Refactor: Implement DashboardLayout, fix mobile nav, and resolve scroll issues

app/api/auth/verify/route.ts

@@ -0,0 +1,24 @@
+import { NextResponse } from 'next/server';
+import { verifyOTP } from '@/lib/otp';
+import { cookies } from 'next/headers';
+
+export async function POST(req: Request) {
+  try {
+    const { code } = await req.json();
+    
+    if (verifyOTP(code)) {
+      // Set cookie
+      cookies().set('auth_token', 'true', { 
+        httpOnly: true,
+        secure: process.env.NODE_ENV === 'production',
+        maxAge: 60 * 60 * 24 * 7, // 1 week
+        path: '/'
+      });
+      return NextResponse.json({ success: true });
+    }
+    
+    return NextResponse.json({ error: 'Invalid Code' }, { status: 401 });
+  } catch (error) {
+    return NextResponse.json({ error: 'Invalid Request' }, { status: 400 });
+  }
+}