Feature: Abo-Kündigung + Ablaufdatum + Dog-Auswahl nach Downgrade (SW by-v945)

backend/routes/dogs.py

@@ -43,7 +43,7 @@ class DogUpdate(BaseModel):
 async def list_dogs(user=Depends(get_current_user)):
     with db() as conn:
         own = conn.execute(
-            "SELECT *, NULL AS shared_by, NULL AS share_role FROM dogs WHERE user_id=? AND (verstorben_am IS NULL) ORDER BY id",
+            "SELECT *, NULL AS shared_by, NULL AS share_role FROM dogs WHERE user_id=? AND (verstorben_am IS NULL) AND (is_active IS NULL OR is_active=1) ORDER BY id",
             (user["id"],)
         ).fetchall()
         shared = conn.execute(