Restore UI functionalities and clean up dependencies

backendia/dashboard/node_modules/next/dist/build/templates/app-page.d.ts

@@ -0,0 +1,13 @@
+import type { IncomingMessage, ServerResponse } from 'node:http';
+import { AppPageRouteModule } from '../../server/route-modules/app-page/module.compiled';
+import type { RequestMeta } from '../../server/request-meta';
+export declare const __next_app__: {
+    require: (id: string | number) => unknown;
+    loadChunk: (id: string | number) => Promise<unknown>;
+};
+export * from '../../server/app-render/entry-base';
+export declare const routeModule: AppPageRouteModule;
+export declare function handler(req: IncomingMessage, res: ServerResponse, ctx: {
+    waitUntil?: (prom: Promise<void>) => void;
+    requestMeta?: RequestMeta;
+}): Promise<void | null>;