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

.npmrc

@@ -3,9 +3,6 @@ dedupe-peer-dependents=true
 use-lockfile-v6=true
 resolution-mode=highest
 package-manager-strict=false
-public-hoist-pattern[]=*i18next*
-public-hoist-pattern[]=*eslint*
-public-hoist-pattern[]=*prettier*
 public-hoist-pattern[]=*require-in-the-middle*
 public-hoist-pattern[]=*import-in-the-middle*
 public-hoist-pattern[]=*pino*