refactor(web): Panel 抽取全面完成 — 三個整合頁面解決雙重 AppLayout

/observability: AppsPanel + ServicesPanel (共 5/5 Tab 完成)
/automation: AutoRepairPanel + NeuralCommandPanel + DriftPanel (3/3)
/operations: DeploymentsPanel + TicketsPanel + CostPanel + ActionLogsPanel + BillingPanel (5/5)

原始頁面全部精簡為 AppLayout + Panel，零雙重 Layout。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/src/components/panels/AutoRepairPanel.tsx

@@ -215,7 +215,7 @@ function IncidentEvalRow({
                   ? <CheckCircle2 className="w-4 h-4 text-status-healthy" />
                   : <XCircle className="w-4 h-4 text-status-critical" />}
                 <span className={cn('text-sm font-body font-bold', result.success ? 'text-status-healthy' : 'text-status-critical')}>
-                  {result.success ? t('execSuccess', { ms: result.execution_time_ms }) : t('execFailed', { error: result.error })}
+                  {result.success ? t('execSuccess', { ms: result.execution_time_ms }) : t('execFailed', { error: result.error ?? '' })}
                 </span>
               </div>
               {result.executed_steps.length > 0 && (

apps/web/src/components/panels/index.ts

@@ -2,14 +2,10 @@
  * Panel 元件匯出
  * Sprint 5: 供整合頁面使用的無 AppLayout 版本
  *
- * 已抽取:
- * - MonitoringPanel (from /monitoring)
- *
- * 待抽取 (暫時用 lazy import 原始頁面):
- * - APMPanel, ErrorsPanel, AppsPanel, ServicesPanel
- * - AutoRepairPanel, NeuralCommandPanel, DriftPanel
- * - DeploymentsPanel, TicketsPanel, CostPanel, ActionLogsPanel, BillingPanel
- * - SecurityPanel, CompliancePanel
+ * 已抽取 (2026-04-09 全部完成):
+ * - /observability: MonitoringPanel, ApmPanel, ErrorsPanel, AppsPanel, ServicesPanel
+ * - /automation: AutoRepairPanel, NeuralCommandPanel, DriftPanel
+ * - /operations: DeploymentsPanel, TicketsPanel, CostPanel, ActionLogsPanel, BillingPanel
  */
 
 export { MonitoringPanel } from './MonitoringPanel'