),
            "HUD should advertise f when board is in range: {:?}",
            lines
        );
    }

    #[test]
    fn inventory_selectable_rows_orders_worn_before_person_on_person_tab() {
        let mut state = sample_state();
        state.worn.insert(
            BodySlot::Back,
            flatland_protocol::ItemStack {
                template_id: "travel_backpack".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(3)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: vec![flatland_protocol::ItemStack::simple("iron_ore", 1)],
                display_name: None,
                category: None,
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        state.inventory_stacks = vec![flatland_protocol::ItemStack::simple("lumber", 4)];
        state.placed_containers = vec![flatland_protocol::PlacedContainerView {
            id: "chest-1".into(),
            template_id: "wooden_chest_small".into(),
            display_name: "Wooden Chest".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            locked: false,
            accessible: true,
            owner_character_id: None,
            contents: vec![flatland_protocol::ItemStack::simple("wood_axe", 1)],
            lock_id: None,
            capacity_volume: None,
            item_instance_id: Some(uuid::Uuid::from_u128(4)),
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        }];

        state.inventory_tab = InventoryTab::OnPerson;
        let rows = state.inventory_selectable_rows();
        let sections: Vec<InventorySection> = rows.iter().map(|r| r.section).collect();
        assert_eq!(
            sections,
            vec![
                InventorySection::Worn,   // backpack shell
                InventorySection::Worn,   // iron_ore nested in backpack
                InventorySection::Person, // lumber
            ]
        );
        assert_eq!(rows[0].stack.template_id, "travel_backpack");
        assert!(rows[0].is_equip_shell);
        assert_eq!(rows[1].stack.template_id, "iron_ore");
        assert_eq!(rows[1].depth, 1);
        assert_eq!(rows[2].stack.template_id, "lumber");

        let lines = state.inventory_browser_lines();
        assert!(lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Section(s) if s.contains("Worn")
        )));
        assert!(lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Item { text, .. } if text.contains("travel_backpack")
                || text.contains("backpack")
        )));
        assert!(!lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Section(s) if s.contains("Nearby") || s.contains("Wooden")
        )));

        state.inventory_tab = InventoryTab::Nearby;
        let nearby_rows = state.inventory_selectable_rows();
        assert_eq!(nearby_rows.len(), 2);
        assert!(nearby_rows[0].is_chest_shell);
        assert_eq!(nearby_rows[1].stack.template_id, "wood_axe");
        let nearby_lines = state.inventory_browser_lines();
        assert!(nearby_lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Section(s) if s.contains("Wooden Chest")
        )));
    }

    #[test]
    fn move_destinations_for_excludes_current_location_and_always_offers_drop_and_cancel() {
        let mut state = sample_state();
        let back_id = uuid::Uuid::from_u128(5);
        state.worn.insert(
            BodySlot::Back,
            flatland_protocol::ItemStack {
                template_id: "travel_backpack".into(),
                quantity: 1,
                item_instance_id: Some(back_id),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: None,
                category: Some("container".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: Some(80.0),
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        state.placed_containers = vec![flatland_protocol::PlacedContainerView {
            id: "chest-1".into(),
            template_id: "wooden_chest_small".into(),
            display_name: "Wooden Chest".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            locked: false,
            accessible: true,
            owner_character_id: None,
            contents: Vec::new(),
            lock_id: None,
            capacity_volume: None,
            item_instance_id: Some(uuid::Uuid::from_u128(6)),
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        }];

        // Item currently sitting loose on the person (Root): backpack + nearby
        // chest should both be offered, plus Drop/Cancel, but not "Root" itself.
        let opts = state.move_destinations_for(
            &flatland_protocol::InventoryLocation::Root,
            None,
            None,
            "lumber",
        );
        assert!(!opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::Move { location, .. } if *location == flatland_protocol::InventoryLocation::Root
        )));
        assert!(opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::Move { location, parent_instance_id, .. }
                if *location == flatland_protocol::InventoryLocation::Worn {
                    slot: BodySlot::Back,
                } && *parent_instance_id == Some(back_id)
        )));
        assert!(opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::Move { location, .. }
                if *location == flatland_protocol::InventoryLocation::Placed { container_id: "chest-1".into() }
        )));
        assert!(matches!(opts.last().unwrap().kind, MoveOptionKind::Cancel));
        assert!(matches!(opts[opts.len() - 2].kind, MoveOptionKind::Drop));

