feat：统一节点进度事件

app/schemas/agent.py

@@ -16,7 +16,9 @@ class ResumeRequest(BaseModel):
 
 
 class AgentResult(BaseModel):
-    thread_id: str
+    conversation_id: str  # 当前聊天会话 ID
+    thread_id: str  # 当前任务 ID
+    message_id: str  # 本次用户输入的 ID，不是助手回复 ID
     status: Literal["completed", "waiting_for_input", "failed", "cancelled"]
     actions: list[Action] = Field(default_factory=list)
     answer: str | None = None

app/schemas/node_progress.py

@@ -0,0 +1,20 @@
+"""节点进度事件"""
+
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+NodeProgressStatus = Literal[
+    "started", "completed", "waiting_for_input", "failed", "cancelled"
+]
+
+
+class NodeProgress(BaseModel):
+    type: Literal["node_progress"] = "node_progress"  # 用于区分流中的事件类型
+    thread_id: str | None = None  # 任务 ID，独立运行节点时可以为空
+    message_id: str | None = None  # 当前用户输入 ID
+    execution_id: str  # 单次节点执行 ID，开始和结束共用
+    node: str  # 稳定的技术标识，供程序处理和排查
+    label: str | None = None  # 用户进度提示，缺省时不展示该节点
+    status: NodeProgressStatus  # 节点执行状态，不代表任务总体状态
+    duration_ms: float | None = Field(default=None, ge=0)  # 结束时的执行耗时