# Project State ## Project Reference See: .planning/PROJECT.md (updated 2026-02-09) **Core value:** Reliable, lag-free GPS speed display that coexists politely with other Android apps **Current focus:** Phase 4 - GPS Optimization ## Current Position Phase: 4 of 4 (GPS Power Optimization) Plan: 1 of 2 complete Status: In progress Last activity: 2026-02-12 — Completed 04-01-PLAN.md Progress: [███████░░░] 70% (Phase 4: 1/2 plans complete) ## Performance Metrics **Velocity:** - Total plans completed: 7 - Average duration: 6.0 minutes - Total execution time: 0.71 hours **By Phase:** | Phase | Plans | Total | Avg/Plan | |-------|-------|-------|----------| | 1. Foundation | 2 | 19.6 min | 9.8 min | | 2. Provider Migration | 2 | 11.5 min | 5.75 min | | 3. Overlay Refactor | 2 | 8.25 min | 4.1 min | | 4. GPS Optimization | 1 | 4.9 min | 4.9 min | **Recent Trend:** - Last 5 plans: 02-02 (3.8 min), 03-01 (4.0 min), 03-02 (4.25 min), 04-01 (4.9 min) - Trend: Consistent sub-5-minute plans continuing in Phase 4 *Updated after each plan completion* ## Accumulated Context ### Decisions Decisions are logged in PROJECT.md Key Decisions table. Recent decisions affecting current work: | Phase | Plan | Decision | Status | | ----- | ----- | ---------------------------------------------------- | -------------- | | 01 | 01 | SCREAMING_SNAKE naming for behavioral constants | Implemented | | 01 | 01 | Logger replaces print()/customDebugPrint() globally | Implemented | | 01 | 01 | OverlayMessage typed class for IPC | Implemented | | 01 | 01 | ThemeModel delegates to ColorThemes | Implemented | | 01 | 01 | Layer-first directory structure | Implemented | | 01 | 02 | SpeedometerScreen extracted to dedicated file | Implemented | | 01 | 02 | OverlaySpeedometer extracted to dedicated file | Implemented | | 01 | 02 | main.dart as pure entry point (now 65 lines) | Implemented | | 02 | 01 | GpsDataManager singleton removed, ChangeNotifier added | Implemented | | 02 | 01 | SettingsProvider combines theme + units | Implemented | | 02 | 01 | OverlayProvider continuous GPS stream subscription | Implemented | | 02 | 01 | SharedPreferences pre-initialized in async main() | Implemented | | 02 | 02 | Speed Selector uses context.read() | Implemented | | 02 | 02 | Background heartbeat stays in screen (not provider) | Implemented | | 02 | 02 | _isInBackground direct assignment (no setState) | Implemented | | 03 | 01 | OverlayService wraps all FlutterOverlayWindow calls | Implemented | | 03 | 01 | showOverlay verifies with isActive() post-call | Implemented | | 03 | 01 | shareData fire-and-forget (no retry, warn logging) | Implemented | | 03 | 01 | Staleness thresholds: 3s dim, 10s dash | Implemented | | 03 | 01 | Timestamp auto-populated in OverlayMessage factories | Implemented | | 03 | 02 | OverlayProvider delegates ALL calls to OverlayService | Implemented | | 03 | 02 | Error callback pattern for provider-to-screen comm | Implemented | | 03 | 02 | Staleness opacity via withValues(alpha:) no animation | Implemented | | 03 | 02 | GPS grace period timer created (Phase 4 lifecycle) | Implemented | | 04 | 01 | Speed-adaptive GPS precision (8/12 km/h hysteresis) | Implemented | | 04 | 01 | Precision switching gated until 5s after first fix | Implemented | | 04 | 01 | Background grace period re-checks overlay at expiry | Implemented | | 04 | 01 | Wake lock contextual: GPS + (overlay OR foreground) | Implemented | | 04 | 01 | GPS stop preserves last data for staleness display | Implemented | | 04 | 01 | BACKGROUND_GRACE_PERIOD (7s) replaces GPS_GRACE_PERIOD| Implemented | ### Pending Todos **Phase 1 Complete - Verification Needed:** - [ ] Run full functionality test on physical Android device (non-blocking checkpoint from 01-02) - [ ] Verify speed display, theme/unit cycling, overlay launch/close, landscape mode - [ ] Confirm Logger