        // Item currently inside the worn backpack: the backpack itself must be
        // excluded from its own destination list (can't move an item into the
        // container it's already in).
        let from_backpack = flatland_protocol::InventoryLocation::Worn {
            slot: BodySlot::Back,
        };
        let opts = state.move_destinations_for(&from_backpack, Some(back_id), None, "iron_ore");
        assert!(!opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::Move { location, parent_instance_id, .. }
                if *location == from_backpack && *parent_instance_id == Some(back_id)
        )));
        assert!(opts.iter().any(|o| matches!(
            &o.kind,
            MoveOptionKind::Move { location, .. } if *location == flatland_protocol::InventoryLocation::Root
        )));
    }

    #[test]
    fn worn_rows_orders_all_body_slots_and_nests_belt_loop_contents() {
        let mut state = sample_state();
        // Insert out of display order — BTreeMap iteration must still yield the
        // canonical Head/Body/Arms/Legs/Feet/Back/Waist order regardless.
        state.worn.insert(
            BodySlot::Waist,
            flatland_protocol::ItemStack {
                template_id: "simple_belt".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(10)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: vec![flatland_protocol::ItemStack::simple("leather_pouch", 1)],
                display_name: None,
                category: Some("container".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        state.worn.insert(
            BodySlot::Head,
            flatland_protocol::ItemStack {
                template_id: "cloth_cap".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(11)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: None,
                category: Some("armor".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        state.worn.insert(
            BodySlot::Back,
            flatland_protocol::ItemStack {
                template_id: "travel_backpack".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(12)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: None,
                category: Some("container".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );

        let rows = state.worn_rows();
        // Head, then Back, then Waist (+ nested pouch) — enum declaration order.
        assert_eq!(rows.len(), 4);
        assert_eq!(rows[0].stack.template_id, "cloth_cap");
        assert!(rows[0].is_equip_shell);
        assert_eq!(rows[1].stack.template_id, "travel_backpack");
        assert!(rows[1].is_equip_shell);
        assert_eq!(rows[2].stack.template_id, "simple_belt");
        assert!(rows[2].is_equip_shell);
        assert_eq!(rows[3].stack.template_id, "leather_pouch");
        assert_eq!(rows[3].depth, 1);
        assert!(!rows[3].is_equip_shell);
    }

    #[test]
    fn move_destinations_for_offers_belt_loop_but_hides_armor_slots() {
        let mut state = sample_state();
        state.worn.insert(
            BodySlot::Waist,
            flatland_protocol::ItemStack {
                template_id: "simple_belt".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(20)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: Some("Simple Belt".into()),
                category: Some("container".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );
        state.worn.insert(
            BodySlot::Head,
            flatland_protocol::ItemStack {
                template_id: "cloth_cap".into(),
                quantity: 1,
                item_instance_id: Some(uuid::Uuid::from_u128(21)),
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: Some("Cloth Cap".into()),
                category: Some("armor".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        },
        );

        let opts = state.move_destinations_for(
            &flatland_protocol::InventoryLocation::Root,
            None,
            None,
            "leather_pouch",
        );
        assert!(
            opts.iter().any(|o| matches!(
                &o.kind,
                MoveOptionKind::Move { location, .. }
                    if *location == flatland_protocol::InventoryLocation::Worn { slot: BodySlot::Waist }
            )),
            "belt loop must be offered when moving a pouch"
        );
        assert!(
            !opts.iter().any(|o| matches!(
                &o.kind,
                MoveOptionKind::Move { location, .. }
                    if *location == flatland_protocol::InventoryLocation::Worn { slot: BodySlot::Head }
            )),
            "armor slots can't hold other items and must not appear as move destinations"
        );
        let belt_opt = opts
            .iter()
            .find(|o| matches!(
                &o.kind,
                MoveOptionKind::Move { location, .. }
                    if *location == flatland_protocol::InventoryLocation::Worn { slot: BodySlot::Waist }
            ))
            .unwrap();
        assert!(belt_opt.label.contains("belt loop"));

        let opts = state.move_destinations_for(
            &flatland_protocol::InventoryLocation::Root,
            None,
            None,
            "lumber",
        );
        assert!(
            !opts.iter().any(|o| o.label.contains("belt loop")),
            "loose materials must not target the belt shell — only nested pouches"
        );
    }

