feat: add permission-based access control and improve alert table UI

- Implement PermissionGuard component for route-level permission enforcement
- Add tree-based permission checkbox group in role management popup
- Gate SSE connection, unread count fetch, and rule edit actions on user permissions
- Add skip401Refresh option and auto token refresh on 401 response
- Improve alert table with fixed columns, explicit widths, and text ellipsis
- Add i18n entries for permission guide and rule menu descriptions (en/zh)
- Add expo-api nginx proxy configuration
- Add .claude to .gitignore

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/locales/en_US/menu.ts

@@ -7,6 +7,14 @@ export default {
   'menu.rules': 'Rules',
   'menu.rule': 'Rule',
   'menu.rules.desc': 'Manage Rules',
+  'menu.rules.desc2':
+    'Add, edit, enable/disable, delete, and clone rules. View Rules will be selected automatically.',
+  'menu.rules.edit.badge': 'Write access',
+  'menu.rules.edit': 'Manage Rules',
+  'menu.rules.view.badge': 'Read only',
+  'menu.rules.view': 'View Rules',
+  'menu.rules.view.desc':
+    'Enter Rule Management and view rule settings. No create, edit, clone, or delete actions.',
   'menu.rules.largeTradeLots': 'Large Trade (Lots)',
   'menu.rules.largeTradeLots.desc':
     'Monitor trades with lots exceeding threshold',