The user chose Supabase and full system at once. They didn't answer the Tech Stack and Branding questions, but choosing Supabase implies Next.js. Let me re-read the full spec carefully and ask the remaining question.

Now let me check the existing Supabase integration and what shadcn components are available:

Let me check the debug logs and current state of the files to find the issue.

The error is clear: ContactSection uses onSubmit (an event handler) in a form, but it's being rendered as a Server Component. Let me check which components need "use client" directives.

Found the issue. ContactSection has an onSubmit event handler but is missing the "use client" directive. It's a Server Component by default in Next.js, but event handlers require a Client Component. Let me also check the other components that might have the same issue:

Now I see the issue clearly. The ContactSection component uses onSubmit={(e) => e.preventDefault()} on its form, but it doesn't have a "use client" directive at the top. In Next.js, components are Server Components by default, and event handlers like onSubmit are not allowed in Server Components. The fix is simple: add "use client" at the top of contact-section.tsx.

Right, I'm in plan mode. The fix is very simple and clear. Let me write a brief plan and exit immediately since this is a straightforward bug fix.