fix: xREL – 1 API-Call/Film, SQLite-Cache 12h, German+DL Filter

backend/src/db.js

@@ -556,6 +556,17 @@ if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='mov
     db.exec("ALTER TABLE movie_favorites ADD COLUMN fsk TEXT NOT NULL DEFAULT ''");
 }
 
+// xREL Badge Cache (persistent, überlebt Container-Restarts)
+if (!db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='xrel_cache'").get()) {
+  db.exec(`
+    CREATE TABLE xrel_cache (
+      cache_key  TEXT PRIMARY KEY,
+      value      TEXT NOT NULL,
+      expires_at INTEGER NOT NULL
+    )
+  `);
+}
+
 // TMDb-Token Default
 if (!db.prepare("SELECT value FROM admin_settings WHERE key='tmdb_token'").get())
   db.prepare("INSERT INTO admin_settings (key,value) VALUES ('tmdb_token','')").run();