first commit

src/app/(public)/join/page.tsx

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+import type {Metadata} from 'next';
+import {LoginSplit} from '@/features/auth/components/LoginSplit';
+import {JoinForm} from '@/features/auth/components/JoinForm';
+
+export const metadata: Metadata = {
+  title: 'Join your team',
+};
+
+/**
+ * Where an invitation code is redeemed. Public — see PUBLIC_PATHS in proxy.ts —
+ * because the person here has no account yet; that is the point of the page.
+ * Sits in the (public) group with /login and shares its frame.
+ */
+export default function JoinPage() {
+  return (
+    <LoginSplit
+      title="Join your team"
+      description="Enter the invitation code your manager gave you, then choose your own password. Nobody else ever sees it."
+    >
+      <JoinForm />
+    </LoginSplit>
+  );
+}