feat: add workflow management commands and utilities

- Implemented workflow installation, listing, and syncing commands in `workflow.ts`.
- Created utility functions for project root detection and package version retrieval in `project-root.ts`.
- Added update checker functionality to notify users of new package versions in `update-checker.ts`.
- Developed unit tests for project root utilities and update checker to ensure functionality and version comparison accuracy.

ccw/src/templates/dashboard-js/i18n.js

@@ -42,6 +42,8 @@ const i18n = {
     'header.recentProjects': 'Recent Projects',
     'header.browse': 'Browse...',
     'header.refreshWorkspace': 'Refresh workspace',
+    'header.checkUpdateNow': 'Check for updates now',
+    'header.autoUpdate': 'Auto-update check',
     'header.toggleTheme': 'Toggle theme',
     'header.language': 'Language',
     'header.cliStream': 'CLI Stream Viewer',
@@ -2391,6 +2393,8 @@ const i18n = {
     'header.recentProjects': '最近项目',
     'header.browse': '浏览...',
     'header.refreshWorkspace': '刷新工作区',
+    'header.checkUpdateNow': '立即检查更新',
+    'header.autoUpdate': '自动更新检查',
     'header.toggleTheme': '切换主题',
     'header.language': '语言',
     'header.cliStream': 'CLI 流式输出',