diff --git a/docs/reference/cloud-workbench.md b/docs/reference/cloud-workbench.md
index 8b2e2de7..eda6bca6 100644
--- a/docs/reference/cloud-workbench.md
+++ b/docs/reference/cloud-workbench.md
@@ -114,8 +114,20 @@ Code Agent trace 在消息卡片内使用独立滚动容器展示。SSE、轮询
 conversation list 和按 `messageId/traceId` 记录的 trace list
 `scrollTop/scrollLeft`。`#conversation-list` 需要绑定 scroll listener 持续记录用户
 位置，并在 DOM 替换后立即恢复一次、下一帧再恢复一次，避免布局重算或 scroll
-anchoring 把列表拉回顶部。完整 trace 可通过复制/下载获取，页面内默认保持“显示全部 +
-内部滚动”的单一模式。
+anchoring 把列表拉回顶部。
+
+Trace 展示遵循 UniDesk commander loop 的低噪声完整可读事件线原则：原始 trace
+JSON 仍是复制/下载和追责的完整来源；页面内默认展示每个有意义的 agent message、
+command/tool completed、stderr/error、turn/status 和 gateway JSON-RPC 结果。token
+delta、assistant chunk、command output chunk、reasoning delta 等噪声可以聚合或隐藏，
+但聚合不得吞掉中间的可读 message/tool call。命令和工具行必须至少保留状态、exit
+code、耗时、输出体量、关键 operation/evidence id 和可读摘要。
+
+“显示全部”只能用于已经覆盖完整 trace 的可读事件线，不能把 result polling 返回的
+head-tail 压缩窗口或 9 行摘要冒充全量。若当前只拿到压缩窗口，界面必须明确显示
+“压缩窗口/待回放完整 trace”，并通过 `/v1/agent/chat/trace/<traceId>` 自动或手动回放
+完整 trace 后再标记为“显示全部”。若完整 trace 已过期或后端缺失，也必须显式展示
+缺失状态，而不是把已载入窗口说成全量。
 
 ## Lightweight Checks
 
diff --git a/docs/reference/code-agent-chat-readiness.md b/docs/reference/code-agent-chat-readiness.md
index 8bb344d8..468d8f95 100644
--- a/docs/reference/code-agent-chat-readiness.md
+++ b/docs/reference/code-agent-chat-readiness.md
@@ -102,7 +102,7 @@ Workbench 会把“Gateway 命令超时”控件的毫秒值随 `/v1/agent/chat`
 
 调大 timeout 不能替代正确的长任务控制语义。Gateway poll loop 必须支持后台 in-flight 执行，长 Keil/UV4 命令运行期间仍能处理短 `job-status`、state/log 读取和健康探测；如果 trace 出现 `shellExecuted=false` 的 dispatch timeout，优先检查 gateway 是否队头阻塞或离线，而不是把所有 wrapper 调用改成长等待。
 
-Workbench trace 对已知 JSON-RPC gateway 响应应按普通 tool call 展示：首行展示 `tool hardware.invoke.shell status=<status> op=<operationId> exit=<exitCode> s=<duration>`，正文展示 request、gateway/resource/capability、dispatch、command、audit/evidence 以及有界 stdout/stderr。不要把整段 JSON 原样刷屏；复制/下载完整 trace 仍保留原始 JSON。
+Workbench trace 对已知 JSON-RPC gateway 响应应按普通 tool call 展示：前端首行用中性 `tool gateway.shell status=<status> op=<operationId> exit=<exitCode> s=<duration>`，正文展示 request、gateway/resource/capability、dispatch、command、audit/evidence 以及有界 stdout/stderr。后端 capability 仍可记录 `hardware.invoke.shell` 路由事实，但 Cloud Web 源码不得把它暴露成可点击或可误解的直接硬件写入口。不要把整段 JSON 原样刷屏；复制/下载完整 trace 仍保留原始 JSON。
 
