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/static/js/api.js

@@ -225,8 +225,13 @@ const API = (() => {
     get(id)          { return get(`/routes/${id}`); },
     create(data)     { return post('/routes', data); },
     update(id, data) { return patch(`/routes/${id}`, data); },
-    delete(id)       { return del(`/routes/${id}`); },
-    rate(id, wertung) { return post(`/routes/${id}/rate`, { wertung }); },
+    trim(id, gps_track)    { return patch(`/routes/${id}/trim`, { gps_track }); },
+    feedback(id, text)     { return post(`/routes/${id}/feedback`, { text }); },
+    elevation(id)          { return get(`/routes/${id}/elevation`); },
+    delete(id)             { return del(`/routes/${id}`); },
+    rate(id, wertung)                       { return post(`/routes/${id}/rate`, { wertung }); },
+    walked(id, walked_km, progress_pct)    { return post(`/routes/${id}/walked`, { walked_km, progress_pct }); },
+    reverse(id)                            { return post(`/routes/${id}/reverse`, {}); },
     addPhoto(id, file) {
       const fd = new FormData();
       fd.append('file', file);
@@ -236,6 +241,17 @@ const API = (() => {
     },
   };
 
+  // ----------------------------------------------------------
+  // TRAINING & ÜBUNGSFORTSCHRITT
+  // ----------------------------------------------------------
+  const training = {
+    getProgress()            { return get('/training/progress'); },
+    setProgress(id, status)  { return post('/training/progress', { exercise_id: id, status }); },
+    getSuggestions()         { return get('/training/suggestions'); },
+    getPlanProgress()        { return get('/training/plan-progress'); },
+    setPlanProgress(key, checked) { return post('/training/plan-progress', { item_key: key, checked }); },
+  };
+
   // ----------------------------------------------------------
   // GASSI-TREFFEN
   // ----------------------------------------------------------
@@ -556,7 +572,7 @@ const API = (() => {
     get, post, put, patch, del, upload,
     auth, dogs, diary, health, tieraerzte, poison,
     places, routes, walks, events, sitting, forum, lost, knigge, weather, push,
-    friends, chat, webcal, importData, sharing, widget, notifications, services, ratings, sittingAccess,
+    friends, chat, webcal, importData, sharing, widget, notifications, services, ratings, sittingAccess, training,
     subscribeToPush, getLocation,
     APIError,
   };