feat: add WebAgent support for streaming and notifications

app/agent/tools/base.py

@@ -612,13 +612,30 @@ class MoviePilotTool(BaseTool, metaclass=ABCMeta):
 
         return False
 
+    async def send_notification_message(self, notification: Notification) -> None:
+        """
+        发送工具通知消息。
+
+        WebAgent 渠道没有后端模块实例，前端流式面板通过 Agent 上下文中的
+        回调直接接收通知；其它渠道继续走统一消息链。
+        """
+        callback = self._agent_context.get("notification_callback")
+        if (
+            self._channel == MessageChannel.WebAgent.value
+            and callable(callback)
+        ):
+            callback(notification)
+            return
+
+        await ToolChain().async_post_message(notification)
+
     async def send_tool_message(
         self, message: str, title: str = "", image: Optional[str] = None
     ) -> None:
         """
         发送工具消息
         """
-        await ToolChain().async_post_message(
+        await self.send_notification_message(
             Notification(
                 channel=self._channel,
                 source=self._source,

app/agent/tools/impl/send_local_file.py

@@ -5,7 +5,7 @@ from typing import Optional, Type
 
 from pydantic import BaseModel, Field, model_validator
 
-from app.agent.tools.base import MoviePilotTool, ToolChain
+from app.agent.tools.base import MoviePilotTool
 from app.agent.tools.tags import ToolTag
 from app.log import logger
 from app.schemas import Notification, NotificationType
@@ -96,7 +96,7 @@ class SendLocalFileTool(MoviePilotTool):
             resolved_path,
         )
 
-        await ToolChain().async_post_message(
+        await self.send_notification_message(
             Notification(
                 channel=channel,
                 source=self._source,

app/agent/tools/impl/send_voice_message.py

@@ -4,7 +4,7 @@ from typing import Optional, Type
 from pydantic import BaseModel, Field
 
 from app.agent.llm.capability import AgentCapabilityManager
-from app.agent.tools.base import MoviePilotTool, ToolChain
+from app.agent.tools.base import MoviePilotTool
 from app.agent.tools.tags import ToolTag
 from app.core.config import settings
 from app.log import logger
@@ -86,7 +86,7 @@ class SendVoiceMessageTool(MoviePilotTool):
             f"use_voice={used_voice}, text_len={len(message)}"
         )
 
-        await ToolChain().async_post_message(
+        await self.send_notification_message(
             Notification(
                 channel=self._channel,
                 source=self._source,