[codex] background route decision refresh (#370)

* background route decision refresh

* address route decision refresh review

* fix route decision refresh typing

src/web/i18n.supplement.ts

@@ -455,6 +455,7 @@ export const zhToEnSupplemental: Record<string, string> = {
   '生成已取消。': 'The build was canceled.',
   '生成已停止。': 'The build has stopped.',
   '生成中...': 'Generating...',
+  '已缓存': 'Cached',
   '失败': 'fail',
   '失败 (${countBy(\'failed\')})': 'Failure (${countBy(\'failed\')})',
   '失败避让': 'failure avoidance',
@@ -740,6 +741,7 @@ export const zhToEnSupplemental: Record<string, string> = {
   '自动重建': 'automatic rebuild',
   '自动重建完成（新增 ${createdRoutes} 条路由 / ${createdChannels} 个通道）': 'Automatic reconstruction completed (new ${createdRoutes} routes / ${createdChannels} channels)',
   '最大 Token 数': 'Maximum number of tokens',
+  '最近刷新': 'Last refreshed',
   '最近健康检查失败': 'Recent health check failed',
   '最近失败，优先避让（${RECENT_FAILURE_AVOID_SEC / 60} 分钟窗口）': 'Recent failure, priority avoidance (${RECENT_FAILURE_AVOID_SEC / 60} minute window)',
   '最近一次检查失败': 'The latest check failed',