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

apps/dev-tool/app/emails/lib/email-tester-form-schema.ts

@@ -1,4 +1,4 @@
-import { z } from 'zod';
+import * as z from 'zod';
 
 export const EmailTesterFormSchema = z.object({
   username: z.string().min(1),