- Backend (FastAPI):
- Task comments with nested replies and soft delete
- @mention parsing with 10-mention limit per comment
- Notification system with read/unread tracking
- Blocker management with project owner notification
- WebSocket endpoint with JWT auth and keepalive
- User search API for @mention autocomplete
- Alembic migration for 4 new tables
- Frontend (React + Vite):
- Comments component with @mention autocomplete
- NotificationBell with real-time WebSocket updates
- BlockerDialog for task blocking workflow
- NotificationContext for state management
- OpenSpec:
- 4 requirements with scenarios defined
- add-collaboration change archived
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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