diff --git a/AGENTS.md b/AGENTS.md
index eb0728dc..70b2627f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -50,6 +50,7 @@ HWLAB 是硬件实验室运行面和控制面项目。本文是 agent、指挥
 - G14 k3s 操作必须通过 UniDesk SSH route `G14:k3s` 执行，例如 `bun scripts/cli.ts ssh G14:k3s kubectl get pods -n hwlab-ci`；禁止使用 `ssh G14 k3s ...`。不要把 `/workspace/hwlab`、`/root/HWLAB`、D601 workspace、master-server checkout 或临时 clone 当作 G14 分支 source truth。
 - Runner 和指挥常用工作区是 `/workspace/hwlab`；进入仓库先检查分支与工作树状态，详见 [docs/reference/commander-collaboration.md](docs/reference/commander-collaboration.md)。
 - G14 CI/CD 由 `G14` source branch、G14 k3s Tekton 和 `G14-gitops` branch 驱动；需要构建、Playwright、check、发布预检或运行面验证时放到 G14 k3s/runner/CI/CD，不在 master server 跑重型验证。
+- G14/v0.2 远端验证必须用短连接触发后台 job、PipelineRun 或脚本任务，再用短连接轮询 status/tail/exit code；不要用 UniDesk SSH/tran 长连接等待 check、layout、Playwright、Tekton/Argo 或发布动作完整结束，细则见 [docs/reference/spec-v02-cicd.md](docs/reference/spec-v02-cicd.md)。
 - D601 发布/构建 worktree 纪律只适用于 legacy 路径回溯，不再作为当前 HWLAB 发布默认入口；当前入口见 [docs/reference/g14-gitops-cicd.md](docs/reference/g14-gitops-cicd.md)。
 - 交付路径按变更风险选择：单纯文档、CLI/helper 轻量变更直接提交并 push 到当前工作线的 source branch，G14 默认 `origin/G14`，`v0.2` 默认 `origin/v0.2`；业务代码、运行面、发布链路、Secret、权限、数据迁移、PROD 或其他高风险变更走 PR 工作流，PR base 必须匹配当前工作线，不能默认投向 `main`；默认不要合并自己的 PR，用户或指挥官明确授权且满足门禁时可按长期参考自合并，不要改 PROD、不要重启服务。
 - `DC-DCSN-P0-2026-003` / [pikasTech/HWLAB#78](https://github.com/pikasTech/HWLAB/issues/78) 是当前 M3 虚拟硬件可信闭环的上位约束；其他任务不得把 SOURCE、LOCAL、DRY-RUN、fixture 或前端状态误报为 M3 DEV-LIVE。
diff --git a/docs/reference/spec-v02-cicd.md b/docs/reference/spec-v02-cicd.md
index fae8ef8e..97f6aa90 100644
--- a/docs/reference/spec-v02-cicd.md
+++ b/docs/reference/spec-v02-cicd.md
@@ -134,6 +134,12 @@ Cloud Web 单元测试必须自动发现并执行 repo-owned `web/hwlab-cloud-we
 
 默认 v0.2 CI 不启动 Playwright、布局 smoke、移动端截图、旧 quick prompt 检查、旧 M3 evidence 检查或历史 DEV/D601 browser gate。这些检查只能作为显式人工诊断或专项验收命令存在，不能重新进入最小 CI/CD 关键路径。新增测试也必须只表达当前 v0.2 目标行为；发现旧 UI/旧路由/旧门禁断言阻碍当前目标时，删除旧断言而不是维护兼容分支。
 
+### 远端验证短连接规则
+
+G14 host、worktree、k3s 控制面或 pod 内的验证命令必须按短连接可见性设计。通过 UniDesk `ssh`/`tran` route 执行 `npm run web:check`、`npm run web:layout`、Playwright、Tekton/Argo 观察、镜像构建、发布等待或其他可能超过单次维护桥预算的动作时，不得让 SSH 连接长时间阻塞等待完整输出。标准做法是用一次短连接创建后台 job、PipelineRun、Tekton task 或显式脚本 job，把 stdout/stderr、exit code、开始/结束时间和关键元数据写入 `/tmp`、`.state` 或 CI artifact；随后用有界短连接轮询 `status`、`tail`、`exit.code`、TaskRun result 或 Argo summary。
+
+如果一次远端验证已经触发 `UNIDESK_SSH_RUNTIME_TIMEOUT`、日志尾部缺失、exit code 不可见或浏览器/CI 进度不可见，必须先把该验证改成后台 job 加短轮询，再继续排障或发布。禁止把 60s 维护桥断开当作测试失败、测试通过或外部依赖不可用；也禁止通过加大本地等待、重复长连接、全量日志 dump 或改回原生 SSH 绕过来处理。长期 CLI/CI 能力不足时，优先补 UniDesk CLI 的异步 job/status/tail 子命令，再用该入口完成验证。
+
 写 mirror 的一致性模型是 local-first、manual-flush。promotion task 只能持有 mirror/relay 写凭证，不持有 GitHub deploy key；GitHub deploy key 只存在于 `devops-infra` mirror/relay sync/flush 边界。mirror/relay 必须在本地 receive 期间完成 object closure、目标 branch allowlist、non-fast-forward 拒绝和 changed-path 最小校验；receive 成功后本地 ref 即为 Argo 可消费事实。flush 失败不得回滚已经 rollout 的本地 GitOps revision，但必须保留 pending/outbox 状态，下一次手动 flush 可重试并输出 last error，不得静默丢弃。
 
