Upload flow_client.py

src/services/flow_client.py

@@ -52,7 +52,7 @@ class FlowClient:
 
         # AT认证 - 使用Bearer
         if use_at and at_token:
-            headers["authorization"] = f"Bearer {at_token}"
+            headers["Authorization"] = f"Bearer {at_token}"
 
         # 通用请求头
         headers.update({