feat(rdp): 新增 RDP 远程桌面/SMB/账单同步能力 + 清理编译产物

主要变更：
- RDP 远程桌面：新增 backend/pkg/rdp（RDP 引擎 + credssp/display/rle/trace）、
  backend/controller/rdp*（连接/凭证/文件/会话/实时）、frontend RDP 组件与 API
- Windows SMB 文件传输：backend/pkg/winsmb
- 云账单同步：backend/pkg/billingsync + billing_sync/aliyun_billing，前端账单详情
- Agent CLI Kubernetes 工具：kubernetes_action/get、pod_execute/logs
- 服务器导入助手：server_import_helpers、ImportCredentialSettings
- 国际化与组件重构（cloud/deploy/monitor/server/system 等多模块）
- 清理编译产物二进制：移除 backend/server、backend/agent/bin/aiops-agent-*
- .gitignore：新增 backend/agent/ 与 .cache/（避免 334MB go-build 缓存误入库）

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/layout/Sidebar.tsx

@@ -22,9 +22,7 @@ import {
   Shield,
   Users,
   Network,
-  CloudCog,
   Globe,
-  MapPin,
   Key,
   Brain,
   Activity,
@@ -65,10 +63,8 @@ const menuItems: MenuItem[] = [
     id: 'assets', name: '资产管理', labelKey: 'menu.assets', icon: Server, permission: 'server:view',
     children: [
       { id: 'servers', name: '服务器管理', labelKey: 'menu.servers', icon: Database, path: '/servers', permission: 'server:view' },
-      { id: 'cloud-accounts', name: '云账号管理', labelKey: 'menu.cloudAccounts', icon: Key, path: '/cloud-accounts', permission: 'cloud:account' },
+      { id: 'cloud-accounts', name: '多云账号', labelKey: 'menu.cloudAccounts', icon: Key, path: '/cloud-accounts', permission: 'cloud:account' },
       { id: 'domains', name: '域名管理', labelKey: 'menu.domains', icon: Globe, path: '/domains', permission: 'cloud:domain' },
-      { id: 'regions', name: '区域管理', labelKey: 'menu.regions', icon: MapPin, path: '/regions', permission: 'cloud:account' },
-      { id: 'platforms', name: '云平台', labelKey: 'menu.platforms', icon: CloudCog, path: '/platforms', permission: 'cloud:account' },
       { id: 'cloud-billing', name: '云账单', labelKey: 'menu.cloudBilling', icon: BarChart3, path: '/cloud-billing', permission: 'cloud:billing' },
     ],
   },
@@ -148,7 +144,7 @@ const menuItems: MenuItem[] = [
     children: [
       { id: 'ai-assistant', name: '智能助手', labelKey: 'menu.aiAssistant', icon: Bot, path: '/ai-assistant', permission: 'aiops:assistant' },
       { id: 'ai-alert-analyzer', name: '告警分析', labelKey: 'menu.aiAlertAnalyzer', icon: AlertTriangle, path: '/ai-alert-analyzer', permission: 'aiops:analysis' },
-      { id: 'ai-predictive', name: '容量预测', labelKey: 'menu.aiPredictive', icon: BarChart3, path: '/ai-predictive', permission: 'aiops:forecast' },
+      { id: 'ai-predictive', name: '预测分析', labelKey: 'menu.aiPredictive', icon: BarChart3, path: '/ai-predictive', permission: 'aiops:forecast' },
       { id: 'ai-agent-cli', name: 'Agent CLI', labelKey: 'menu.aiAgentCli', icon: Terminal, path: '/ai-agent-cli', permission: 'aiops:agent-cli' },
       { id: 'ai-llm-config', name: '大模型设置', labelKey: 'menu.aiLlmConfig', icon: Settings, path: '/ai-llm-config', permission: 'aiops:llm-config' },
     ],
@@ -351,8 +347,8 @@ export function Sidebar() {
   // Listen for keyboard shortcut
   useEffect(() => {
     const handler = () => toggleSidebar();
-    window.addEventListener('toggle-sidebar' as any, handler);
-    return () => window.removeEventListener('toggle-sidebar' as any, handler);
+    window.addEventListener('toggle-sidebar', handler);
+    return () => window.removeEventListener('toggle-sidebar', handler);
   }, [toggleSidebar]);
 
   // F3: 按权限过滤菜单（递归）