    #[test]
    fn move_destinations_for_offers_dimensional_pouch_on_belt() {
        let mut state = sample_state();
        let belt_id = uuid::Uuid::from_u128(30);
        let pouch_id = uuid::Uuid::from_u128(31);
        state.worn.insert(
            BodySlot::Waist,
            flatland_protocol::ItemStack {
                template_id: "simple_belt".into(),
                quantity: 1,
                item_instance_id: Some(belt_id),
                props: Default::default(),
                status_bindings: Vec::new(),
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
                contents: vec![flatland_protocol::ItemStack {
                    template_id: "dimensional_pouch".into(),
                    quantity: 1,
                    item_instance_id: Some(pouch_id),
                    props: Default::default(),
                    status_bindings: Vec::new(),
                    contents: Vec::new(),
                    display_name: Some("Dimensional Pouch".into()),
                    category: Some("container".into()),
                    base_mass: None,
                    base_volume: None,
                    capacity_volume: Some(200.0),
                    stackable: None,
                    world_placeable: None,
                    worker_lodging_capacity: None,
                    equip_slot: None,
                    armor_physical: None,
                    resists: vec![],
                    hand_slots: None,
            listable: None,
        }],
                display_name: Some("Simple Belt".into()),
                category: Some("container".into()),
                base_mass: None,
                base_volume: None,
                capacity_volume: None,
                stackable: None,
            listable: None,
        },
        );

        let opts = state.move_destinations_for(
            &flatland_protocol::InventoryLocation::Root,
            None,
            None,
            "iron_ore",
        );
        assert!(
            opts.iter().any(|o| matches!(
                &o.kind,
                MoveOptionKind::Move {
                    location,
                    parent_instance_id,
                    ..
                } if *location == flatland_protocol::InventoryLocation::Worn { slot: BodySlot::Waist }
                    && *parent_instance_id == Some(pouch_id)
            )),
            "dimensional pouch clipped on belt must accept loose items"
        );
        assert!(
            opts.iter().any(|o| o.label.contains("Dimensional Pouch")),
            "destination label should name the pouch"
        );
    }

    #[test]
    fn container_volume_label_on_placed_chest_shell() {
        let mut state = sample_state();
        state.placed_containers = vec![flatland_protocol::PlacedContainerView {
            id: "chest-1".into(),
            template_id: "wooden_chest_small".into(),
            display_name: "Camp Chest".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            locked: false,
            accessible: true,
            owner_character_id: None,
            contents: vec![flatland_protocol::ItemStack {
                template_id: "iron_ore".into(),
                quantity: 2,
                item_instance_id: None,
                props: Default::default(),
                status_bindings: Vec::new(),
                contents: Vec::new(),
                display_name: None,
                category: None,
                base_mass: None,
                base_volume: Some(2.0),
                capacity_volume: None,
                stackable: None,
                world_placeable: None,
                worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        }],
            lock_id: None,
            capacity_volume: Some(60.0),
            item_instance_id: Some(uuid::Uuid::from_u128(4)),
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        }];
        let nearby = state.nearby_containers();
        let label = state.container_volume_label(&nearby[0].rows[0]);
        assert!(
            label.contains("vol 4/60"),
            "expected used/cap in label, got {label}"
        );
        assert!(
            label.contains("56 free"),
            "expected free space, got {label}"
        );
    }

