feat(i18n): integrate internationalization into sidebar, title bar, and settings components

- Added useI18n hook to Sidebar and TitleBar components for translation support.
- Updated sidebar navigation items to use translation keys instead of hardcoded labels.
- Enhanced TitleBar buttons with localized titles for minimize, maximize, and close actions.
- Expanded i18n constants to include new namespaces for sidebar and login.
- Implemented translation messages for sidebar, settings, and login components in English, Chinese, and Japanese.
- Refactored Knowledge and Skills pages to utilize useLocale for locale management.
- Updated Login page to display localized text for form labels, placeholders, and error messages.
- Enhanced Account and General settings panels with localized titles and descriptions.
- Modified SettingMenu to use translation keys for menu items.

src/router/routes.ts

@@ -12,20 +12,26 @@ export type WorkspacePath = Exclude<AppPath, '/login'>;
 
 export type NavItem = {
   path: WorkspacePath;
-  label: string;
-  description: string;
+  labelKey:
+    | 'sidebar.home'
+    | 'sidebar.knowledge'
+    | 'sidebar.models'
+    | 'sidebar.skills'
+    | 'sidebar.cron'
+    | 'sidebar.scripts'
+    | 'sidebar.settings';
 };
 
 export const DEFAULT_PATH: WorkspacePath = '/home';
 
 export const NAV_ITEMS: NavItem[] = [
-  { path: '/home', label: '首页', description: '对话与首页入口' },
-  { path: '/knowledge', label: '知识库', description: '知识库与内容管理' },
-  { path: '/agents', label: '模型', description: '智能体与提供方' },
-  { path: '/skills', label: '技能', description: '技能与能力集' },
-  { path: '/cron', label: '定时任务', description: '计划与调度' },
-  { path: '/scripts', label: '脚本', description: '脚本与自动化' },
-  { path: '/setting', label: '设置', description: '应用配置' },
+  { path: '/home', labelKey: 'sidebar.home' },
+  { path: '/knowledge', labelKey: 'sidebar.knowledge' },
+  { path: '/agents', labelKey: 'sidebar.models' },
+  { path: '/skills', labelKey: 'sidebar.skills' },
+  { path: '/cron', labelKey: 'sidebar.cron' },
+  { path: '/scripts', labelKey: 'sidebar.scripts' },
+  { path: '/setting', labelKey: 'sidebar.settings' },
 ];
 
 export function normalizeWorkspacePath(pathname: string): WorkspacePath {