Struct App 

pub struct App {

    pub input: String,
    pub cursor_position: usize,
    pub output_lines: Vec<String>,
    pub scroll: u16,
    pub auto_scroll: bool,
    pub focus: FocusPanel,
    pub todo_scroll: u16,
    pub input_scroll: u16,
    pub should_quit: bool,
    pub workflow_rx: UnboundedReceiver<TuiMessage>,
    pub workflow_tx: UnboundedSender<TuiMessage>,
    pub workflow_running: bool,
    pub config_toml: Option<String>,
    pub secrets: Option<HashMap<String, String>>,
    pub build_info: Option<BuildInfo>,
    pub resume_info: Option<ResumeInfo>,
    pub todo_lines: Vec<String>,
    /* private fields */
}

Main application state for the TUI

Fields

input: String

Input buffer for user commands

cursor_position: usize

Cursor position in input buffer (char index, not byte offset)

output_lines: Vec<String>

Output log lines

scroll: u16

Scroll position in output (vertical). u16::MAX = auto-follow bottom.

auto_scroll: bool

Whether auto-scroll is enabled (follows new output)

focus: FocusPanel

Which panel has keyboard focus (Tab cycles)

todo_scroll: u16

Scroll position in todo panel

input_scroll: u16

Manual scroll offset for input box (user-driven)

should_quit: bool

Whether the app should quit

workflow_rx: UnboundedReceiver<TuiMessage>

Receiver for messages from async workflows

workflow_tx: UnboundedSender<TuiMessage>

Sender for messages from async workflows (clone and pass to workflow runners)

workflow_running: bool

Whether a workflow is currently running

config_toml: Option<String>

Configuration TOML for ABK workflows (Task 50)

secrets: Option<HashMap<String, String>>

Secrets for ABK workflows (Task 50)

build_info: Option<BuildInfo>

Build info for ABK workflows (Task 50)

resume_info: Option<ResumeInfo>

Resume info from the last completed task for session continuity

todo_lines: Vec<String>

Latest todo list from LLM todowrite tool

Implementations

impl App

pub fn new() -> Self

Create a new App instance

pub async fn run(&mut self) -> Result<()>

Run the main event loop (async version)

Task 52: Converted from synchronous to async to enable:

• Running async ABK workflows concurrently with TUI
• Using tokio::select! for responsive event handling
• Non-blocking terminal event polling

pub fn render(&mut self, frame: &mut Frame<'_>)

Render the TUI

Trait Implementations

impl Default for App

fn default() -> Self

Returns the “default value” for a type.