Update spec files to match current implementation state

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

FitnessSync/backend/src/api/setup.py

@@ -35,6 +35,8 @@ def save_garmin_credentials(credentials: GarminCredentials, db: Session = Depend
     
     if status == "mfa_required":
         return JSONResponse(status_code=202, content={"status": "mfa_required", "message": "MFA code required."})
+    elif status == "error":
+        raise HTTPException(status_code=401, detail="Login failed. Check username/password.")
     
     return JSONResponse(status_code=200, content={"status": "success", "message": "Logged in and tokens saved."})
 
@@ -52,5 +54,8 @@ def complete_garmin_mfa(mfa_request: GarminMFARequest, db: Session = Depends(get
             raise HTTPException(status_code=400, detail="MFA verification failed.")
             
     except Exception as e:
-        logger.error(f"MFA verification failed with exception: {e}", exc_info=True)
-        raise HTTPException(status_code=500, detail=f"MFA verification failed: {str(e)}")
+        if str(e) == "No pending MFA session found.":
+            raise HTTPException(status_code=400, detail="No pending MFA session found.")
+        else:
+            logger.error(f"MFA verification failed with exception: {e}", exc_info=True)
+            raise HTTPException(status_code=500, detail=f"MFA verification failed: {str(e)}")