 ## 短连接 result 轮询
 
diff --git a/internal/cloud/code-agent-session-registry.test.mjs b/internal/cloud/code-agent-session-registry.test.mjs
index e440dcb1..ca48e064 100644
--- a/internal/cloud/code-agent-session-registry.test.mjs
+++ b/internal/cloud/code-agent-session-registry.test.mjs
@@ -1887,7 +1887,7 @@ test("Code Agent PC gateway prompt reaches Codex stdio instead of internal hardw
     assert.match(turn.args.prompt, /-EncodedCommand/u);
     assert.match(turn.args.prompt, /Windows filesystem inventory/u);
     assert.match(turn.args.prompt, /Select-Object -First/u);
-    assert.match(turn.args.prompt, /ConvertTo-Json -Compress/u);
+    assert.match(turn.args.prompt, /ConvertTo-HwlabJson/u);
   } finally {
     await rm(fakeCodex.root, { recursive: true, force: true });
     await rm(codexHome, { recursive: true, force: true });
diff --git a/scripts/dev-cloud-workbench-smoke.test.mjs b/scripts/dev-cloud-workbench-smoke.test.mjs
index fa596597..1c642708 100644
--- a/scripts/dev-cloud-workbench-smoke.test.mjs
+++ b/scripts/dev-cloud-workbench-smoke.test.mjs
@@ -91,7 +91,7 @@ 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, ["显示最近 14 / 总计 N", "展开全部", "复制 JSON", "下载 trace", "internal scroll for full trace"]);
+  assert.deepEqual(traceDisclosure?.evidence, ["显示全部可读事件 / 压缩窗口", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "internal scroll for full trace"]);
 });
 
 test("Code Agent browser failure classifier emits Chinese timeout/provider/browser categories with traceId", () => {
@@ -742,7 +742,7 @@ test("local external network fixture renders GitHub blocker with trace and witho
   assert.equal(blockerCheck.observations.ui.failedMessageHasTrace, true);
   assert.equal(blockerCheck.observations.ui.retryInputPreserved, true);
   assert.equal(blockerCheck.observations.ui.retryInputValue, "访问一下github看看");
-  assert.match(blockerCheck.observations.ui.traceText, /network:started/u);
+  assert.match(blockerCheck.observations.ui.traceText, /network started/u);
   assert.match(blockerCheck.observations.ui.traceText, /tool:external\.network\.check:blocked/u);
   assert.equal(blockerCheck.observations.ui.noMainAttributionNoise, true);
   assert.equal(blockerCheck.observations.prompt.response.error.code, "external_network_blocked");
@@ -876,8 +876,8 @@ test("layout smoke verifies desktop and mobile default workbench geometry withou
   assert.equal(desktopDefault.wiring.horizontalScroll.panelScrollWidth <= desktopDefault.wiring.horizontalScroll.panelClientWidth + 2, true);
   assert.equal(desktopDefault.noHorizontalOverflow.right, true);
   assert.equal(desktopDefault.liveBuildLayout.overlayPositioned, true);
-  assert.equal(desktopDefault.liveBuildLayout.popoverVisible, true);
-  assert.equal(desktopDefault.liveBuildLayout.popoverViewportContained, 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);
@@ -901,8 +901,8 @@ test("layout smoke verifies desktop and mobile default workbench geometry withou
   assert.equal(mobileDefault.wiring.metadataInDetails, true);
   assert.equal(mobileDefault.noHorizontalOverflow.right, true);
   assert.equal(mobileDefault.liveBuildLayout.overlayPositioned, true);
-  assert.equal(mobileDefault.liveBuildLayout.popoverVisible, true);
-  assert.equal(mobileDefault.liveBuildLayout.popoverViewportContained, 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;
diff --git a/scripts/src/dev-cloud-workbench-smoke-lib.mjs b/scripts/src/dev-cloud-workbench-smoke-lib.mjs
index fc5efea2..bc0fc13a 100644
--- a/scripts/src/dev-cloud-workbench-smoke-lib.mjs
+++ b/scripts/src/dev-cloud-workbench-smoke-lib.mjs
@@ -628,7 +628,7 @@ function runStaticSmoke() {
 
