Root cause of the non-monotonic sighting count (60->29->63): MAC-rotating ecosystems mint a new tracker row per rotation, tracker rows were never pruned, and the UI re-sorts constantly, so different rows' counts read as one sequence. Compounded by no ingestion throttle and a lost-update race.
Fixes:
- ScanService: throttle the persisted path to <=1 sighting/device/15s (presence engine still sees every advert). Stops count inflation + DB hammering. @Volatile clone-alert ts; clear throttle map on stop.
- TrackerRepository: Mutex around record() (was a lost-update race: concurrent observations did get()->compute->upsert() with no lock). Always compute the co-movement assessment for display.
- VigilDatabase: prune stale non-approved tracker rows (were never deleted); +lastRssi/peakRssi/distinctPlaces/effectiveSightings for grounding; version 2.
- BaselineManager: count DWELL (one visit per 10-min window), not per-sighting. Old per-sighting count let a busy street or chatty tracker mint a fake 'home' in seconds and auto-trust a real stalker — a safety flaw.
- BleTrackerScanner: Apple filter now matches only Find My type 0x12, not every Apple device (iPhones/Watches/AirPods).
- UI: show distinct places + last RSSI on cards; detail sheet shows last/peak RSSI, distinct places, co-movement sightings, adverts logged; Active list filters to devices seen in the last 10 min so rotated identities drop off.
- Tests: CoMovementEvaluatorTest locks dedup, the RSSI gate, and the place/separated thresholds.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0187UiEtasyowhEBYs6s9iF5
- detect/PresenceEngine.kt: identity-agnostic streaming detector for key-rotating clones (novel-churn gate, seamless-handover chain, co-movement gate, coherence). Full design in docs/detection-rotation-clone.md.
- Wired into ScanService as a parallel signal; CONFIRMED verdict raises a distinct rotating-tracker alert (softer tiers stay silent pending real-capture validation).
- PresenceEngineTest: synthetic clone (moving -> CONFIRMED), stationary clone (gated), single real tracker + far-ambient (CLEAR).
- CI now runs :app:testDebugUnitTest so the engine has behavioural verification, not just a compile check.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0187UiEtasyowhEBYs6s9iF5
- Rewrote MainScreen: top bar, prominent status hero (idle/clear/watching/alert), active vs trusted sections, per-tracker cards with status icons, and a detail bottom sheet with co-movement evidence + trust action.
- Sensitivity selector with per-mode explanation; on-device/no-network footer.
- core-ktx 1.13.1->1.15.0, activity-compose 1.9.3->1.10.1 (kept the proven Kotlin/AGP/Compose matrix for build stability).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0187UiEtasyowhEBYs6s9iF5
Kara Zajac