fix(web): keep trajectory toolbar Duration/Turns/Calls/Export untranslated

Show the four toolbar terms in English even in the Simplified Chinese
dictionary, including their tooltips, aria labels, and the export failure
message, and update the pinned-zh specs to match.

packages/client/ui-trajectory/src/client/index.ts

@@ -55,7 +55,7 @@ export function apply(ctx: Context): void {
           const response = await fetch(url)
           if (!response.ok) {
             const detail = await response.text().catch(() => '')
-            throw new Error(`导出失败：HTTP ${response.status}${detail === '' ? '' : ` ${detail}`}`)
+            throw new Error(`Export failed: HTTP ${response.status}${detail === '' ? '' : ` ${detail}`}`)
           }
           downloadBlob(await response.blob(), sessionLogZipFilename(sessionId))
         },

packages/client/ui-trajectory/src/client/locales.ts

@@ -35,20 +35,20 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
 export const zh: Record<TrajectoryKey, string> = {
   'view.trajectory': '轨迹',
   'toolbar.aria': '轨迹工具栏',
-  'toolbar.duration': '时长',
-  'toolbar.useActualDuration': '使用实际时长',
-  'toolbar.useEqualWidth': '使用等宽时长',
+  'toolbar.duration': 'Duration',
+  'toolbar.useActualDuration': 'Use actual duration',
+  'toolbar.useEqualWidth': 'Use equal-width operations',
   'toolbar.actualTime': '实际时间',
-  'toolbar.turns': '轮次',
-  'toolbar.expandTurns': '展开轮次',
-  'toolbar.collapseTurns': '折叠轮次',
-  'toolbar.calls': '调用',
-  'toolbar.expandCalls': '展开调用',
-  'toolbar.collapseCalls': '折叠调用',
-  'toolbar.export': '导出',
-  'toolbar.exportAria': '导出会话日志',
-  'toolbar.exporting': '导出中…',
-  'toolbar.exportTitle': '导出会话日志（ZIP，含子代理）',
+  'toolbar.turns': 'Turns',
+  'toolbar.expandTurns': 'Expand turns',
+  'toolbar.collapseTurns': 'Collapse turns',
+  'toolbar.calls': 'Calls',
+  'toolbar.expandCalls': 'Expand calls',
+  'toolbar.collapseCalls': 'Collapse calls',
+  'toolbar.export': 'Export',
+  'toolbar.exportAria': 'Export session log',
+  'toolbar.exporting': 'Exporting…',
+  'toolbar.exportTitle': 'Export session log (ZIP, includes subagents)',
   'toolbar.search': '搜索轨迹',
   'toolbar.searchPlaceholder': '搜索',
 }