* feat(nav-rail): add expand/collapse toggle with project names and settings control
The NavRail introduced in v1.7.5 only shows project icons without names,
making it difficult to identify which project is active when multiple
projects share similar icons or use letter avatars.
Changes:
- Add expandable NavRail that shows full project names alongside icons
- Default to expanded when multiple projects are open
- Auto-collapse to icon-only mode with a single project (nothing to differentiate)
- Add toggle button at bottom of rail with Cmd+Shift+E keyboard shortcut
- Highlight active project with interactive.selection background for clarity
- Show keyboard shortcut hints in tooltip and expanded label
- Add 'Expand project rail' checkbox in Settings > Appearance > Navigation
- Persist expansion state across sessions
Fixes: NavRail project icons are ambiguous without visible project names
* feat: improve nav rail toggle and navigation settings
- Make nav rail collapsed by default with smoother text fade behavior
- Move nav rail and terminal quick keys controls into a dedicated Navigation section
- Update keyboard shortcuts for logs/status and nav rail expand/collapse
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Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
