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/e2e/tests/team-accounts/team-accounts.spec.ts

@@ -88,7 +88,7 @@ test.describe('Team Accounts', () => {
     await teamAccounts.createTeam();
 
     await teamAccounts.openAccountsSelector();
-    await page.click('[data-test="create-team-account-trigger"]');
+    await page.click('[data-test="create-team-trigger"]');
 
     await teamAccounts.tryCreateTeam('billing');
 
@@ -202,7 +202,7 @@ test.describe('Team Accounts', () => {
 
     // Use non-Latin name to trigger the slug field visibility
     await teamAccounts.openAccountsSelector();
-    await page.click('[data-test="create-team-account-trigger"]');
+    await page.click('[data-test="create-team-trigger"]');
 
     await page.fill(
       '[data-test="create-team-form"] [data-test="team-name-input"]',