fix(admin): resolve GET/PUT /admin/settings 404, videos.map crash, and remove legacy CMS sidebar link

backend/src/admin/admin.controller.ts

@@ -228,4 +228,18 @@ export class AdminController {
     await this.adminService.deleteDoctor(id);
     return { success: true };
   }
+
+  @Get('settings')
+  @ApiOperation({ summary: 'دریافت تنظیمات کلی سیستم' })
+  async getSettings() {
+    const data = await this.adminService.getSettings();
+    return { success: true, data };
+  }
+
+  @Put('settings')
+  @ApiOperation({ summary: 'بروزرسانی تنظیمات کلی سیستم' })
+  async updateSettings(@Body() body: Record<string, string>) {
+    const data = await this.adminService.updateSettings(body);
+    return { success: true, data };
+  }
 }

frontend/admin-panel/src/components/Sidebar.tsx

@@ -41,7 +41,6 @@ const menuGroups = [
       { icon: FileText, label: 'وبلاگ', path: '/blogs' },
       { icon: BookOpen, label: 'دانشنامه عمومی', path: '/wiki' },
       { icon: Video, label: 'مدیریت ویدئوها', path: '/videos' },
-      { icon: Image, label: 'مدیریت CMS قدیم', path: '/cms' },
     ]
   },
   {

frontend/admin-panel/src/pages/Videos.tsx

@@ -45,9 +45,22 @@ export default function Videos() {
     api.get('/videos', {
       params: { search: searchTerm, limit: 100 },
     }).then(res => {
-      if (isSubscribed) setVideos(res.data.data || res.data || []);
+      if (isSubscribed) {
+        const raw = res.data;
+        const videoList = Array.isArray(raw?.videos) 
+          ? raw.videos 
+          : Array.isArray(raw?.data?.videos)
+          ? raw.data.videos
+          : Array.isArray(raw?.data) 
+          ? raw.data 
+          : Array.isArray(raw) 
+          ? raw 
+          : [];
+        setVideos(videoList);
+      }
     }).catch(err => {
       console.error('Failed to fetch videos:', err);
+      if (isSubscribed) setVideos([]);
     }).finally(() => {
       if (isSubscribed) setIsLoading(false);
     });