output format in debug console **Phase 2 Complete - Manual Testing Needed:** - [x] 02-01 complete — Provider infrastructure created (7.7 min) - [x] 02-02 complete — MultiProvider wiring and screen migration (3.8 min) - [x] All shared state moved to Provider pattern - [x] Zero setState calls for shared state (only _errorMessage local state) - [ ] Manual testing: Settings persistence, theme/unit cycling, overlay toggle, background heartbeat - [ ] Manual testing: Verify no "setState after dispose" or "ChangeNotifier after dispose" errors **Phase 3 Complete:** - [x] 03-01 complete — Overlay foundation infrastructure (4.0 min) - [x] 03-02 complete — Overlay integration with staleness detection (4.25 min) - [x] OverlayProvider delegates all platform calls to OverlayService - [x] Permission checks before overlay creation, verified creation via isActive() - [x] Staleness detection: dim at 3s, dashes at 10s, immediate snap-back - [x] Error surfacing via snackbar with Settings action for permission errors - [x] GPS grace period timer (30s) infrastructure for Phase 4 - [ ] Manual testing: Verify overlay reliability improvements on physical device - [ ] Manual testing: Test permission error snackbar and Settings action button - [ ] Manual testing: Verify staleness dimming and dash display timing ### Blockers/Concerns **Phase 1 (Complete):** - RESOLVED: All structural requirements (ORG-01 through ORG-08) satisfied - LOW: SCREAMING_SNAKE analyzer warnings (21 intentional info-level warnings) — Consider `analysis_options.yaml` exclusion if noise becomes issue - LOW: Logger severity level guidelines should be documented for contributors - INFO: Phase 1 functionality testing deferred to user-initiated session (non-blocking checkpoint) **Phase 2 (Complete):** - RESOLVED: Provider infrastructure complete — 3 ChangeNotifier classes created - RESOLVED: MultiProvider wiring complete with pre-initialized SharedPreferences - RESOLVED: SpeedometerScreen migrated to Provider pattern (799 lines → 493 lines, -38%) - RESOLVED: Zero setState calls for shared state (theme, unit, GPS data, overlay status) - INFO: Manual testing needed to verify settings persistence and provider lifecycle **Phase 3 (Overlay Refactor) — Complete:** - RESOLVED: OverlayService foundation complete with retry logic - RESOLVED: OverlayProvider integration complete with permission checks and verified creation - RESOLVED: Staleness detection complete (3s dim, 10s dash, immediate snap-back) - RESOLVED: Error surfacing complete (snackbar with Settings action for permission errors) - RESOLVED: GPS grace period timer infrastructure created for Phase 4 - MEDIUM RISK: flutter_overlay_window 0.5.0 has known communication issues (mitigated by retry + verification) - INFO: Manual testing needed to verify overlay reliability improvements on physical device - INFO: All OVRL-01 through OVRL-06 requirements satisfied **Phase 4 (GPS Optimization) - In Progress:** - RESOLVED: Core GPS engine complete with lifecycle awareness and precision switching - RESOLVED: ProcessedGpsData timestamp field added for staleness detection - RESOLVED: Background grace period (7s) with race condition protection - RESOLVED: Conditional wake lock (GPS active + visible) - INFO: Plan 04-01 complete (4.9 min) — ready for Plan 04-02 (UI Integration) - PENDING: SpeedometerScreen needs gpsDataManager.setOverlayProvider() call - PENDING: Background heartbeat (5s) may need adjustment vs 7s grace period - FIELD TESTING: Speed thresholds (8/12 km/h) need validation on physical device - FIELD TESTING: Android OEM behavior varies (Samsung, Xiaomi duty-cycling differences) ## Session Continuity Last session: 2026-02-12 (Plan 04-01 execution complete) Stopped at: Completed 04-01-PLAN.md — Phase 4 in progress (1/2 plans) Resume file: None Next action: Execute Plan 04-02 (UI Integration)