    #[test]
    fn key_pair_chest_label_from_placed_lock_id() {
        let mut state = sample_state();
        let owner = uuid::Uuid::from_u128(77);
        state.character_id = Some(owner);
        let lock = uuid::Uuid::from_u128(99).to_string();
        state.placed_containers = vec![flatland_protocol::PlacedContainerView {
            id: "chest-1".into(),
            template_id: "wooden_chest_small".into(),
            display_name: "Barry's Loot #a3f2".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            locked: true,
            accessible: true,
            owner_character_id: Some(owner),
            contents: Vec::new(),
            lock_id: Some(lock.clone()),
            capacity_volume: None,
            item_instance_id: Some(uuid::Uuid::from_u128(4)),
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        }];
        let key_id = uuid::Uuid::from_u128(5);
        let key = flatland_protocol::ItemStack {
            template_id: KEY_TEMPLATE.into(),
            quantity: 1,
            item_instance_id: Some(key_id),
            props: BTreeMap::from([
                (PROP_OPENS_LOCK_ID.into(), lock),
                (
                    PROP_OPENS_CONTAINER_NAME.into(),
                    "Barry's Loot #a3f2".into(),
                ),
            ]),
            status_bindings: Vec::new(),
            contents: Vec::new(),
            display_name: Some("Container Key".into()),
            category: Some("key".into()),
            base_mass: None,
            base_volume: None,
            capacity_volume: None,
            stackable: None,
            world_placeable: None,
            worker_lodging_capacity: None,
            equip_slot: None,
            armor_physical: None,
            resists: vec![],
            hand_slots: None,
            listable: None,
        };
        state.inventory_stacks = vec![key.clone()];
        assert_eq!(
            state.key_pair_chest_label(&key).as_deref(),
            Some("Barry's Loot #a3f2")
        );
        assert!(state.key_drop_blocked(&key));
    }

    #[test]
    fn key_pair_chest_label_prefers_cached_name_when_chest_out_of_range() {
        let mut state = sample_state();
        let lock = uuid::Uuid::from_u128(101).to_string();
        let key = flatland_protocol::ItemStack {
            template_id: KEY_TEMPLATE.into(),
            quantity: 1,
            item_instance_id: Some(uuid::Uuid::from_u128(7)),
            props: BTreeMap::from([
                (PROP_OPENS_LOCK_ID.into(), lock),
                (PROP_OPENS_CONTAINER_NAME.into(), "Camp Stash".into()),
            ]),
            status_bindings: Vec::new(),
            contents: Vec::new(),
            display_name: None,
            category: Some("key".into()),
            base_mass: None,
            base_volume: None,
            capacity_volume: None,
            stackable: None,
            world_placeable: None,
            worker_lodging_capacity: None,
            equip_slot: None,
            armor_physical: None,
            resists: vec![],
            hand_slots: None,
            listable: None,
        };
        state.placed_containers.clear();
        assert_eq!(
            state.key_pair_chest_label(&key).as_deref(),
            Some("Camp Stash")
        );
    }

    #[test]
    fn key_drop_allowed_when_paired_chest_unlocked() {
        let mut state = sample_state();
        let lock = uuid::Uuid::from_u128(100).to_string();
        let key_id = uuid::Uuid::from_u128(6);
        state.placed_containers = vec![flatland_protocol::PlacedContainerView {
            id: "chest-1".into(),
            template_id: "wooden_chest_small".into(),
            display_name: "Camp Chest".into(),
            x: 129.0,
            y: 128.0,
            z: 0.0,
            locked: false,
            accessible: true,
            owner_character_id: None,
            contents: Vec::new(),
            lock_id: Some(lock.clone()),
            capacity_volume: None,
            item_instance_id: None,
            tile_id: None,
            worker_lodging_capacity: None,
            blocking: false,
            blocking_radius_m: 0.0,
            building_id: None,
        }];
        let key = flatland_protocol::ItemStack {
            template_id: KEY_TEMPLATE.into(),
            quantity: 1,
            item_instance_id: Some(key_id),
            props: BTreeMap::from([(PROP_OPENS_LOCK_ID.into(), lock)]),
            status_bindings: Vec::new(),
            contents: Vec::new(),
            display_name: None,
            category: Some("key".into()),
            base_mass: None,
            base_volume: None,
            capacity_volume: None,
            stackable: None,
            world_placeable: None,
            worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        };
        state.inventory_stacks = vec![key.clone()];
        assert!(!state.key_drop_blocked(&key));
        let opts = state.move_destinations_for(
            &flatland_protocol::InventoryLocation::Root,
            None,
            Some(key_id),
            KEY_TEMPLATE,
        );
        assert!(opts.iter().any(|o| o.kind == MoveOptionKind::Drop));
    }

