Fix AVConnect authentication issue

src/routers/credentials.py

@@ -8,7 +8,7 @@ from core.auth import encrypt_secret
 from core.database import ApiCredential, get_db
 from core.dependencies import require_admin
 from core.schemas import CredentialRead, CredentialUpsert
-from services.avconnect import validate_credentials
+from services.avconnect import AVConnectAPI
 
 router = APIRouter(prefix="/api/admin/credentials", tags=["admin-credentials"])
 
@@ -27,7 +27,7 @@ async def upsert_credential(
     _: dict = Depends(require_admin),
 ):
     try:
-        ok, session_id = validate_credentials(req.username, req.password)
+        ok, session_id = AVConnectAPI(req.username, req.password).validate_credentials()
     except Exception as exc:
         raise HTTPException(502, f"Could not reach AVConnect: {exc}")
     if not ok: