修改登录逻辑

app/auth/login/page.tsx

@@ -29,6 +29,8 @@ export default async function LoginPage({
       configured={config.configured}
       message={message}
       missing={!config.configured && config.required ? config.missing : []}
+      alternateHref={loginHref("/auth/admin-login", next)}
+      alternateLabel="管理员登录"
     />
   );
 }
@@ -36,3 +38,7 @@ export default async function LoginPage({
 function singleParam(value: string | string[] | undefined): string | undefined {
   return Array.isArray(value) ? value[0] : value;
 }
+
+function loginHref(path: string, next: string): string {
+  return `${path}?next=${encodeURIComponent(next)}`;
+}