feat: 新增插件相关agent工具（查询插件、查询插件能力、运行插件命令）

app/agent/tools/impl/query_installed_plugins.py

@@ -0,0 +1,71 @@
+"""查询已安装插件工具"""
+
+import json
+from typing import Optional, Type
+
+from pydantic import BaseModel, Field
+
+from app.agent.tools.base import MoviePilotTool
+from app.core.plugin import PluginManager
+from app.log import logger
+
+
+class QueryInstalledPluginsInput(BaseModel):
+    """查询已安装插件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",
+    )
+
+
+class QueryInstalledPluginsTool(MoviePilotTool):
+    name: str = "query_installed_plugins"
+    description: str = (
+        "Query all installed plugins in MoviePilot. Returns a list of installed plugins with their ID, name, "
+        "description, version, author, running state, and other information. "
+        "Use this tool to discover what plugins are available before querying plugin capabilities or running plugin commands."
+    )
+    args_schema: Type[BaseModel] = QueryInstalledPluginsInput
+
+    def get_tool_message(self, **kwargs) -> Optional[str]:
+        """生成友好的提示消息"""
+        return "正在查询已安装插件"
+
+    async def run(self, **kwargs) -> str:
+        logger.info(f"执行工具: {self.name}")
+        try:
+            plugin_manager = PluginManager()
+            local_plugins = plugin_manager.get_local_plugins()
+            # 仅返回已安装的插件
+            installed_plugins = [plugin for plugin in local_plugins if plugin.installed]
+
+            if not installed_plugins:
+                return "当前没有已安装的插件"
+
+            plugins_list = []
+            for plugin in installed_plugins:
+                plugins_list.append(
+                    {
+                        "id": plugin.id,
+                        "plugin_name": plugin.plugin_name,
+                        "plugin_desc": plugin.plugin_desc,
+                        "plugin_version": plugin.plugin_version,
+                        "plugin_author": plugin.plugin_author,
+                        "state": plugin.state,
+                        "has_page": plugin.has_page,
+                    }
+                )
+
+            total_count = len(plugins_list)
+            result_json = json.dumps(plugins_list, ensure_ascii=False, indent=2)
+
+            if total_count > 50:
+                limited_plugins = plugins_list[:50]
+                limited_json = json.dumps(limited_plugins, ensure_ascii=False, indent=2)
+                return f"注意：共找到 {total_count} 个已安装插件，为节省上下文空间，仅显示前 50 个。\n\n{limited_json}"
+
+            return result_json
+        except Exception as e:
+            logger.error(f"查询已安装插件失败: {e}", exc_info=True)
+            return f"查询已安装插件时发生错误: {str(e)}"