 ## 性能预算与回归判定
diff --git a/scripts/dev-cloud-workbench-smoke.mjs b/scripts/dev-cloud-workbench-smoke.mjs
index d30fe35f..a52e5d08 100644
--- a/scripts/dev-cloud-workbench-smoke.mjs
+++ b/scripts/dev-cloud-workbench-smoke.mjs
@@ -7,7 +7,6 @@ import {
   parseSmokeArgs,
   printSmokeHelp,
   runDevCloudWorkbenchMobileSmoke,
-  runDevCloudWorkbenchQuickPromptsFixtureSmoke,
   runDevCloudWorkbenchSmoke
 } from "./src/dev-cloud-workbench-smoke-lib.mjs";
 import { ensureNotRepoReportsPath, tempReportPath } from "./src/report-paths.mjs";
@@ -54,8 +53,6 @@ if (process.argv[1] && fileURLToPath(import.meta.url) === process.argv[1]) {
       ? printSmokeHelp()
       : args.mobile
         ? await runDevCloudWorkbenchMobileSmoke()
-      : args.mode === "quick-prompts-fixture"
-        ? await runDevCloudWorkbenchQuickPromptsFixtureSmoke()
       : await runDevCloudWorkbenchSmoke(process.argv.slice(2));
     const reportWrite = decideSmokeReportWrite(args, report);
     if (reportWrite.write) {
diff --git a/scripts/dev-cloud-workbench-smoke.test.mjs b/scripts/dev-cloud-workbench-smoke.test.mjs
index 14de83be..1bd850ee 100644
--- a/scripts/dev-cloud-workbench-smoke.test.mjs
+++ b/scripts/dev-cloud-workbench-smoke.test.mjs
@@ -7,11 +7,7 @@ import {
   classifyLiveDeploymentIdentity,
   classifyLiveWebAssetIdentity,
   parseSmokeArgs,
-  runDevCloudWorkbenchLayoutSmoke,
-  runDevCloudWorkbenchQuickPromptsFixtureSmoke,
-  runDevCloudWorkbenchSessionContinuityFixtureSmoke,
   runDevCloudWorkbenchStaticSmoke,
-  runDevCloudWorkbenchTimeoutFixtureSmoke,
   sanitizeAgentChatBody
 } from "./src/dev-cloud-workbench-smoke-lib.mjs";
 import {
@@ -22,10 +18,6 @@ import {
   decideSmokeReportWrite,
   smokeCliExitCode
 } from "./dev-cloud-workbench-smoke.mjs";
-import {
-  compactLayoutSmokeCliOutput,
-  parseLayoutSmokeArgs
-} from "./dev-cloud-workbench-layout-smoke.mjs";
 import { checkProfiles } from "./src/check-plan.mjs";
 
 const sourceIdentity = Object.freeze({
@@ -90,7 +82,7 @@ test("source/default workbench report cannot claim DEV-LIVE and documents the co
   assert.equal(report.checks.find((check) => check.id === "code-agent-long-timeout-contract")?.status, "pass");
   const traceDisclosure = report.checks.find((check) => check.id === "code-agent-trace-replay-disclosure");
   assert.equal(traceDisclosure?.status, "pass");
-  assert.deepEqual(traceDisclosure?.evidence, ["显示全部可读事件 / 完整 trace 回放中", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "internal scroll for full trace"]);
+  assert.deepEqual(traceDisclosure?.evidence, ["显示全部可读事件 / 完整 trace 回放中", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "traceScrollPinnedToBottom", "internal scroll for full trace"]);
 });
 
 test("Code Agent browser failure classifier emits Chinese timeout/provider/browser categories with traceId", () => {
@@ -188,42 +180,6 @@ test("smoke args include a DOM-only live read-only mode", () => {
   assert.equal(args.urlExplicit, true);
 });
 
