fix agent tools

app/agent/tools/impl/send_message.py

@@ -1,16 +1,26 @@
 """发送消息工具"""
 
-from typing import Optional
+from typing import Optional, Type
+
+from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
 from app.log import logger
 
 
+class SendMessageInput(BaseModel):
+    """发送消息工具的输入参数模型"""
+    explanation: str = Field(..., description="Clear explanation of why this tool is being used in the current context")
+    message: str = Field(..., description="The message content to send to the user (should be clear and informative)")
+    message_type: Optional[str] = Field("info", description="Type of message: 'info' for general information, 'success' for successful operations, 'warning' for warnings, 'error' for error messages")
+
+
 class SendMessageTool(MoviePilotTool):
     name: str = "send_message"
-    description: str = "发送消息通知，向用户发送操作结果或重要信息。"
+    description: str = "Send notification message to the user through configured notification channels (Telegram, Slack, WeChat, etc.). Used to inform users about operation results, errors, or important updates."
+    args_schema: Type[BaseModel] = SendMessageInput
 
-    async def _arun(self, message: str, explanation: str, message_type: Optional[str] = "info", **kwargs) -> str:
+    async def _arun(self, message: str, message_type: Optional[str] = None, **kwargs) -> str:
         logger.info(f"执行工具: {self.name}, 参数: message={message}, message_type={message_type}")
         try:
             self.send_tool_message(message, title=message_type)