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/web/app/[locale]/docs/_components/docs-navigation-collapsible.tsx

@@ -0,0 +1,32 @@
+'use client';
+
+import { usePathname } from 'next/navigation';
+
+import { Cms } from '@kit/cms';
+import { Collapsible } from '@kit/ui/collapsible';
+import { cn, isRouteActive } from '@kit/ui/utils';
+
+export function DocsNavigationCollapsible(
+  props: React.PropsWithChildren<{
+    node: Cms.ContentItem;
+    prefix: string;
+  }>,
+) {
+  const currentPath = usePathname();
+  const prefix = props.prefix;
+
+  const isChildActive = props.node.children.some((child) =>
+    isRouteActive(prefix + '/' + child.url, currentPath),
+  );
+
+  return (
+    <Collapsible
+      className={cn('group/collapsible', {
+        'group/active': isChildActive,
+      })}
+      defaultOpen={isChildActive ? true : !props.node.collapsed}
+    >
+      {props.children}
+    </Collapsible>
+  );
+}