fix: add trace auto-follow bottom pinning

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"] },

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) &&