-test("smoke args include reusable layout-only browser mode", () => {
-  const local = parseSmokeArgs(["--layout"]);
-  assert.equal(local.mode, "layout");
-  assert.equal(local.urlExplicit, undefined);
-
-  const build = parseSmokeArgs(["--layout", "--build"]);
-  assert.equal(build.mode, "layout");
-  assert.equal(build.build, true);
-
-  const live = parseSmokeArgs(["--layout", "--url", "http://74.48.78.17:16666/"]);
-  assert.equal(live.mode, "layout");
-  assert.equal(live.url, "http://74.48.78.17:16666/");
-  assert.equal(live.urlExplicit, true);
-});
-
-test("dedicated layout smoke CLI supports static build and DEV live shorthand", () => {
-  const local = parseLayoutSmokeArgs(["--static"]);
-  assert.equal(local.mode, "layout");
-  assert.equal(local.urlExplicit, undefined);
-
-  const build = parseLayoutSmokeArgs(["--build", "--report", "/tmp/hwlab-dev-gate/dev-cloud-workbench-layout.json"]);
-  assert.equal(build.mode, "layout");
-  assert.equal(build.build, true);
-  assert.equal(build.reportPath, "/tmp/hwlab-dev-gate/dev-cloud-workbench-layout.json");
-
-  const liveDefault = parseLayoutSmokeArgs(["--live"]);
-  assert.equal(liveDefault.mode, "layout");
-  assert.equal(liveDefault.url, "http://74.48.78.17:16666/");
-  assert.equal(liveDefault.urlExplicit, true);
-
-  const liveExplicit = parseLayoutSmokeArgs(["--live", "--url", "http://74.48.78.17:16666/"]);
-  assert.equal(liveExplicit.mode, "layout");
-  assert.equal(liveExplicit.url, "http://74.48.78.17:16666/");
-  assert.equal(liveExplicit.urlExplicit, true);
-});
-
 test("source/default smoke covers #352 resource explorer removal contract", () => {
   const report = runDevCloudWorkbenchStaticSmoke();
   const check = report.checks.find((item) => item.id === "feedback-352-resource-explorer-removed");
@@ -236,7 +192,7 @@ test("source/default smoke covers Device Pod right-sidebar contract", () => {
   const report = runDevCloudWorkbenchStaticSmoke();
   const summary = report.checks.find((item) => item.id === "device-pod-summary-sidebar");
   const events = report.checks.find((item) => item.id === "device-pod-event-stream");
-  const service = report.checks.find((item) => item.id === "device-pod-fake-service");
+  const service = report.checks.find((item) => item.id === "device-pod-executor-authority");
   assert.equal(summary?.status, "pass");
   assert.equal(events?.status, "pass");
   assert.equal(service?.status, "pass");
@@ -539,221 +495,13 @@ test("Code Agent browser classifier blocks completed payloads without backend ev
   assert.equal(classification.blocker, "untrusted-completion");
 });
 