    #[test]
    fn combat_hud_refreshes_progression_xp_when_entity_stale() {
        use flatland_protocol::{CombatHud, ProgressionXp, ProgressionCurve};

        let mut state = sample_state();
        let curve = ProgressionCurve::default();
        let bootstrap = ProgressionXp::bootstrap_new(
            curve.baseline_display,
            curve.xp_base,
            curve.xp_growth,
        );
        let mut fresh = bootstrap.clone();
        fresh.strength += 0.08;
        if let Some(player) = state.player.as_mut() {
            player.progression_xp = Some(bootstrap);
        }

        let combat = CombatHud {
            progression_xp: Some(fresh.clone()),
            progression_baseline: curve.baseline_display,
            progression_xp_base: curve.xp_base,
            progression_xp_growth: curve.xp_growth,
            attributes: state.player.as_ref().and_then(|p| p.attributes),
            skills: state.player.as_ref().and_then(|p| p.skills.clone()),
            ..CombatHud::default()
        };
        state.apply_combat_hud(&combat);

        let xp = state
            .player
            .as_ref()
            .and_then(|p| p.progression_xp.as_ref())
            .expect("xp");
        assert!((xp.strength - fresh.strength).abs() < 0.001);
        assert!(state.progression_curve.is_some());
    }

    #[test]
    fn combat_hud_syncs_known_abilities_and_hotbar() {
        use flatland_protocol::CombatHud;

        let mut state = sample_state();
        let combat = CombatHud {
            known_abilities: vec!["unarmed".into(), "fireball".into()],
            hotbar: vec![Some("fireball".into()), None, Some("unarmed".into())],
            max_abilities_per_rotation: 4,
            ability_id: "short_sword_slash".into(),
            ..CombatHud::default()
        };
        state.apply_combat_hud(&combat);

        assert_eq!(state.known_abilities, vec!["unarmed", "fireball"]);
        assert_eq!(state.hotbar_ability(1), Some("fireball"));
        assert_eq!(state.hotbar_ability(2), None);
        assert_eq!(state.hotbar_ability(3), Some("unarmed"));
        assert_eq!(state.max_abilities_per_rotation, 4);
        let choices = state.loadout_ability_choices();
        assert!(choices.iter().any(|a| a == "short_sword_slash"));
        assert!(choices.iter().any(|a| a == "fireball"));
    }

    #[test]
    fn loadout_hotbar_choices_include_inventory_consumables() {
        let mut state = sample_state();
        state.known_abilities = vec!["unarmed".into()];
        state.weapon_ability_id = "unarmed".into();
        state.inventory_stacks = vec![flatland_protocol::ItemStack {
            template_id: "bottle_of_water".into(),
            quantity: 3,
            item_instance_id: Some(uuid::Uuid::from_u128(9)),
            display_name: Some("Bottle of Water".into()),
            category: Some("consumable".into()),
            ..Default::default()
        }];
        state.inventory.insert("bottle_of_water".into(), 3);
        state.inventory_hints.insert(
            "bottle_of_water".into(),
            InventoryHint {
                display_name: "Bottle of Water".into(),
                category: "consumable".into(),
                ..Default::default()
            },
        );

        let choices = state.loadout_hotbar_choices();
        assert!(choices.iter().any(|c| c.binding == "unarmed"));
        let water = choices
            .iter()
            .find(|c| c.binding == "item:bottle_of_water")
            .expect("water binding");
        assert_eq!(water.meta.as_deref(), Some("use"));
        assert!(water.label.contains("Water"));
        assert_eq!(
            state.hotbar_slot_label(1),
            None,
            "unbound until set"
        );
        state.hotbar = vec![None, None, None, None, Some("item:bottle_of_water".into())];
        assert_eq!(
            state.hotbar_slot_label(5).as_deref(),
            Some("Bottle of Water×3")
        );
    }

