refactor: 替换管理员登录组件并更新会话管理

src/app/admin/(shell)/layout.tsx

@@ -1,5 +1,5 @@
 import { AdminShell } from "@/components/admin/admin-shell";
-import { AdminShellAuthGate } from "@/components/admin/admin-shell-auth-gate";
+import { ShellAuthGate } from "@/components/admin/auth-gate";
 
 export default function AdminShellLayout({
   children,
@@ -7,8 +7,8 @@ export default function AdminShellLayout({
   children: React.ReactNode;
 }) {
   return (
-    <AdminShellAuthGate>
+    <ShellAuthGate>
       <AdminShell>{children}</AdminShell>
-    </AdminShellAuthGate>
+    </ShellAuthGate>
   );
 }

src/app/admin/login/page.tsx

@@ -1,6 +1,6 @@
 import type { Metadata } from "next";
 
-import { AdminLoginForm } from "@/components/admin/admin-login-form";
+import { LoginForm } from "@/components/admin/login-form";
 import { authModuleMeta } from "@/modules/auth/meta";
 
 export const metadata: Metadata = {
@@ -8,5 +8,5 @@ export const metadata: Metadata = {
 };
 
 export default function AdminLoginPage() {
-  return <AdminLoginForm />;
+  return <LoginForm />;
 }