GPS background recording:
- Batched writes (10s flush) in native service
- Polling lock prevents parallel processing
- Track by timestamp instead of line count
- Recovery idempotent via max DB timestamp
- Seq numbers on live recorded points
GPX export:
- Button in session detail
- SAF file picker on Android (ACTION_CREATE_DOCUMENT)
- GPS config in metadata (accuracy, minSpeed, minDist)
Charts:
- Pinch zoom enabled at creation (Hammer.js registers handlers)
- touch-action: pan-y blocks pinch in normal view (page scrolls)
- Fullscreen: CSS-only expand (no canvas manipulation)
- Downsampled to 500 points for smooth rendering
- Back gesture collapses fullscreen before closing modal
Build: --real flag finds first non-emulator device
GPX export: button in session detail, standard GPX 1.1 format.
Background GPS fixes:
- Native service: batched writes (10s flush) instead of per-point
appendText — eliminates race condition with reader
- JS reader: skip corrupt lines, sort by timestamp, track by ts
instead of line count — handles partial writes and reordering
- Recovery: idempotent import using max DB timestamp
- Live recording: seq numbers on every point
- FileObserver watches correct path (app root, not files/dev.baldav.app)
- Removed ACCESS_BACKGROUND_LOCATION (causes throttling)
Nav: "Трекинг" button on GPS screen when recording active.
