Add zai-sdk dependency and update model references to glm-4.5-air

backend/examples/cli_research.py

@@ -21,7 +21,7 @@ def main() -> None:
     )
     parser.add_argument(
         "--reasoning-model",
-        default="GLM-4.7",
+        default="glm-4.5-air",
         help="Model for the final answer",
     )
     args = parser.parse_args()