#595 Stage 5 — apply editor cursor placement on the TUI ShellApp path (consume quadraui#466)

[JDonaghy]

Part of epic #595, milestone #9 TUI ShellApp Migration. Stage 5 of the work order. Depends on Stage 2; blocked on quadraui#466.

Goal

Place the editor's blinking cursor on the TUI ShellApp render path.

The gap (gap 3 in the module doc)

Backend::draw_editor's EditorPaintResult::cursor_position is documented "host applies via Frame::set_cursor_position", but no consumer of it exists anywhere in quadraui's shell_adapter/TUI runner. render_content(&self, backend: &mut dyn Backend, ...) has no raw Frame to call set_cursor_position on, so without a quadraui-side fix the live TUI would lose its cursor after cutover.

Fix

Consume quadraui#466: cache the position on TuiBackend from draw_editor, and apply it in tui/run.rs::render_frame post-render_content, exactly the way apply_selection_highlight already runs after render_content. Then verify the cursor is placed correctly through the ShellApp path.

Acceptance

• Cursor visible + correctly positioned via the ShellApp render path (manual + driver_with_shell assertion if the harness can observe cursor position).
• Must land before the Stage 6 cutover.

Dependencies

Depends on Stage 2. Blocked on quadraui#466 (supply-side). Refs: PLAN.md Stage 5; shell_app.rs gap 3.

[JDonaghy]

Coordinator Assignment

Machine: dellserver
Repo: vimcode
Files: (unspecified)
Do not touch: (nothing else in flight)

Briefing

Issue #604: #595 Stage 5 — apply editor cursor placement on the TUI ShellApp path (consume quadraui#466)

Part of epic #595, milestone #9 TUI ShellApp Migration. Stage 5 of the work order. Depends on Stage 2; blocked on quadraui#466.

Goal

Place the editor's blinking cursor on the TUI ShellApp render path.

The gap (gap 3 in the module doc)

Backend::draw_editor's EditorPaintResult::cursor_position is documented "host applies via Frame::set_cursor_position", but no consumer of it exists anywhere in quadraui's shell_adapter/TUI runner. render_content(&self, backend: &mut dyn Backend, ...) has no raw Frame to call set_cursor_position on, so without a quadraui-side fix the live TUI would lose its cursor after cutover.

Fix

Consume quadraui#466: cache the position on TuiBackend from draw_editor, and apply it in tui/run.rs::render_frame post-render_content, exactly the way apply_selection_highlight already runs after render_content. Then verify the cursor is placed correctly through the ShellApp path.

Acceptance

• Cursor visible + correctly positioned via the ShellApp render path (manual + driver_with_shell assertion if the harness can observe cursor position).
• Must land before the Stage 6 cutover.

Dependencies

Depends on Stage 2. Blocked on quadraui#466 (supply-side). Refs: PLAN.md Stage 5; shell_app.rs gap 3.

[JDonaghy]

Coordinator: Assignment Complete

Machine: dellserver
Status: done
Exit code: 0
Duration: 11m 33s
Log: /home/john/.coord/logs/1997d4e16414.log

[JDonaghy]

Coordinator: Assignment Complete

Machine: dellserver
Status: done
Exit code: 0
Duration: 5m 46s
Log: /home/john/.coord/logs/8f7587baa071.log