feat(project): init

app/admin/page.tsx

@@ -0,0 +1,25 @@
+import NavigationShell from "@/components/navigation-shell";
+import AdminDashboard from "@/components/admin-dashboard";
+import { requireAdminUser, toPublicUser } from "@/lib/auth";
+import { getAdminSnapshot } from "@/lib/admin";
+
+export default async function AdminPage() {
+  const user = await requireAdminUser();
+  const publicUser = toPublicUser(user);
+  const snapshot = getAdminSnapshot();
+
+  if (!publicUser) {
+    throw new Error("Unable to resolve admin user.");
+  }
+
+  return (
+    <NavigationShell
+      currentUser={publicUser}
+      activePath="/admin"
+      title="管理后台"
+      description="配置用户角色与额度规则，让管理员无限额、普通用户受控。"
+    >
+      <AdminDashboard initialSnapshot={snapshot} />
+    </NavigationShell>
+  );
+}