Session 2026-04-19: Navigation, Kompass, Übungsfortschritt

Routen-Navigation:
- POI-Marker: farbige Kreise mit Phosphor-Icons (wie Hauptkarte)
- Screensaver: Navi-Pfeil dreht sich via DeviceOrientationEvent (iOS+Android)
- Pfeil-Dämpfung: EMA α=0.12 mit Wrap-Around
- GPS-Distanz-Bug: Fortschritt nur wenn <500m zur Route
- fitBounds: User-Position nur wenn <20km von Route
- Screensaver: "zur Route" vs "verbleibend" kontextabhängig
- Richtungspfeile entlang Route (blau, max 7 Stück)
- Umkehren ins Route-Detail verschoben, Detail-Map rebuildet sich
- rk-header z-index:10 (Leaflet-Tiles liefen drüber)
- 2-Sek. Screensaver-Entsperrung

km-Tracking:
- route_walks Tabelle
- POST /api/routes/{id}/walked (≥50%)
- total_km = erstellte Routes + gelaufene route_walks
- Toast bei neuem Badge

Übungsfortschritt:
- exercise_progress + training_plan_progress Tabellen
- GET/POST /api/training/progress, /plan-progress, /suggestions
- uebungen.js: API-first + localStorage-Fallback + Auto-Migration
- Empfehlungs-Banner (regelbasiert)
- Toast bei "sitzt"

backend/main.py

@@ -96,6 +96,9 @@ from routes.notifications  import router as notifications_router
 from routes.services       import router as services_router
 from routes.ratings        import router as ratings_router
 from routes.sitting_access import router as sitting_access_router
+from routes.stats          import router as stats_router
+from routes.achievements   import router as achievements_router
+from routes.training       import router as training_router
 
 app.include_router(auth_router,       prefix="/api/auth",       tags=["Auth"])
 app.include_router(dogs_router,       prefix="/api/dogs",       tags=["Hunde"])
@@ -129,6 +132,9 @@ app.include_router(notifications_router,   prefix="/api/notifications", tags=["N
 app.include_router(services_router,        prefix="/api/services",      tags=["Services"])
 app.include_router(ratings_router,         prefix="/api/ratings",       tags=["Ratings"])
 app.include_router(sitting_access_router,  prefix="/api/sitting-access", tags=["SittingAccess"])
+app.include_router(stats_router,           prefix="/api/stats",           tags=["Stats"])
+app.include_router(achievements_router,    prefix="/api/achievements",     tags=["Achievements"])
+app.include_router(training_router,        prefix="/api/training",         tags=["Training"])
 
 
 # ------------------------------------------------------------------