T4: AnySearch 改为全局固定配置 + 修复外部服务弹窗 UI

frontend/src/api/index.ts

@@ -959,6 +959,10 @@ export const adminAPI = {
 
   checkAdminKnowledgeExtStatus: (id: string) => get<any>(`/admin/knowledge/external/services/${id}/status`),
 
+  getAdminAnySearchConfig: () => get<any>('/admin/knowledge/anysearch/config'),
+
+  saveAdminAnySearchConfig: (data: { api_key: string; is_enabled: boolean }) => post<any>('/admin/knowledge/anysearch/config', data),
+
   syncAdminKnowledge: (kbId: string, data: any) => post<any>(`/admin/knowledge/external/sync/${kbId}`, data),
 
   batchDeleteAdminKnowledge: (ids: string[]) => post<any>('/admin/knowledge/batch/delete', ids),