-test("local Code Agent timeout fixture keeps bounded timeout state, trace context, and retry input", async () => {
-  const report = await runDevCloudWorkbenchTimeoutFixtureSmoke({
-    responseDelayMs: 120,
-    timeoutConfigMs: 50
-  });
-
-  if (report.status === "skip") {
-    assert.match(report.summary, /Playwright is unavailable/u);
-    return;
-  }
-
-  assert.equal(report.status, "pass", JSON.stringify(report.blockers, null, 2));
-  assert.equal(report.evidenceLevel, "SOURCE");
-  assert.equal(report.devLive, false);
-  const timeoutCheck = report.checks.find((check) => check.id === "local-agent-timeout-fixture-failed-state");
-  assert.equal(timeoutCheck?.status, "pass");
-  assert.equal(timeoutCheck.observations.ui.agentChatStatus, "等待超时");
-  assert.equal(timeoutCheck.observations.ui.traceHasTraceId, true);
-  assert.equal(timeoutCheck.observations.ui.retryInputPreserved, true);
-  assert.equal(timeoutCheck.observations.ui.completedMessageVisible, false);
-});
-
-test("local session continuity fixture reuses Code Agent context and retries with degraded-copy guard", async () => {
-  const report = await runDevCloudWorkbenchSessionContinuityFixtureSmoke();
-  if (report.status === "skip") {
-    assert.match(report.summary, /Playwright is unavailable/u);
-    return;
-  }
-
-  assert.equal(report.status, "pass", JSON.stringify(report.blockers, null, 2));
-  assert.equal(report.evidenceLevel, "SOURCE");
-  assert.equal(report.devLive, false);
-  assert.equal(report.checks.find((check) => check.id === "local-agent-session-continuity-two-turns")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "local-agent-session-continuity-retry")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "local-agent-session-continuity-degraded-copy")?.status, "pass");
-  const continuity = report.checks.find((check) => check.id === "local-agent-session-continuity-two-turns")?.observations;
-  assert.equal(continuity.secondRequest.conversationId, continuity.firstRequest.conversationId);
-  assert.equal(continuity.secondRequest.sessionId, "ses_source_fixture_continuity");
-  assert.equal(continuity.secondRequest.threadId, "thread_source_fixture_continuity");
-  const retry = report.checks.find((check) => check.id === "local-agent-session-continuity-retry")?.observations;
-  assert.equal(retry.retryRequest.message, retry.failedRequest.message);
-  assert.equal(retry.retryRequest.sessionId, retry.failedRequest.sessionId);
-  assert.equal(retry.retryRequest.threadId, retry.failedRequest.threadId);
-});
-
-test("Code Agent quick prompt fixture fills input, does not autosend writes, and fits mobile", async () => {
-  const report = await runDevCloudWorkbenchQuickPromptsFixtureSmoke();
-  if (report.status === "skip") {
-    assert.match(report.summary, /Playwright is unavailable/u);
-    return;
-  }
-
-  assert.equal(report.status, "pass", JSON.stringify(report.blockers, null, 2));
-  assert.equal(report.evidenceLevel, "SOURCE");
-  assert.equal(report.devLive, false);
-  assert.equal(report.safety.codeAgentPostSentByQuickPrompt, false);
-  assert.equal(report.safety.hardwareWriteApis, false);
-
-  const fill = report.checks.find((check) => check.id === "quick-prompts-fill-input");
-  const noAutosend = report.checks.find((check) => check.id === "quick-prompts-write-no-autosend");
-  const copy = report.checks.find((check) => check.id === "quick-prompts-copy-boundary");
-  const layout = report.checks.find((check) => check.id === "quick-prompts-mobile-layout");
-  assert.equal(fill?.status, "pass");
-  assert.equal(noAutosend?.status, "pass");
-  assert.equal(copy?.status, "pass");
-  assert.equal(layout?.status, "pass");
-  assert.equal(noAutosend.observations.every((item) => item.agentPostCountDelta === 0), true);
-  assert.equal(noAutosend.observations.every((item) => item.explicitSendRequired === true), true);
-  assert.equal(copy.observations.every((item) => item.copyBoundaryOk === true), true);
-  assert.equal(layout.observations.some((item) => item.viewport.width === 390 && item.layoutOk), true);
-});
-
-test("layout smoke verifies desktop and mobile default workbench geometry without resource explorer", async () => {
-  const report = await runDevCloudWorkbenchLayoutSmoke();
-  if (report.status === "skip") {
-    assert.match(report.summary, /Playwright is unavailable/u);
-    return;
-  }
-
-  assert.equal(report.status, "pass", JSON.stringify(report.blockers, null, 2));
-  assert.equal(report.issue, "pikasTech/HWLAB#273");
-  assert.equal(report.taskId, "dev-cloud-workbench-layout");
-  assert.equal(report.acceptanceLevel, "dev_cloud_workbench_layout");
-  assert.equal(report.sourceMode, "source-static");
-  assert.equal(report.evidenceLevel, "SOURCE");
-  assert.equal(report.devLive, false);
-  assert.equal(report.devPreconditions.status, "not_applicable");
-  assert.equal(report.localSmoke.commands.includes("npm run web:check"), true);
-  for (const command of [
-    "node --check scripts/dev-cloud-workbench-layout-smoke.mjs",
-    "npm run web:layout",
-    "npm run web:layout:build",
