refactor(ai): AI助手优化和移除MCP插件

src/composables/index.ts

@@ -7,3 +7,6 @@ export { useTokenRefresh } from "./auth/useTokenRefresh";
 export { useLayout } from "./layout/useLayout";
 export { useLayoutMenu } from "./layout/useLayoutMenu";
 export { useDeviceDetection } from "./layout/useDeviceDetection";
+
+export { useAiAction } from "./useAiAction";
+export type { UseAiActionOptions, AiActionHandler } from "./useAiAction";