Feature: Ratings, Lightbox, Forum-Standort, Notifications, Routen-Recording, Chat-Picker

- Bewertungssystem (ratings.py): Sterne für Sitter/Walks/Places/Routen
- Admin: Server-Log-Viewer + OSM-Cache-Statistiken
- Chat: "Neue Nachricht"-Button mit Freundesliste-Picker
- Forum: 5 neue Kategorien, Standorteingabe (locationPicker), Absende-Toast, Lightbox
- Freunde: Aktivitäts-Filter (Chips), Freundschaftsanfrage → In-App-Notification
- Sitter: locationPicker statt manuelle Koordinateneingabe + ratingStars
- Tagebuch: Bilder-Lightbox im Detail-View, iOS-Modal-Header-Fix (90svh)
- Routen: Start/Stopp-Button wechselt Zustand, nutzt Page_map.isRecording()
- Benachrichtigungen: Delete-Button sichtbar, typ-basierte Navigation, Toast-Feedback
- OSM: globales Semaphore + 429-Retry-Logic; Scheduler: München-Umland, täglich
- SW by-v225, APP_VER 202

backend/routes/admin.py

@@ -116,6 +116,14 @@ async def stats(user=Depends(require_mod)):
         media_count  = media_diary + media_health
         routes_total = conn.execute("SELECT COUNT(*) FROM routes").fetchone()[0]
         events_total = conn.execute("SELECT COUNT(*) FROM events").fetchone()[0]
+        osm_total    = conn.execute("SELECT COUNT(*) FROM osm_pois").fetchone()[0]
+        osm_tiles    = conn.execute("SELECT COUNT(*) FROM osm_tiles").fetchone()[0]
+        osm_by_type  = {
+            row[0]: row[1]
+            for row in conn.execute(
+                "SELECT type, COUNT(*) FROM osm_pois GROUP BY type ORDER BY 2 DESC"
+            ).fetchall()
+        }
 
     return {
         "users_total":        users_total,
@@ -131,6 +139,9 @@ async def stats(user=Depends(require_mod)):
         "media_count":        media_count,
         "routes_total":       routes_total,
         "events_total":       events_total,
+        "osm_total":          osm_total,
+        "osm_tiles":          osm_tiles,
+        "osm_by_type":        osm_by_type,
     }
 
 
@@ -438,6 +449,18 @@ async def system_info(user=Depends(require_admin)):
     }
 
 
+# ------------------------------------------------------------------
+# GET /api/admin/logs
+# ------------------------------------------------------------------
+@router.get("/logs")
+async def get_logs(lines: int = 200, level: str = "", user=Depends(require_admin)):
+    from main import log_buffer
+    entries = list(log_buffer)
+    if level:
+        entries = [e for e in entries if e['l'] == level.upper()]
+    return entries[-lines:]
+
+
 # ------------------------------------------------------------------
 # GET /api/admin/audit
 # ------------------------------------------------------------------