修复Supervisor无法触发的情况

src/routers/chat.py

@@ -30,7 +30,7 @@ async def chat_stream(request: ChatRequest):
     * `thread_id`: (可选) 现有项目的唯一标识。若不传，系统将自动分配并返回。
     * `checkpoint_id`: (可选) 历史快照 ID。
     * `config_params`: (可选) 对话配置参数
-    * `require_suggestion`: (可选) 是否需要建议按钮
+    * `require_suggestion`: (可选) 是否需要建议按钮,需要建议的频率，0-1的浮点数
     * `use_report`: (可选) 是否需要使用report功能 true/false
 
 
@@ -199,25 +199,30 @@ async def chat_stream(request: ChatRequest):
                 namespace, channel, payload = event
                 # 路由更新
                 if event[1] == "updates":
-                    if isinstance(payload, dict):
-                        for node_name, update_content in payload.items():
+                    namespace, _, payload = event
+
+                    if isinstance(payload, dict):
+                        for update_node, update_content in payload.items():
+
+                            # 处理 reducer（Overwrite / Append）
+                            if isinstance(update_content, dict):
+                                for k, v in update_content.items():
+                                    if hasattr(v, "value"):  # Overwrite(...)
+                                        update_content[k] = v.value
 
-                            # 将 LangChain Message 转为可 JSON 序列化
                             if isinstance(update_content, dict) and "messages" in update_content:
                                 msgs = []
                                 for m in update_content["messages"]:
                                     msgs.append({
                                         "type": m.__class__.__name__,
                                         "content": getattr(m, "content", ""),
-                                        "tool_calls": getattr(m, "tool_calls", []),
+                                        "name": getattr(m, "name", None),
+                                        "tool_calls": getattr(m, "tool_calls", None),
                                     })
-                                update_content = {
-                                    **update_content,
-                                    "messages": msgs
-                                }
+                                update_content["messages"] = msgs
 
                             yield f"data: {json.dumps({
-                                "node": node_name,
+                                "node": "Supervisor",
                                 "type": "updates",
                                 "content": update_content,
                                 "is_delta": False,
@@ -245,6 +250,7 @@ async def chat_stream(request: ChatRequest):
                     else:
                         node_name = "Main"
                     message, metadata = payload
+                    is_not_research = node_name != 'Researcher'
                     node_name = metadata.get("langgraph_node", node_name)
                     # 3. 处理不同类型的 message
                     payload_out = {
@@ -257,7 +263,8 @@ async def chat_stream(request: ChatRequest):
                     }
 
                     if isinstance(message, AIMessageChunk):
-                        if node_name != 'Researcher' and not message.tool_call_chunks:
+                        # 节点不是research 并且 tool_call_chunks不为空的情况下，避免research的report工具使用custom发出的消息和message的消息重复了
+                        if is_not_research and node_name != 'Researcher' and message.tool_call_chunks:
                             payload_out.update({
                                 "type": "delta",
                                 "is_delta": True,