test(web): pin recorded Cordis browser timezone

.agents/notes/implemented/testing/2026-09-06-pr-ci-runner-temporary-storage.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write .agents/notes/implemented/testing/2026-09-06-pr-ci-runner-temporary-storage.md
-2026-09-06-pr-ci-runner-temporary-storage.md: e7ce6447c885119970e3777adab9b29e74cd6a97
-2026-09-06-pr-ci-runner-temporary-storage.zh.md: fe2ee2e07d3566398b3b09069ec593360c039bfc
+2026-09-06-pr-ci-runner-temporary-storage.md: 673d26cbe9ef29c0c316839f6d6cc042cf62fbe4
+2026-09-06-pr-ci-runner-temporary-storage.zh.md: 09938d15dfb631890f65b2b8de355d10d12431ff

.agents/notes/implemented/testing/2026-09-06-pr-ci-runner-temporary-storage.md

@@ -32,6 +32,8 @@ The two minimal PowerShell snapshots explicitly exclude unrelated inherited tool
 
 The persistent PowerShell test distinguishes the silence observation from command completion. It refreshes prompt evidence with empty submissions after `inferred_idle`, within the existing bound, and still requires exact `stdin_read` plus an independently written completion marker. A gated command proves that silence can occur before mutation; the mutation itself is never replayed.
 
+The Cordis browser-tool fixture pins its recorded `Asia/Shanghai` browser timezone instead of inheriting the runner timezone; the persisted user-message timezone remains asserted.
+
 ## Alternatives considered
 
 **Delete shared temporary files from a PR job.** Another runner may still own those files. Repository jobs must not reclaim a shared directory by pathname or age.

.agents/notes/implemented/testing/2026-09-06-pr-ci-runner-temporary-storage.zh.md

@@ -32,6 +32,8 @@ Inspector console 集成测试在启用后等待 Client 的 `Runtime.evaluate`
 
 持久化 PowerShell 测试将静默观察与命令完成区分开。在 `inferred_idle` 后，它在既有时间界限内通过空提交刷新提示符证据，仍要求精确的 `stdin_read` 以及独立写入的完成标记。带阻塞标记的命令证明静默可能先于修改完成；修改命令本身绝不重放。
 
+Cordis 浏览器工具夹具固定录制时的 `Asia/Shanghai` 浏览器时区，而不继承 runner 时区；持久化用户消息的时区断言保持不变。
+
 ## 考虑过的替代方案
 
 **由 PR 作业删除共享临时文件。** 其他 runner 可能仍在使用这些文件。仓库作业不得按路径或文件年龄回收共享目录。

apps/web/tests/cordis-tool-round.e2e.ts

@@ -18,7 +18,7 @@ import {
   captureStableAria, compareOrRefreshGolden, fixtureUserPrompts,
   launchWebScaffold, recordFixture, watchConsole, webSnapshotMode, type WebScaffold,
 } from './scaffold.ts'
-import { connectFreshWorkspace, expandOwningTurnProcess, newEnglishPage, saveFailureShot } from './support.ts'
+import { connectFreshWorkspace, expandOwningTurnProcess, saveFailureShot } from './support.ts'
 
 const FIXTURE = fileURLToPath(new URL('../../../snapshots/web/cordis-tool-round/session.v2.jsonl', import.meta.url))
 const UI_EXPECTED = fileURLToPath(new URL('../../../snapshots/web/cordis-tool-round/ui.expected.md', import.meta.url))
@@ -83,7 +83,8 @@ describe('web e2e: Cordis tools use their owned cards', () => {
       if (key === 'modelSelection') modelChanges.push(`${String(seq)}:${JSON.stringify(value)}`)
     })
     browser = await chromium.launch()
-    page = await newEnglishPage(browser)
+    // The persisted user-message fixture records this browser timezone.
+    page = await browser.newPage({ viewport: { width: 1680, height: 1000 }, locale: 'en-US', timezoneId: 'Asia/Shanghai' })
     page.on('websocket', (socket) => {
       socket.on('framereceived', (frame) => {
         const payload = String(frame.payload)