Next.js Supabase V3 (#463)

Version 3 of the kit:
- Radix UI replaced with Base UI (using the Shadcn UI patterns)
- next-intl replaces react-i18next
- enhanceAction deprecated; usage moved to next-safe-action
- main layout now wrapped with [locale] path segment
- Teams only mode
- Layout updates
- Zod v4
- Next.js 16.2
- Typescript 6
- All other dependencies updated
- Removed deprecated Edge CSRF
- Dynamic Github Action runner

packages/supabase/src/hooks/use-sign-up-with-email-password.ts

@@ -49,7 +49,7 @@ export function useSignUpWithEmailAndPassword() {
         throw new WeakPasswordError(errorObj.reasons ?? []);
       }
 
-      throw response.error.message;
+      throw response.error;
     }
 
     const user = response.data?.user;