feat(ui): inert full-screen app shell#6
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Add the UI-v2 full-screen prompt_toolkit app shell: a persistent layout of a scrolling chat pane, a custom rounded multi-line input dock, and the always-on status bar — so the bar and input never scroll away mid-turn. The dock border is hand-drawn (rounded corners, ASCII fallback) rather than prompt_toolkit's Frame, which only draws square corners and reserves completion-menu height inside the box. One shared render-time terminal width drives the border line and the pane/dock wrap. This shell is inert: Enter echoes the dock text into the pane, /exit quits, PageUp/Down and the wheel scroll the pane. No runtime, model, or AI turn is wired (later branches), and the non-TTY PlainInput path is untouched. status_bar() gains an optional, default-None branch segment (byte-identical when omitted), fed by a fail-closed .git/HEAD read. DESIGN.md gains section 31.12; section 31.11 notes the branch segment.
lavindeep
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Jul 2, 2026
feat(ui): inert full-screen app shell
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Branch 2/9 of the UI v2 full-screen TUI rework.
What
The inert full-screen prompt_toolkit
Applicationskeleton: a scrolling chat pane, a custom rounded multi-line input dock, and the persistent status bar — so the bar and input never scroll away mid-turn.Frame, which draws square corners and reserves completion-menu height inside the box). ASCII fallback for non-unicode terminals.status_bar()gains an optional, default-Nonebranchsegment (⎇ <branch>), byte-identical when omitted, fed by a fail-closed.git/HEADread.Inert scope (later branches wire the rest)
Enter echoes the dock text into the pane;
/exitquits; PageUp/Down and the wheel scroll the pane. No runtime/model/AI turn, no Rich→ANSI pane rendering, no thinking indicator, cancellation, approvals, or queue. The non-TTYPlainInputpath is untouched.Verification
mypy --strictclean, 1286 passed (24 new cases).DummyOutputproves the app constructs, submitted text lands in the pane, Alt+Enter inserts a newline, and/exitexits.