TODO.md

TODO - Refactor remove trajectory system

Phase 1: Backend

• Update backend/main.py: remove imports/usage of TrajectoryManager, remove trajectory fields from latest_data, stop snapshot/append logic.

• Optimize backend WebSocket payload + reduce websocket traffic (throttle camera_frame if needed).

• Delete backend/trajectory_manager.py.

Phase 2: Frontend

• Update frontend/index.html: remove <canvas id="trajectoryCanvas">.

• Update frontend/style.css: remove trajectory canvas overlay styles.

• Update frontend/app.js: remove trajectory renderer, remove state for latestTrajectory, remove parsing of trajectory/trajectory_gesture, keep cursor + gesture + click/scroll.

• Cleanup websocket listener to reduce parsing overhead.

Phase 3: Validation

• Run backend and verify gestures still work (CLICK/SCROLL/NEXT/PREV) and realtime cursor movement.
• Open frontend and verify no canvas/trajectory related errors.
• Confirm WebSocket payload no longer contains trajectory fields.