-    "npm run web:layout:live"
-  ]) {
-    assert.equal(report.validationCommands.includes(command), true, `missing ${command}`);
-  }
-  for (const id of [
-    "layout-desktop-default",
-    "layout-narrow-desktop-default",
-    "layout-mobile-default",
-    "layout-feedback-352-resource-explorer-removed",
-    "layout-feedback-437-live-build-overlay",
-    "layout-left-sidebar-collapse",
-    "layout-gate-desktop",
-    "layout-gate-narrow-desktop",
-    "layout-gate-mobile"
-  ]) {
-    assert.equal(report.checks.find((check) => check.id === id)?.status, "pass", id);
-  }
-
-  assert.deepEqual(
-    report.viewports.map((viewport) => `${viewport.width}x${viewport.height}`),
-    ["1366x768", "1024x768", "390x844"]
-  );
-  assert.equal(Array.isArray(report.failures), true);
-  assert.equal(Array.isArray(report.skipped), true);
-  assert.equal(report.artifacts.reportPath, null);
-  assert.match(report.reportLifecycle.summary, /cannot be used as DEV-LIVE evidence/u);
-  assert.match(report.devPreconditions.summary, /not required for SOURCE\/static gates/u);
-  assert.equal(report.safety.hitTestMethod.includes("elementsFromPoint"), true);
-  assert.match(report.safety.statement, /does not send Code Agent chat, call Device Pod or hardware write APIs/u);
-  assert.equal(report.checks.find((check) => check.id === "layout-device-pod-summary-sidebar")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "layout-device-pod-event-stream")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "layout-device-pod-detail-dialog")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "layout-feedback-352-resource-explorer-removed")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "layout-feedback-437-live-build-overlay")?.status, "pass");
-  assert.equal(report.checks.find((check) => check.id === "layout-issue-288-future-single-table-gate")?.status, "skip");
-
-  const desktopDefault = report.checks.find((check) => check.id === "layout-desktop-default")?.observations;
-  const resourceExplorerRemoval = report.checks.find((check) => check.id === "layout-feedback-352-resource-explorer-removed")?.observations;
-  assert.equal(resourceExplorerRemoval.forbiddenSelectors.includes("#explorer-resize"), true);
-  assert.equal(resourceExplorerRemoval.forbiddenCopy.includes("常用能力"), true);
-  assert.equal(resourceExplorerRemoval.coverage.desktop.covered, true);
-  assert.equal(resourceExplorerRemoval.coverage.mobile.removedVisibleCopyAbsent, true);
-  assert.equal(desktopDefault.removedSelectorsAbsent, true);
-  assert.equal(desktopDefault.removedVisibleCopyAbsent, true);
-  assert.equal(desktopDefault.resourceExplorerRemovalGuard, true);
-  assert.equal(desktopDefault.keyTargetsReachable, true);
-  assert.equal(desktopDefault.devicePod.summaryOk, true);
-  assert.equal(desktopDefault.devicePod.noInternalDisclosure, true);
-  assert.equal(desktopDefault.devicePod.noLegacySelectors, true);
-  assert.equal(desktopDefault.devicePod.detailDialogOk, true);
-  assert.equal(desktopDefault.devicePod.eventStreamOk, true);
-  assert.equal(desktopDefault.devicePod.summaryTileCount >= 2, true);
-  assert.equal(desktopDefault.noHorizontalOverflow.right, true);
-  assert.equal(desktopDefault.liveBuildLayout.overlayPositioned, true);
-  assert.equal(desktopDefault.liveBuildLayout.dialogVisible, true);
-  assert.equal(desktopDefault.liveBuildLayout.dialogViewportContained, true);
-  assert.equal(desktopDefault.liveBuildLayout.stableGeometry, true);
-  assert.equal(desktopDefault.liveBuildLayout.closedByButton, true);
-  assert.equal(Object.hasOwn(desktopDefault.boxes.shell, "text"), false);
-  assert.equal(Object.hasOwn(desktopDefault.semanticOverlapChecks[0].boxes[".right-sidebar"], "text"), false);
-  assert.equal(desktopDefault.failures.length, 0);
-  assert.equal(desktopDefault.semanticOverlapChecks.every((check) => !check.overlaps), true);
-  assert.equal(desktopDefault.overflowChecks.every((check) => check.ok), true);
-
-  const mobileDefault = report.checks.find((check) => check.id === "layout-mobile-default")?.observations;
-  assert.equal(mobileDefault.removedSelectorsAbsent, true);
-  assert.equal(mobileDefault.removedVisibleCopyAbsent, true);
-  assert.equal(mobileDefault.resourceExplorerRemovalGuard, true);
-  assert.equal(mobileDefault.keyTargetsReachable, true);
-  assert.equal(mobileDefault.devicePod.summaryOk, true);
-  assert.equal(mobileDefault.devicePod.noInternalDisclosure, true);
-  assert.equal(mobileDefault.devicePod.noLegacySelectors, true);
-  assert.equal(mobileDefault.devicePod.detailDialogOk, true);
-  assert.equal(mobileDefault.devicePod.eventStreamOk, true);
-  assert.equal(mobileDefault.noHorizontalOverflow.right, true);
-  assert.equal(mobileDefault.liveBuildLayout.overlayPositioned, true);
-  assert.equal(mobileDefault.liveBuildLayout.dialogVisible, true);
-  assert.equal(mobileDefault.liveBuildLayout.dialogViewportContained, true);
-  assert.equal(mobileDefault.liveBuildLayout.stableGeometry, true);
-
-  const leftCollapse = report.checks.find((check) => check.id === "layout-left-sidebar-collapse")?.observations;
