New features:
- CPU sparklines on dashboard showing 30-minute container history
- Real-time screenshot updates via Server-Sent Events
- Auto-focus terminals on page load
- Tab reuse when clicking dashboard tiles
- pyte-based screenshot rendering with proper ANSI interpretation
- Dirty tracking for efficient screenshot caching
Documentation:
- Updated README with new features and API endpoints
- Added Dashboard Features section
- Documented compose mode CPU sparklines
- Added API endpoints table
Technical improvements:
- Docker stats collection via Unix socket (no new deps)
- SSE endpoint for activity notifications
- Proper pyte-to-Rich color mapping
- Terminal lifecycle race condition fixes
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