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/ui/src/shadcn/aspect-ratio.tsx

@@ -0,0 +1,22 @@
+import { cn } from '#lib/utils';
+
+function AspectRatio({
+  ratio,
+  className,
+  ...props
+}: React.ComponentProps<'div'> & { ratio: number }) {
+  return (
+    <div
+      data-slot="aspect-ratio"
+      style={
+        {
+          '--ratio': ratio,
+        } as React.CSSProperties
+      }
+      className={cn('relative aspect-(--ratio)', className)}
+      {...props}
+    />
+  );
+}
+
+export { AspectRatio };