Add full application structure with auth, dashboard, and Docker

- Add Dockerfile for production deployment
- Add authentication pages (login, signup)
- Add dashboard layout and navigation
- Add project pages with chat component
- Add shadcn/ui components
- Add Supabase client configuration
- Add middleware for auth protection
- Update next.config.ts for standalone output

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/middleware.ts

@@ -0,0 +1,12 @@
+import { type NextRequest } from 'next/server'
+import { updateSession } from '@/lib/supabase/middleware'
+
+export async function middleware(request: NextRequest) {
+  return await updateSession(request)
+}
+
+export const config = {
+  matcher: [
+    '/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)',
+  ],
+}