    #[test]
    fn storage_store_options_excludes_hand_equipped() {
        let mut state = sample_state();
        let sword_id = uuid::Uuid::from_u128(11);
        let ore_id = uuid::Uuid::from_u128(22);
        state.inventory_stacks = vec![
            flatland_protocol::ItemStack {
                template_id: "short_sword".into(),
                quantity: 1,
                item_instance_id: Some(sword_id),
                display_name: Some("Short Sword".into()),
                category: Some("weapon".into()),
                ..Default::default()
            },
            flatland_protocol::ItemStack {
                template_id: "iron_ore".into(),
                quantity: 5,
                item_instance_id: Some(ore_id),
                display_name: Some("Iron Ore".into()),
                category: Some("resource".into()),
                ..Default::default()
            },
        ];
        state.mainhand_template_id = Some("short_sword".into());
        state.mainhand_instance_id = Some(sword_id);

        let opts = state.storage_store_options();
        assert_eq!(opts.len(), 1);
        assert_eq!(opts[0].item_instance_id, ore_id);
        assert!(state.hand_equipped_instance_ids().contains(&sword_id));
    }

    #[test]
    fn loose_consumable_move_picker_offers_use_and_storage() {
        let mut state = sample_state();
        let inst = uuid::Uuid::from_u128(77);
        state.inventory_stacks = vec![flatland_protocol::ItemStack {
            template_id: "carrot".into(),
            quantity: 2,
            item_instance_id: Some(inst),
            props: Default::default(),
            status_bindings: Vec::new(),
            contents: Vec::new(),
            display_name: Some("Wild Carrot".into()),
            category: Some("consumable".into()),
            base_mass: None,
            base_volume: None,
            capacity_volume: None,
            stackable: Some(true),
            world_placeable: None,
            worker_lodging_capacity: None,
                equip_slot: None,
                armor_physical: None,
                resists: vec![],
                hand_slots: None,
            listable: None,
        }];
        state.inventory_hints.insert(
            "carrot".into(),
            InventoryHint {
                display_name: "Wild Carrot".into(),
                category: "consumable".into(),
                base_mass: Some(0.15),
                base_volume: Some(0.3),
                capacity_volume: None,
                stackable: true,
                listable: true,
            },
        );
        state.show_inventory_menu = true;
        state.inventory_menu_index = 0;

        let row = state.inventory_selected_row().expect("carrot row");
        let mut options = state.move_destinations_for(
            &row.from,
            row.from_parent_instance_id,
            row.stack.item_instance_id,
            &row.stack.template_id,
        );
        if row.from == flatland_protocol::InventoryLocation::Root
            && state.inventory_item_category(&row.stack.template_id) == Some("consumable")
        {
            options.insert(
                0,
                MoveOption {
                    label: "Use (eat / drink)".into(),
                    kind: MoveOptionKind::Use,
                },
            );
        }

        assert_eq!(options.first().map(|o| &o.label), Some(&"Use (eat / drink)".into()));
        assert_eq!(options.first().map(|o| &o.kind), Some(&MoveOptionKind::Use));
        assert!(options.iter().any(|o| matches!(o.kind, MoveOptionKind::Drop)));
    }

    #[test]
    fn inventory_category_group_order_is_stable() {
        assert_eq!(inventory_category_group("weapon").0, "Weapons");
        assert_eq!(inventory_category_group("armor").0, "Armor");
        assert_eq!(inventory_category_group("consumable").0, "Consumables");
        assert_eq!(inventory_category_group("resource").0, "Resources");
        assert_eq!(inventory_category_group("container").0, "Containers");
        assert!(inventory_category_group("weapon").1 < inventory_category_group("armor").1);
        assert!(inventory_category_group("armor").1 < inventory_category_group("other").1);
    }

    #[test]
    fn page_list_index_clamps_without_wrap() {
        assert_eq!(page_list_index(0, -1, 25), 0);
        assert_eq!(page_list_index(0, 1, 25), 10);
        assert_eq!(page_list_index(12, 1, 25), 22);
        assert_eq!(page_list_index(22, 1, 25), 24);
        assert_eq!(page_list_index(5, 1, 0), 0);
        assert_eq!(page_list_index(3, -1, 8), 0);
    }

