Release v0.0.3

Release v0.0.3: Lap Timer, UI Redesign, and Sensor Fusion Improvements

- GPS-based lap timing with sub-sample line crossing detection
- Track recording with circuit and point-to-point modes
- Track management with IndexedDB persistence
- Session history and track auto-detection
- Start line approach indicators

- Apple-style neumorphism UI design
- Redesigned G-meter with true perspective
- Real-time GPS quality indicator
- Color-coded diagnostics thresholds
- IndexedDB chunked recording for multi-hour sessions

- GPS-corrected orientation (ArduPilot-style AHRS compensation)
- Biquad vibration filter for cleaner accelerometer data
- Centripetal lateral G calculation (mount-independent)
- EKF innovation gating to prevent divergence
- Fixed GPS velocity direction bug
- ~50% reduction in mode detection latency

- Expanded app partition from 1.5MB to 2.5MB
- Renamed neo6m driver to ublox-gps for broader compatibility
- Improved documentation structure