chore: convert submodules to standard directories for true monorepo structure

vibn-frontend/index.js

@@ -0,0 +1,26 @@
+const { onRequest } = require('firebase-functions/v2/https');
+const next = require('next');
+
+const app = next({
+  dev: false,
+  conf: { distDir: '.next' },
+});
+
+const handle = app.getRequestHandler();
+
+// Prepare the app on module load
+const prepared = app.prepare();
+
+exports.nextjsFunc = onRequest(
+  {
+    region: 'us-central1',
+    memory: '2GiB',
+    timeoutSeconds: 300,
+    maxInstances: 10,
+    minInstances: 0,
+  },
+  async (req, res) => {
+    await prepared;
+    return handle(req, res);
+  }
+);