Implements the complete zone and portal system for room transition
detection and occupancy tracking:
- Zone definitions using AABB volumes stored in SQLite
- Portal definitions as doorway planes with plane points and dimensions
- Portal editor in 3D dashboard using TransformControls
- Zone editor in 3D dashboard for interactive zone placement
- Crossing detection algorithm running at 10Hz in TrackManager
- Two-phase crossing detection (tentative + committed) with velocity threshold
- Occupancy counter with reconciliation pass for persisted values
- WebSocket broadcasts for zone_occupancy and zone_transition events
- REST API endpoints for zones and portals CRUD operations
- Comprehensive tests for crossing detection, occupancy, and reconciliation
Dashboard changes:
- Add portal.js for 3D portal editor with TransformControls
- Add zone-editor.js for 3D zone editor with TransformControls
- Update index.html with portal/zone editor panels
- Update app.js with zone_change, portal_change, zone_occupancy, zone_transition handlers
- Update viz3d.js with zone/portal mesh rendering
Backend changes:
- Wire zone manager in main.go
- Add WebSocket broadcasters in dashboard hub
- Add comprehensive tests in zones/manager_test.go
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
