🎛️ feat(dashboard): add per-panel enable switches & conditional backend payload

Backend:
• ConsoleSetting
  - Introduce `ApiInfoEnabled`, `UptimeKumaEnabled`, `AnnouncementsEnabled`, `FAQEnabled` (default true).
• misc.GetStatus
  - Refactor to build response map dynamically.
  - Return the four *_enabled flags.
  - Only append `api_info`, `announcements`, `faq` when their respective flags are true.

Frontend:
• Detail page
  - Remove all `self_use_mode_enabled` checks.
  - Render API, Announcement, FAQ and Uptime panels based on the new *_enabled flags.
• Dashboard → Settings
  - Added `Switch` controls in:
    · SettingsAPIInfo.js
    · SettingsAnnouncements.js
    · SettingsFAQ.js
    · SettingsUptimeKuma.js
  - Each switch persists its state via `/api/option` to the corresponding
    `console_setting.<panel>_enabled` key and reflects current status on load.
  - DashboardSetting.js now initialises and refreshes the four *_enabled keys so
    child components receive accurate panel states.

Fixes:
• Switches previously defaulted to “on” because *_enabled keys were missing.
  They are now included, ensuring correct visual state when panels are disabled.

No breaking changes; existing functionality remains untouched aside from the
new per-panel visibility control.

web/src/pages/Setting/Dashboard/SettingsAnnouncements.js

@@ -8,7 +8,8 @@ import {
   Empty,
   Divider,
   Modal,
-  Tag
+  Tag,
+  Switch
 } from '@douyinfe/semi-ui';
 import {
   IllustrationNoResult,
@@ -47,6 +48,9 @@ const SettingsAnnouncements = ({ options, refresh }) => {
   const [pageSize, setPageSize] = useState(10);
   const [selectedRowKeys, setSelectedRowKeys] = useState([]);
 
+  // 面板启用状态
+  const [panelEnabled, setPanelEnabled] = useState(true);
+
   const typeOptions = [
     { value: 'default', label: t('默认') },
     { value: 'ongoing', label: t('进行中') },
@@ -294,6 +298,30 @@ const SettingsAnnouncements = ({ options, refresh }) => {
     }
   }, [options['console_setting.announcements'], options.Announcements]);
 
+  useEffect(() => {
+    const enabledStr = options['console_setting.announcements_enabled'];
+    setPanelEnabled(enabledStr === undefined ? true : enabledStr === 'true' || enabledStr === true);
+  }, [options['console_setting.announcements_enabled']]);
+
+  const handleToggleEnabled = async (checked) => {
+    const newValue = checked ? 'true' : 'false';
+    try {
+      const res = await API.put('/api/option/', {
+        key: 'console_setting.announcements_enabled',
+        value: newValue,
+      });
+      if (res.data.success) {
+        setPanelEnabled(checked);
+        showSuccess(t('设置已保存'));
+        refresh?.();
+      } else {
+        showError(res.data.message);
+      }
+    } catch (err) {
+      showError(err.message);
+    }
+  };
+
   const handleBatchDelete = () => {
     if (selectedRowKeys.length === 0) {
       showError('请先选择要删除的系统公告');
@@ -350,6 +378,12 @@ const SettingsAnnouncements = ({ options, refresh }) => {
             {t('保存设置')}
           </Button>
         </div>
+
+        {/* 启用开关 */}
+        <div className="order-1 md:order-2 flex items-center gap-2">
+          <Switch checked={panelEnabled} onChange={handleToggleEnabled} />
+          <Text>{panelEnabled ? t('已启用') : t('已禁用')}</Text>
+        </div>
       </div>
     </div>
   );