- Add ActionBar component with expandable toolbar for mobile - Add @mention functionality with autocomplete dropdown - Add browser notification system (push, sound, vibration) - Add NotificationSettings modal for user preferences - Add mention badges on room list cards - Add ReportPreview with Markdown rendering and copy/download - Add message copy functionality with hover actions - Add backend mentions field to messages with Alembic migration - Add lots field to rooms, remove templates - Optimize WebSocket database session handling - Various UX polish (animations, accessibility) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Generic single-database configuration.