feat: add local settings

src/app/admin/page.tsx

@@ -50,7 +50,6 @@ interface SiteConfig {
   Announcement: string;
   SearchDownstreamMaxPage: number;
   SiteInterfaceCacheTime: number;
-  SearchResultDefaultAggregate: boolean;
 }
 
 // 视频源数据类型
@@ -948,7 +947,6 @@ const SiteConfigComponent = ({ config }: { config: AdminConfig | null }) => {
     Announcement: '',
     SearchDownstreamMaxPage: 1,
     SiteInterfaceCacheTime: 7200,
-    SearchResultDefaultAggregate: false,
   });
   // 保存状态
   const [saving, setSaving] = useState(false);
@@ -1094,45 +1092,6 @@ const SiteConfigComponent = ({ config }: { config: AdminConfig | null }) => {
         />
       </div>
 
-      {/* 默认按标题和年份聚合 */}
-      <div className='flex items-center justify-between'>
-        <label
-          className={`text-gray-700 dark:text-gray-300 ${
-            isD1Storage ? 'opacity-50' : ''
-          }`}
-        >
-          搜索结果默认按标题和年份聚合
-          {isD1Storage && (
-            <span className='ml-2 text-xs text-gray-500 dark:text-gray-400'>
-              (D1 环境下不可修改)
-            </span>
-          )}
-        </label>
-        <button
-          onClick={() =>
-            !isD1Storage &&
-            setSiteSettings((prev) => ({
-              ...prev,
-              SearchResultDefaultAggregate: !prev.SearchResultDefaultAggregate,
-            }))
-          }
-          disabled={isD1Storage}
-          className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-offset-2 ${
-            siteSettings.SearchResultDefaultAggregate
-              ? 'bg-green-600'
-              : 'bg-gray-200 dark:bg-gray-700'
-          } ${isD1Storage ? 'opacity-50 cursor-not-allowed' : ''}`}
-        >
-          <span
-            className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
-              siteSettings.SearchResultDefaultAggregate
-                ? 'translate-x-6'
-                : 'translate-x-1'
-            }`}
-          />
-        </button>
-      </div>
-
       {/* 操作按钮 */}
       <div className='flex justify-end'>
         <button