Struct StatusLine 

pub struct StatusLine {
    pub model: String,
    pub cwd: String,
    pub ctx_used: usize,
    pub ctx_window: usize,
    pub hint: Option<(String, HintSeverity)>,
    pub mode_indicator: Option<String>,
    pub session_name: Option<String>,
}

“model · cwd · ctx_used / ctx_window” chrome. Visible in both Idle and Streaming phases so the user always sees what provider is active and how much of the context window is currently in use. Cumulative session token totals are NOT shown here — they’re per-session and don’t tell the user whether the next turn is at risk of overflow. ctx_used answers “what does the model see right now”; ctx_window is the cap. Together they answer “how close are we to compaction”.

Fields

model: String

cwd: String

ctx_used: usize

Tokens currently in the model’s context (last turn’s sent_tokens). Pre-first-turn this is 0; the renderer hides the field then.

ctx_window: usize

Provider’s context window (cap). 0 when not yet known — renderer falls back to a bare “12.3k tok” display in that case.

hint: Option<(String, HintSeverity)>

Right-aligned passive hint with severity. Warning renders red (no-provider nudge, CodingPlan model-missing); Info renders muted (upgrade banner, CodingPlan drift notice). None → no hint.

mode_indicator: Option<String>

Left-aligned mode indicator, prepended before model. Present only when the user explicitly switched to a non-default agent mode (Plan today; conceivably others later). None for the default Build mode so the status row doesn’t gain noise for the common case. Renders in brand color (Role::Brand) to draw the eye — switching modes changes whether file edits and shell run, so the user wants this prominent.

session_name: Option<String>

Current session display name, shown as a right-aligned cyan pill overlaid on the input box’s top rule. Some only after the user has explicitly run /rename (Session::user_renamed) — auto-named / default sessions leave this None to keep the chrome quiet on fresh conversations.

Trait Implementations

impl Clone for StatusLine

fn clone(&self) -> StatusLine

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for StatusLine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for StatusLine

fn default() -> StatusLine

Returns the “default value” for a type.