refactor: 简化 AgentScope 运行时模块与 prompt 系统

backend/src/schemas/messages/chat_message.py

@@ -1,11 +1,10 @@
 from __future__ import annotations
 
 from datetime import datetime
-from decimal import Decimal
 from typing import ClassVar
 from uuid import UUID
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, ConfigDict
 
 from ..agent import AgentType, ToolAgentOutput, WorkerAgentOutput
 
@@ -20,7 +19,7 @@ class UserMessageAttachments(BaseModel):
 
 class AgentChatMessageMetadata(BaseModel):
     model_config: ClassVar[ConfigDict] = ConfigDict(extra="allow")
-
+    run_id: str
     agent_type: AgentType | None = None
     user_message_attachments: UserMessageAttachments | None = None
     tool_agent_output: ToolAgentOutput | None = None