fix: implement tool execution timeout handling and improve blocking call management

app/agent/tools/impl/_plugin_tool_utils.py

@@ -1,6 +1,5 @@
 """插件 Agent 工具共享辅助方法"""
 
-import asyncio
 import json
 import shutil
 from typing import Any, Optional
@@ -251,7 +250,9 @@ async def install_plugin_runtime(
             SystemConfigKey.UserInstalledPlugins, install_plugins
         )
 
-    await asyncio.to_thread(reload_plugin_runtime, plugin_id)
+    from app.agent.tools.base import run_agent_blocking
+
+    await run_agent_blocking("plugin", reload_plugin_runtime, plugin_id)
     return True, message or "插件安装成功", refreshed_only