feat: 更新静态资源代理文档，优化路由和插件集成，提升代码可读性和功能性

agent/app.ts

@@ -0,0 +1,5 @@
+import { App } from '../src/app.ts';
+import { useContextKey } from '@kevisual/context';
+export const app = useContextKey<App>('app', () => new App());
+
+export { createSkill, type Skill, tool } from '../src/app.ts';