## Why
Menu layouts and hints vary across TUI flows, and mismatched measurement and rendering widths can clip subsequent choices when descriptions wrap.
## What changed
- Apply shared picker styling across selection menus, with stable columns, descriptions hidden when space is tight, and compact hints derived from configured key bindings.
- Measure rows at their actual rendering width, including caller insets, so wrapped options receive enough space.
- Wrap model menu headers and shortcut capture content, and use the shared panel surface for shortcut capture.
- Indicate clipped headers in non-searchable menus and show the configured `view all` shortcut only when the view supplies one.
## Testing
Add regression tests and snapshots for wrapping boundaries, narrow picker layouts, configured selection and cancellation keys, and clipped approval headers. Verify that copy/export actions retain complete payloads and composer drafts.
GitOrigin-RevId: 8416bcd3c66b6cd15db3f9c1804f5f005b7964c1
## What changed
- Bundle `ada`, `babbage`, `curie`, `cushman`, `dali`, and `davinci` themes for configuration and the theme picker, preserving precedence and invalid-file warnings for custom themes with the same names.
- Use `codex.accent` for active and selected controls on truecolor and 256-color terminals, retaining existing fallbacks at lower color depths.
- Honor terminal-default diff backgrounds and clear matching gutter fills, allowing `dali` and `davinci` to show diffs without background fills.
- Restrict Windows native palette fallback to `ConsoleWindowClass` so a ConPTY palette is not mistaken for the renderer's colors when OSC probing fails.
## Testing
Add tests and snapshots for theme preview, selection, cancellation, custom-theme precedence, invalid-file warnings, accent color depth, and disabling individual diff fills.
GitOrigin-RevId: 72f3ef08f82626436dd2d80d40210cc77e1a5616
Eric Traut