Struct AppLayout 

pub struct AppLayout {
    pub sidebar: Rect,
    pub main_content: Rect,
    pub status_bar: Rect,
    pub help_bar: Rect,
}

Computed layout regions for the application.

The layout is deterministic: identical terminal dimensions always produce identical region coordinates (Requirement 18.1). No randomness, no caches, no environment variables influence the computation — only the terminal width and height (passed via area).

Fields

sidebar: Rect

main_content: Rect

status_bar: Rect

help_bar: Rect