feat(infra): Stabilized Docker env, fixed circular imports, enabled AI Enricher Robot v1.1

backend/app/diagnose_system.py

@@ -8,7 +8,7 @@ from sqlalchemy.orm import sessionmaker
 try:
     from app.core.config import settings
     from app.core.i18n import t
-    from app.models.system_config import SystemParameter
+    from app.models import SystemParameter
 except ImportError as e:
     print(f"❌ Import hiba: {e}")
     print("Ellenőrizd, hogy a PYTHONPATH be van-e állítva!")