TaskSidebar:
- Changed from flex layout member to fixed overlay with backdrop
- Click backdrop or press Escape to close
- Content no longer shrinks when sidebar opens — buttons stay accessible
- Positioned at z-50 over main content, top offset for titlebar
Settings — Parakeet model management:
- Added Parakeet model state: download, check, load status
- New downloadParakeet() and loadParakeet() functions
- Listens for parakeet-download-progress events
- Parakeet section shows download/load/status controls
Settings — conditional engine sections:
- Whisper model selector only shows when engine === "whisper"
- Parakeet model controls only show when engine === "parakeet"
- Cleaner UI — only active engine's options visible
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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