Add E2E tests for internationalization across multiple pages

- Implemented navigation.spec.ts to test language switching and translation of navigation elements.
- Created sessions-page.spec.ts to verify translations on the sessions page, including headers, status badges, and date formatting.
- Developed settings-page.spec.ts to ensure settings page content is translated and persists across sessions.
- Added skills-page.spec.ts to validate translations for skill categories, action buttons, and empty states.

ccw/frontend/src/locales/en/common.json

@@ -0,0 +1,180 @@
+{
+  "aria": {
+    "toggleNavigation": "Toggle navigation menu",
+    "refreshWorkspace": "Refresh workspace",
+    "switchToLightMode": "Switch to light mode",
+    "switchToDarkMode": "Switch to dark mode",
+    "userMenu": "User menu",
+    "actions": "Actions"
+  },
+  "actions": {
+    "save": "Save",
+    "cancel": "Cancel",
+    "delete": "Delete",
+    "edit": "Edit",
+    "create": "Create",
+    "refresh": "Refresh",
+    "loading": "Loading...",
+    "retry": "Retry",
+    "search": "Search...",
+    "searchIssues": "Search issues...",
+    "searchLoops": "Search loops...",
+    "clear": "Clear",
+    "close": "Close",
+    "copy": "Copy",
+    "view": "View",
+    "viewAll": "View All",
+    "update": "Update",
+    "add": "Add",
+    "new": "New",
+    "remove": "Remove",
+    "confirm": "Confirm",
+    "back": "Back",
+    "next": "Next",
+    "previous": "Previous",
+    "submit": "Submit",
+    "reset": "Reset",
+    "resetDesc": "Reset all user preferences to their default values. This cannot be undone.",
+    "resetConfirm": "Reset all settings to defaults?",
+    "resetToDefaults": "Reset to Defaults",
+    "enable": "Enable",
+    "disable": "Disable",
+    "expand": "Expand All",
+    "expandAll": "Expand All",
+    "collapse": "Collapse All",
+    "collapseAll": "Collapse All",
+    "filter": "Filter",
+    "filters": "Filters",
+    "clearFilters": "Clear filters",
+    "clearAll": "Clear all",
+    "select": "Select",
+    "selectAll": "Select All",
+    "deselectAll": "Deselect All"
+  },
+  "status": {
+    "active": "Active",
+    "inactive": "Inactive",
+    "pending": "Pending",
+    "inProgress": "In Progress",
+    "completed": "Completed",
+    "failed": "Failed",
+    "blocked": "Blocked",
+    "cancelled": "Cancelled",
+    "paused": "Paused",
+    "archived": "Archived",
+    "unknown": "Unknown",
+    "draft": "Draft",
+    "published": "Published",
+    "creating": "Creating...",
+    "deleting": "Deleting...",
+    "label": "Status",
+    "openIssues": "Open Issues"
+  },
+  "priority": {
+    "low": "Low",
+    "medium": "Medium",
+    "high": "High",
+    "critical": "Critical",
+    "label": "Priority"
+  },
+  "time": {
+    "seconds": "seconds",
+    "minutes": "minutes",
+    "hours": "hours",
+    "days": "days",
+    "weeks": "weeks",
+    "months": "months",
+    "years": "years",
+    "ago": "ago",
+    "justNow": "just now"
+  },
+  "buttons": {
+    "new": "New",
+    "create": "Create",
+    "edit": "Edit",
+    "delete": "Delete",
+    "save": "Save",
+    "cancel": "Cancel",
+    "confirm": "Confirm",
+    "retry": "Retry",
+    "refresh": "Refresh",
+    "close": "Close",
+    "back": "Back",
+    "next": "Next",
+    "submit": "Submit"
+  },
+  "form": {
+    "required": "Required",
+    "optional": "optional",
+    "placeholder": "Enter...",
+    "search": "Search...",
+    "select": "Select...",
+    "noResults": "No results found",
+    "loading": "Loading...",
+    "sessionId": "Session ID",
+    "title": "Title",
+    "description": "Description",
+    "sessionIdPlaceholder": "e.g., WFS-feature-auth",
+    "titlePlaceholder": "e.g., Authentication System",
+    "descriptionPlaceholder": "Brief description of the session"
+  },
+  "emptyState": {
+    "noData": "No data found",
+    "noResults": "No results found",
+    "noItems": "No items",
+    "createFirst": "Create your first item to get started",
+    "searchEmpty": "Try adjusting your search or filters",
+    "filterEmpty": "No items match your current filters"
+  },
+  "errors": {
+    "generic": "An error occurred",
+    "network": "Network error. Please check your connection.",
+    "timeout": "Request timed out. Please try again.",
+    "notFound": "Resource not found",
+    "unauthorized": "Unauthorized access",
+    "forbidden": "Access forbidden",
+    "validation": "Validation error",
+    "server": "Server error. Please try again later.",
+    "loadingFailed": "Failed to load data",
+    "loadFailed": "Failed to load data",
+    "saveFailed": "Failed to save",
+    "deleteFailed": "Failed to delete",
+    "updateFailed": "Failed to update",
+    "unknownError": "An unexpected error occurred"
+  },
+  "success": {
+    "saved": "Saved successfully",
+    "created": "Created successfully",
+    "updated": "Updated successfully",
+    "deleted": "Deleted successfully",
+    "copied": "Copied to clipboard"
+  },
+  "messages": {
+    "confirmDelete": "Are you sure you want to delete this item?",
+    "confirmArchive": "Are you sure you want to archive this item?",
+    "unsavedChanges": "You have unsaved changes. Are you sure you want to leave?",
+    "noPermission": "You don't have permission to perform this action"
+  },
+  "stats": {
+    "todayActivity": "Today's Activity",
+    "totalCommands": "Total Commands",
+    "totalSkills": "Total Skills",
+    "categories": "Categories"
+  },
+  "dialog": {
+    "createSession": "Create New Session",
+    "createSessionDesc": "Create a new workflow session to track your development tasks.",
+    "deleteSession": "Delete Session",
+    "deleteConfirm": "Are you sure you want to delete this session? This action cannot be undone."
+  },
+  "help": {
+    "title": "Help & Documentation",
+    "description": "Learn how to use CCW Dashboard and get the most out of your workflows",
+    "support": {
+      "title": "Need more help?",
+      "description": "Check the project documentation or reach out for support.",
+      "documentation": "Documentation",
+      "tutorials": "Tutorials"
+    }
+  }
+}