feat(04-02): restyle RecoveryBanner with design tokens and update NeedsAttention label

- Replace all hardcoded Tailwind colors with CSS custom properties (--warn, --warn-soft, --text, --muted, --panel-soft, --success, --danger, --muted-strong)
- Use rounded-[10px] instead of rounded-lg for design system consistency
- Add aria-label on dismiss button for accessibility
- Update NeedsAttention label to 'Needs Your Attention' in en.ts and zh.ts

src/renderer/i18n/en.ts

@@ -558,7 +558,7 @@ export const en: Record<string, string> = {
   "dash.workforce": "Workforce",
   "dash.recentActivity": "Recent Activity",
   "dash.infrastructure": "Infrastructure",
-  "dash.needsAttentionSection": "Needs Attention",
+  "dash.needsAttentionSection": "Needs Your Attention",
   "dash.daysLeft": "{0} days left",
   "dash.tasksComplete": "{0}/{1} tasks complete",
   "dash.people": "People",

src/renderer/i18n/zh.ts

@@ -558,7 +558,7 @@ export const zh: Record<string, string> = {
   "dash.workforce": "工作力",
   "dash.recentActivity": "最近活动",
   "dash.infrastructure": "基础设施",
-  "dash.needsAttentionSection": "需要关注",
+  "dash.needsAttentionSection": "需要您的关注",
   "dash.daysLeft": "剩余 {0} 天",
   "dash.tasksComplete": "{0}/{1} 任务完成",
   "dash.people": "人员",