-  assert.equal(leftCollapse.status, "pass");
-  assert.equal(leftCollapse.coverage.desktop.widthReclaimed, true);
-  assert.equal(leftCollapse.coverage["narrow-desktop"].widthReclaimed, true);
-  assert.equal(leftCollapse.coverage.mobile.widthReclaimed, true);
-  assert.equal(leftCollapse.coverage.desktop.collapsed.keyTargetsReachable, true);
-  assert.equal(leftCollapse.coverage.mobile.collapsed.keyTargetsReachable, true);
-  assert.equal(leftCollapse.coverage.desktop.restoredCollapsed.collapsed, true);
-  assert.equal(leftCollapse.coverage.mobile.expanded.routeButtonsVisible, true);
-
-  const compact = compactLayoutSmokeCliOutput(report);
-  assert.equal(compact.status, "pass");
-  assert.equal(compact.artifacts.screenshotCount >= 18, true);
-  assert.equal(compact.failures.length, 0);
-  assert.equal(compact.blockers.length, 0);
-  assert.equal(JSON.stringify(compact).includes('"checks"'), false);
-  assert.equal(JSON.stringify(compact).includes('"boxes"'), false);
-  assert.equal(JSON.stringify(compact).includes('"text"'), false);
-});
-
-test("repo-owned web checks expose source build and DEV live layout smoke gates", () => {
+test("repo-owned web checks keep cloud-web semantic checks out of old browser gates", () => {
   const checkCommands = checkProfiles.check.map((task) => task.command.join(" "));
   assert.match(rootPackage.scripts["web:check"], /cd web\/hwlab-cloud-web && bun run check/u);
-  assert.match(rootPackage.scripts["web:check"], /bun test web\/hwlab-cloud-web\/message-markdown\.test\.ts/u);
-  assert.equal(
-    rootPackage.scripts["web:layout"],
-    "node scripts/dev-cloud-workbench-layout-smoke.mjs --static --report /tmp/hwlab-dev-gate/dev-cloud-workbench-layout.json"
-  );
-  assert.equal(
-    rootPackage.scripts["web:layout:build"],
-    "node scripts/dev-cloud-workbench-layout-smoke.mjs --build --report /tmp/hwlab-dev-gate/dev-cloud-workbench-layout-build.json"
-  );
-  assert.equal(
-    rootPackage.scripts["web:layout:live"],
-    "node scripts/dev-cloud-workbench-layout-smoke.mjs --live --url http://74.48.78.17:16666/ --report /tmp/hwlab-dev-gate/dev-cloud-workbench-layout-live.json"
-  );
-  assert.ok(checkCommands.some((command) => command === "node --check scripts/dev-cloud-workbench-layout-smoke.mjs"));
+  assert.match(cloudWebPackage.scripts.check, /bun test && bun run scripts\/check\.ts/u);
   assert.ok(checkProfiles.check.some((task) => task.cwd === "web/hwlab-cloud-web" && task.command.join(" ") === "bun run check"));
-  assert.doesNotMatch(checkCommands.join("\n"), /gate-summary\.mjs|export-web-gate-summary/u);
-  assert.equal(cloudWebPackage.scripts.layout.includes("--static"), true);
-  assert.equal(cloudWebPackage.scripts["layout:build"].includes("--build"), true);
-  assert.equal(cloudWebPackage.scripts["layout:live"].includes("--live --url http://74.48.78.17:16666/"), true);
-  assert.match(cloudWebCheckSource, /runJavaScriptSyntaxCheck/u);
+  assert.doesNotMatch(checkCommands.join("\n"), /dev-cloud-workbench-layout-smoke|gate-summary\.mjs|export-web-gate-summary/u);
+  assert.match(cloudWebCheckSource, /assertTraceHelpersBound/u);
   assert.match(cloudWebCheckSource, /Device Pod summary sidebar/u);
   assert.match(cloudWebCheckSource, /device-detail-dialog/u);
   assert.match(cloudWebCheckSource, /device-event-text/u);
diff --git a/scripts/src/check-plan.mjs b/scripts/src/check-plan.mjs
index e44c58dc..217ecca4 100644
--- a/scripts/src/check-plan.mjs
+++ b/scripts/src/check-plan.mjs
@@ -98,7 +98,6 @@ export const checkProfiles = Object.freeze({
     { id: "check-080-smoke-run-bun", group: "smoke", command: ["node","scripts/run-bun.mjs","build","scripts/src/m3-io-control-e2e.mjs","--target=bun","--packages=external","--outdir=/tmp/hwlab-ts-check"] },
     { id: "check-081-smoke-m3-io-control-e2e-test", group: "smoke", command: ["node","--check","scripts/m3-io-control-e2e.test.mjs"] },
     { id: "check-082-cloud-web-dev-cloud-workbench-smoke-test", group: "cloud-web", command: ["node","--check","scripts/dev-cloud-workbench-smoke.test.mjs"] },
-    { id: "check-083-cloud-web-dev-cloud-workbench-layout-smoke", group: "cloud-web", command: ["node","--check","scripts/dev-cloud-workbench-layout-smoke.mjs"] },
     { id: "check-089-deploy-validate-artifact-catalog", group: "deploy", command: ["node","--check","scripts/validate-artifact-catalog.mjs"] },
     { id: "check-090-deploy-refresh-artifact-catalog", group: "deploy", command: ["node","--check","scripts/refresh-artifact-catalog.mjs"] },
     { id: "check-091-deploy-refresh-artifact-catalog-test", group: "deploy", command: ["node","--check","scripts/refresh-artifact-catalog.test.mjs"] },
diff --git a/scripts/src/dev-cloud-workbench-smoke-lib.mjs b/scripts/src/dev-cloud-workbench-smoke-lib.mjs
index b2669323..a5bece46 100644
--- a/scripts/src/dev-cloud-workbench-smoke-lib.mjs
+++ b/scripts/src/dev-cloud-workbench-smoke-lib.mjs
@@ -467,12 +467,12 @@ function runStaticSmoke() {
     evidence: [...gateReviewTableColumns, "/v1/diagnostics/gate", "LIVE-BACKEND", ...gateReviewStatusLabels]
   });
 