    #[test]
    fn inventory_filter_hides_non_matching_person_items() {
        let mut state = sample_state();
        let mut sword = flatland_protocol::ItemStack::simple("iron_sword", 1);
        sword.display_name = Some("Iron Sword".into());
        sword.category = Some("weapon".into());
        let mut herb = flatland_protocol::ItemStack::simple("wild_herb", 3);
        herb.display_name = Some("Wild Herb".into());
        herb.category = Some("consumable".into());
        state.inventory_stacks = vec![sword, herb];
        state.inventory_tab = InventoryTab::OnPerson;
        state.inventory_filter = "sword".into();

        let rows = state.inventory_selectable_rows();
        assert_eq!(rows.len(), 1);
        assert_eq!(rows[0].stack.template_id, "iron_sword");

        let lines = state.inventory_browser_lines();
        assert!(lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Item { text, .. } if text.to_ascii_lowercase().contains("sword")
        )));
        assert!(!lines.iter().any(|l| matches!(
            l,
            InventoryBrowserLine::Item { text, .. } if text.to_ascii_lowercase().contains("herb")
        )));
    }

    #[test]
    fn duplicate_identical_instanced_items_use_hover_tooltip_not_inline_hash() {
        let mut state = sample_state();
        let id_a = uuid::Uuid::from_u128(0xa1);
        let id_b = uuid::Uuid::from_u128(0xb2);
        let mut sword_a = flatland_protocol::ItemStack::simple("iron_sword", 1);
        sword_a.display_name = Some("Iron Sword".into());
        sword_a.category = Some("weapon".into());
        sword_a.item_instance_id = Some(id_a);
        let mut sword_b = flatland_protocol::ItemStack::simple("iron_sword", 1);
        sword_b.display_name = Some("Iron Sword".into());
        sword_b.category = Some("weapon".into());
        sword_b.item_instance_id = Some(id_b);
        state.inventory_stacks = vec![sword_a, sword_b];
        state.inventory_tab = InventoryTab::OnPerson;

        let lines = state.inventory_browser_lines();
        let items: Vec<_> = lines
            .iter()
            .filter_map(|l| match l {
                InventoryBrowserLine::Item {
                    title,
                    instance_tooltip,
                    ..
                } => Some((title.clone(), instance_tooltip.clone())),
                _ => None,
            })
            .collect();
        assert_eq!(items.len(), 2);
        for (title, tip) in &items {
            assert!(
                !title.contains('#'),
                "title should not show instance suffix: {title}"
            );
            assert!(
                tip.is_some(),
                "two identical rows should expose instance on hover"
            );
        }

        state.inventory_stacks.pop();
        let lines = state.inventory_browser_lines();
        let one = lines.iter().find_map(|l| match l {
            InventoryBrowserLine::Item {
                title,
                instance_tooltip,
                ..
            } => Some((title.clone(), instance_tooltip.clone())),
            _ => None,
        });
        let (title, tip) = one.expect("one sword row");
        assert!(!title.contains('#'));
        assert!(tip.is_none(), "single row should not need instance tooltip");
    }

    #[test]
    fn inventory_person_rows_group_by_category() {
        let mut state = sample_state();
        let mut sword = flatland_protocol::ItemStack::simple("iron_sword", 1);
        sword.category = Some("weapon".into());
        sword.display_name = Some("Iron Sword".into());
        let mut ore = flatland_protocol::ItemStack::simple("iron_ore", 2);
        ore.category = Some("resource".into());
        ore.display_name = Some("Iron Ore".into());
        let mut potion = flatland_protocol::ItemStack::simple("health_potion", 1);
        potion.category = Some("consumable".into());
        potion.display_name = Some("Health Potion".into());
        state.inventory_stacks = vec![ore, potion, sword];
        state.inventory_tab = InventoryTab::OnPerson;

        let lines = state.inventory_browser_lines();
        let labels: Vec<&str> = lines
            .iter()
            .filter_map(|l| match l {
                InventoryBrowserLine::SlotLabel(s) => Some(s.as_str()),
                _ => None,
            })
            .collect();
        assert!(
            labels.iter().any(|s| s.contains("Weapons")),
            "expected Weapons group: {labels:?}"
        );
        assert!(labels.iter().any(|s| s.contains("Consumables")));
        assert!(labels.iter().any(|s| s.contains("Resources")));

        let weapon_pos = labels.iter().position(|s| s.contains("Weapons")).unwrap();
        let consumable_pos = labels.iter().position(|s| s.contains("Consumables")).unwrap();
        let resource_pos = labels.iter().position(|s| s.contains("Resources")).unwrap();
        assert!(weapon_pos < consumable_pos);
        assert!(consumable_pos < resource_pos);
    }

