Sprint 18: Notification Center, Routen entdecken, Onboarding, Admin-Erweiterungen

- Notifications: History-Tabelle, /api/notifications Endpoints, push.py schreibt in DB
- Notifications: Page (notifications.js) mit Badge, Typen-Icons, gelesen-Markierung
- Routen: Entdecken-Modus mit Ersteller-Anzeige, Nearby-Filter, Mine/Discover Toggle
- Onboarding: Willkommens-Modal nach Registrierung, Push-Angebot nach Login
- Admin: Scheduler-Tab (Jobs anzeigen + manuell triggern), System-Health (DB/Disk/Uptime)
- Admin: Audit-Log (wer hat was wann gemacht), erweiterte Stats (Push-Abos, aktive User, Routen)
- SW: by-v152, APP_VER 125

backend/routes/push.py

@@ -104,7 +104,7 @@ def send_push(subscription_row, payload: dict) -> bool:
 
 
 def send_push_to_user(user_id: int, payload: dict):
-    """Schickt Push an alle Subscriptions eines Users."""
+    """Schickt Push an alle Subscriptions eines Users und speichert Notification in DB."""
     with db() as conn:
         rows = conn.execute(
             "SELECT * FROM push_subscriptions WHERE user_id=?", (user_id,)
@@ -113,6 +113,20 @@ def send_push_to_user(user_id: int, payload: dict):
     for row in rows:
         if send_push(row, payload):
             sent += 1
+
+    # Notification in DB persistieren (unabhängig vom Push-Versand)
+    notif_type  = payload.get("type", "info")
+    notif_title = payload.get("title", "Benachrichtigung")
+    notif_body  = payload.get("body") or payload.get("message")
+    notif_data  = json.dumps({k: v for k, v in payload.items()
+                               if k not in ("type", "title", "body", "message")}) or None
+    with db() as conn:
+        conn.execute(
+            """INSERT INTO notifications (user_id, type, title, body, data)
+               VALUES (?, ?, ?, ?, ?)""",
+            (user_id, notif_type, notif_title, notif_body, notif_data),
+        )
+
     return sent