-  addCheck(checks, blockers, "internal-gate-route-aliases", gateRouteAliasesAreServed(files.app, artifactPublisher, buildScript, distContractScript), "/gate and /diagnostics/gate are direct internal diagnostic aliases, not default routes.", {
+  addCheck(checks, blockers, "internal-gate-route-aliases", gateRouteAliasesAreServed(files.app, files.artifactPublisher, buildScript, distContractScript), "/gate and /diagnostics/gate are direct internal diagnostic aliases, not default routes.", {
     blocker: "runtime_blocker",
     evidence: gateRouteAliases
   });
 
-  addCheck(checks, blockers, "direct-help-route-alias", helpRouteAliasesAreServed(files.app, artifactPublisher, buildScript, distContractScript), "/help is a direct user-facing help alias and does not become the default route.", {
+  addCheck(checks, blockers, "direct-help-route-alias", helpRouteAliasesAreServed(files.app, files.artifactPublisher, buildScript, distContractScript), "/help is a direct user-facing help alias and does not become the default route.", {
     blocker: "runtime_blocker",
     evidence: [...helpRouteAliases, "routeFromLocation final fallback is workspace"]
   });
@@ -538,7 +538,7 @@ function runStaticSmoke() {
 
   addCheck(checks, blockers, "code-agent-trace-replay-disclosure", hasCodeAgentTraceReplayDisclosure(files), "Trace replay panels auto-replay full trace, avoid compressed-window UI, and preserve open/scroll state while live trace updates.", {
     blocker: "observability_blocker",
-    evidence: ["显示全部可读事件 / 完整 trace 回放中", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "internal scroll for full trace"]
+    evidence: ["显示全部可读事件 / 完整 trace 回放中", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "traceScrollPinnedToBottom", "internal scroll for full trace"]
   });
 
   addCheck(checks, blockers, "code-agent-provider-readiness-visibility", hasCodeAgentReadinessVisibility(files), "Workbench shows provider/stdio blockers without exposing credential internals and only long-lived Codex stdio replies can become full Code Agent completion.", {
@@ -2392,6 +2392,9 @@ function hasCodeAgentTraceReplayDisclosure({ app, styles }) {
     /rememberTraceScrollPosition\(traceUiKey,\s*list\)/u.test(tracePanelBody) &&
     /traceDetailsOpen:\s*new Map\(\)/u.test(app) &&
     /traceScrollPositions:\s*new Map\(\)/u.test(app) &&
+    /traceScrollPinnedToBottom:\s*new Map\(\)/u.test(app) &&
+    /function\s+shouldFollowTraceBottom\s*\(/u.test(app) &&
+    /function\s+scrollTraceToBottom\s*\(/u.test(app) &&
     /captureTraceScrollPositions\(\)/u.test(renderConversationBody) &&
     /restoreTraceScrollPositions\(\)/u.test(renderConversationBody) &&
     !/CODE_AGENT_TRACE_PREVIEW_LIMIT|tracePreviewEvents|展开全部|data-trace-mode="tail"/u.test(app) &&
diff --git a/web/hwlab-cloud-web/app-conversation.ts b/web/hwlab-cloud-web/app-conversation.ts
index 8a3293ce..37411274 100644
--- a/web/hwlab-cloud-web/app-conversation.ts
+++ b/web/hwlab-cloud-web/app-conversation.ts
@@ -74,15 +74,21 @@ function rememberTraceScrollPosition(traceUiKey, list) {
     left: list.scrollLeft,
     bottomGap: scrollBottomGap(list)
   });
+  state.traceScrollPinnedToBottom.set(traceUiKey, isScrolledToBottom(list));
 }
 
 function restoreTraceScrollPositions(root = el.conversationList, options = {}) {
   for (const list of root.querySelectorAll(".message-trace-events[data-trace-ui-key]")) {
-    if (options.deferred === true && isTraceScrollUserActive(list.dataset.traceUiKey)) continue;
-    const position = state.traceScrollPositions.get(list.dataset.traceUiKey);
-    if (!position) continue;
+    const traceUiKey = list.dataset.traceUiKey;
+    if (options.deferred === true && isTraceScrollUserActive(traceUiKey)) continue;
+    const position = state.traceScrollPositions.get(traceUiKey);
+    if (!position) {
+      if (shouldDefaultTracePinToBottom(list)) scrollTraceToBottom(list);
+      continue;
+    }
     writeTraceScrollTop(list, scrollTopForPosition(list, position));
     list.scrollLeft = Math.min(position.left, Math.max(0, list.scrollWidth - list.clientWidth));
+    rememberTraceScrollPosition(traceUiKey, list);
   }
 }
 
@@ -146,12 +152,47 @@ function scrollBottomGap(element) {
   return Math.max(0, element.scrollHeight - element.clientHeight - element.scrollTop);
 }
 
+function isScrolledToBottom(element) {
+  return scrollBottomGap(element) <= SCROLL_BOTTOM_PIN_PX;
+}
+
+function scrollBottomTop(element) {
+  return Math.max(0, element.scrollHeight - element.clientHeight);
+}
+
 function scrollTopForPosition(element, position) {
-  const maxTop = Math.max(0, element.scrollHeight - element.clientHeight);
+  const maxTop = scrollBottomTop(element);
   if (Number(position.bottomGap) <= SCROLL_BOTTOM_PIN_PX) return maxTop;
   return Math.min(position.top, maxTop);
 }
 