    #[test]
    fn inventory_tab_cycle_resets_selection() {
        let mut state = sample_state();
        state.inventory_tab = InventoryTab::OnPerson;
        state.inventory_menu_index = 3;
        state.inventory_tab = state.inventory_tab.cycle(true);
        assert_eq!(state.inventory_tab, InventoryTab::Nearby);
        // Client method resets index; enum cycle alone does not — verify cycle labels.
        assert_eq!(InventoryTab::Nearby.label(), "Nearby storage");
        assert_eq!(InventoryTab::OnPerson.cycle(true), InventoryTab::Nearby);
        assert_eq!(InventoryTab::Nearby.cycle(true), InventoryTab::OnPerson);
        assert_eq!(InventoryTab::OnPerson.cycle(false), InventoryTab::Nearby);
    }

    #[test]
    fn parse_bank_copper_amount_blank_and_zero_mean_all() {
        assert_eq!(parse_bank_copper_amount(""), Some(0));
        assert_eq!(parse_bank_copper_amount("  "), Some(0));
        assert_eq!(parse_bank_copper_amount("0"), Some(0));
        assert_eq!(parse_bank_copper_amount("250"), Some(250));
        assert_eq!(parse_bank_copper_amount("nope"), None);
    }

    #[test]
    fn parse_storage_quantity_blank_and_zero_mean_all() {
        assert_eq!(parse_storage_quantity(""), Some(None));
        assert_eq!(parse_storage_quantity("  "), Some(None));
        assert_eq!(parse_storage_quantity("0"), Some(None));
        assert_eq!(parse_storage_quantity("3"), Some(Some(3)));
        assert_eq!(parse_storage_quantity("nope"), None);
    }

    #[test]
    fn path_stuck_repathing_is_hud_noise_but_no_lodging_is_not() {
        assert!(worker_error_is_hud_noise("path stuck — repathing"));
        assert!(worker_error_is_hud_noise("path stuck — nudged clear, repathing"));
        assert!(worker_error_is_hud_noise("returned to lodging after path failures"));
        // Real problem: player may need to place lodging / fix assignment.
        assert!(!worker_error_is_hud_noise(
            "path stuck — no lodging to reset to"
        ));
    }

    #[test]
    fn leaving_building_restores_outdoor_z_bands() {
        use flatland_protocol::{InteriorMapView, ZPlatformView};

        let mut state = sample_state();
        state.z_platforms.clear();
        state.z_transitions.clear();
        state.player.as_mut().unwrap().inside_building = Some("broker_hut".into());
        state.interior_map = Some(InteriorMapView {
            building_id: "broker_hut".into(),
            blueprint_id: "broker_hut".into(),
            background_color: "#000".into(),
            default_floor_color: None,
            floor_height_m: 3.0,
            z_platforms: vec![ZPlatformView {
                id: "floor_0".into(),
                z: 0.0,
                x0: 0.0,
                y0: 0.0,
                x1: 8.0,
                y1: 8.0,
            }],
            z_transitions: vec![],
            rooms: vec![],
            room_doors: vec![],
        });
        state.sync_interior_map_context();
        assert_eq!(state.z_platforms.len(), 1, "indoors installs interior platforms");
        assert!(state.z_bands_outdoor_backup.is_some());

        state.player.as_mut().unwrap().inside_building = None;
        state.sync_interior_map_context();
        assert!(
            state.z_platforms.is_empty(),
            "leaving must restore outdoor bands (empty), not leave interior platforms"
        );
        assert!(state.z_bands_outdoor_backup.is_none());
        assert!(state.interior_map.is_none());
    }
}