+function shouldDefaultTracePinToBottom(list) {
+  return list?.dataset?.traceStatus === "running" || isScrolledToBottom(list);
+}
+
+function shouldFollowTraceBottom(list) {
+  const traceUiKey = list?.dataset?.traceUiKey;
+  if (!traceUiKey || !list) return false;
+  const pinned = state.traceScrollPinnedToBottom.get(traceUiKey);
+  return pinned === true || (pinned !== false && shouldDefaultTracePinToBottom(list));
+}
+
+function scrollTraceToBottom(list, options = {}) {
+  const traceUiKey = list?.dataset?.traceUiKey;
+  if (!traceUiKey || !list) return;
+  const run = () => {
+    if (!list.isConnected || !shouldFollowTraceBottom(list)) return;
+    writeTraceScrollTop(list, scrollBottomTop(list));
+    rememberTraceScrollPosition(traceUiKey, list);
+  };
+  state.traceScrollPinnedToBottom.set(traceUiKey, true);
+  if (options.deferred === true) {
+    window.requestAnimationFrame(run);
+    return;
+  }
+  run();
+}
+
 function markTraceScrollIntent(traceUiKey) {
   if (!traceUiKey) return;
   state.traceScrollUserActiveUntil.set(traceUiKey, Date.now() + SCROLL_USER_ACTIVITY_MS);
@@ -211,10 +252,17 @@ function patchTracePanelElement(panel, replacement) {
   const currentList = panel.querySelector(".message-trace-events[data-trace-ui-key]");
   const nextList = replacement.querySelector(".message-trace-events[data-trace-ui-key]");
   if (currentList && nextList) {
+    const shouldFollowBottom = shouldFollowTraceBottom(currentList);
     captureTraceBodyScrollPositions(currentList);
     currentList.dataset.traceMode = nextList.dataset.traceMode ?? "";
+    currentList.dataset.traceStatus = nextList.dataset.traceStatus ?? "";
     patchTraceEventList(currentList, [...nextList.children]);
     restoreTraceBodyScrollPositions(currentList);
+    if (shouldFollowBottom) {
+      scrollTraceToBottom(currentList, { deferred: true });
+    } else {
+      rememberTraceScrollPosition(currentList.dataset.traceUiKey, currentList);
+    }
   }
 }
 
@@ -1273,6 +1321,7 @@ function messageTracePanel(message) {
   list.className = "message-trace-events";
   if (traceUiKey) {
     list.dataset.traceUiKey = traceUiKey;
+    list.dataset.traceStatus = toneClass(message.status);
     for (const eventName of ["wheel", "touchstart", "pointerdown"]) {
       list.addEventListener(eventName, () => markTraceScrollIntent(traceUiKey), { passive: true });
     }
diff --git a/web/hwlab-cloud-web/app-device-pod.ts b/web/hwlab-cloud-web/app-device-pod.ts
index 357b93b9..c6018c6c 100644
--- a/web/hwlab-cloud-web/app-device-pod.ts
+++ b/web/hwlab-cloud-web/app-device-pod.ts
@@ -62,6 +62,7 @@ function initCommandBar() {
     state.conversationScrollUserActiveUntil = 0;
     state.conversationScrollPosition = { top: 0, left: 0 };
     state.traceScrollPositions.clear();
+    state.traceScrollPinnedToBottom.clear();
     state.traceScrollUserActiveUntil.clear();
     state.traceProgrammaticScrollWrites = 0;
     state.fullTraceReplayInFlight.clear();
diff --git a/web/hwlab-cloud-web/app-trace.ts b/web/hwlab-cloud-web/app-trace.ts
index f45d2df4..4bf8b1a2 100644
--- a/web/hwlab-cloud-web/app-trace.ts
+++ b/web/hwlab-cloud-web/app-trace.ts
@@ -212,6 +212,7 @@ function traceScrollMetrics() {
     conversationBottomGap: scrollBottomGap(conversation),
     traceTop: list?.scrollTop ?? null,
     traceBottomGap: list ? scrollBottomGap(list) : null,
+    tracePinnedToBottom: list ? state.traceScrollPinnedToBottom.get(list.dataset.traceUiKey) ?? null : null,
     traceScrollHeight: list?.scrollHeight ?? null,
     traceClientHeight: list?.clientHeight ?? null,
     traceRowCount: list?.querySelectorAll(".message-trace-row").length ?? 0
diff --git a/web/hwlab-cloud-web/app.ts b/web/hwlab-cloud-web/app.ts
index ef635eeb..adef2b3c 100644
--- a/web/hwlab-cloud-web/app.ts
+++ b/web/hwlab-cloud-web/app.ts
@@ -190,6 +190,7 @@ const state = {
   conversationScrollUserActiveUntil: 0,
   conversationScrollPosition: { top: 0, left: 0 },
   traceScrollPositions: new Map(),
+  traceScrollPinnedToBottom: new Map(),
   traceScrollUserActiveUntil: new Map(),
   traceBodyScrollPositions: new Map(),
   traceBodyScrollUserActiveUntil: new Map(),