   addCheck(checks, blockers, "code-agent-trace-replay-disclosure", hasCodeAgentTraceReplayDisclosure(files), "Trace replay panels disclose full trace access and preserve open/scroll state while live trace updates.", {
     blocker: "observability_blocker",
-    evidence: ["显示全部 N / 原始 N", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "internal scroll for full trace"]
+    evidence: ["显示全部可读事件 / 压缩窗口", "复制 JSON", "下载 trace", "traceDetailsOpen", "traceScrollPositions", "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.", {
@@ -2651,7 +2651,10 @@ function hasCodeAgentTraceReplayDisclosure({ app, styles }) {
   const renderConversationBody = functionBody(app, "renderConversation");
   return (
     /function\s+messageTraceCountText\s*\(/u.test(app) &&
-    /显示全部\s+\$\{displayTotal\}\s+\/\s+原始\s+\$\{rawTotal\}/u.test(app) &&
+    /显示全部可读事件\s+\$\{readableTotal\}\s+\/\s+已载入原始\s+\$\{loadedTotal\}\s+\/\s+后端原始\s+\$\{rawTotal\}/u.test(app) &&
+    /压缩窗口\s+\$\{readableTotal\}\s+条可读事件\s+\/\s+已载入原始\s+\$\{loadedTotal\}\s+\/\s+后端原始\s+\$\{rawTotal\}/u.test(app) &&
+    /function\s+maybeReplayFullTraceForMessage\s*\(/u.test(app) &&
+    /function\s+replayFullTrace\s*\(/u.test(app) &&
     /function\s+renderTraceEventList\s*\(/u.test(app) &&
     /messageTraceToolbar\(message,\s*trace,\s*events,\s*rows\)/u.test(tracePanelBody) &&
     /list\.dataset\.traceMode\s*=\s*"all"/u.test(tracePanelBody) &&
@@ -4407,7 +4410,7 @@ async function inspectJourneyUi(page) {
         actions,
         eventCount: events.length,
         traceMode: panel.querySelector(".message-trace-events")?.dataset.traceMode ?? "",
-        allTraceVisible: /显示全部\s+\d+\s*\/\s*原始\s+\d+/u.test(countText),
+        allTraceVisible: /显示全部可读事件\s+\d+\s*\/\s*已载入原始\s+\d+\s*\/\s*后端原始\s+\d+/u.test(countText),
         copyJsonVisible: actions.includes("复制 JSON"),
         downloadTraceVisible: actions.includes("下载 trace"),
         fixedAllMode: panel.querySelector(".message-trace-events")?.dataset.traceMode === "all"
@@ -5014,6 +5017,9 @@ async function runLocalAgentFixtureSmoke({
           ...(globalThis.HWLAB_CLOUD_WEB_CONFIG ?? {}),
           timeouts: {
             ...(globalThis.HWLAB_CLOUD_WEB_CONFIG?.timeouts ?? {}),
+            codeAgentSubmitTimeoutMsMinMs: 1,
+            codeAgentSubmitTimeoutMs: timeoutMs,
+            codeAgentTimeoutMsMinMs: 1,
             codeAgentTimeoutMs: timeoutMs
           }
         };
@@ -5323,6 +5329,9 @@ async function inspectLocalAgentPendingViewport(browser, url, { width, height, r
           ...(globalThis.HWLAB_CLOUD_WEB_CONFIG ?? {}),
           timeouts: {
             ...(globalThis.HWLAB_CLOUD_WEB_CONFIG?.timeouts ?? {}),
+            codeAgentSubmitTimeoutMsMinMs: 1,
+            codeAgentSubmitTimeoutMs: timeoutMs,
+            codeAgentTimeoutMsMinMs: 1,
             codeAgentTimeoutMs: timeoutMs
           }
         };
diff --git a/web/hwlab-cloud-web/app.mjs b/web/hwlab-cloud-web/app.mjs
index 4b4b2905..5e3ada09 100644
--- a/web/hwlab-cloud-web/app.mjs
+++ b/web/hwlab-cloud-web/app.mjs
@@ -26,10 +26,11 @@ const CODE_AGENT_TIMEOUT_STORAGE_KEY = "hwlab.workbench.codeAgentTimeoutMs.v1";
 const GATEWAY_SHELL_TIMEOUT_STORAGE_KEY = "hwlab.workbench.gatewayShellTimeoutMs.v1";
 const TRACE_STREAM_FALLBACK_MS = 2500;
 const TRACE_POLL_INTERVAL_MS = 1000;
+const FULL_TRACE_REPLAY_TIMEOUT_MS = 15000;
 const API_TIMEOUT_MS = resolveTimeoutMs("apiTimeoutMs", DEFAULT_API_TIMEOUT_MS, { min: 500, max: 30000 });
 let CODE_AGENT_TIMEOUT_MS = resolveUserCodeAgentTimeoutMs();
 let GATEWAY_SHELL_TIMEOUT_MS = resolveUserGatewayShellTimeoutMs();
-const CODE_AGENT_SUBMIT_TIMEOUT_MS = resolveTimeoutMs("codeAgentSubmitTimeoutMs", DEFAULT_CODE_AGENT_SUBMIT_TIMEOUT_MS, { min: 5000, max: 120000 });
+const CODE_AGENT_SUBMIT_TIMEOUT_MS = resolveTimeoutMs("codeAgentSubmitTimeoutMs", DEFAULT_CODE_AGENT_SUBMIT_TIMEOUT_MS, { min: configuredTimeoutMinMs("codeAgentSubmitTimeoutMs", 5000), max: 120000 });
 const CODE_AGENT_CANCEL_TIMEOUT_MS = resolveTimeoutMs("codeAgentCancelTimeoutMs", DEFAULT_CODE_AGENT_CANCEL_TIMEOUT_MS, { min: 5000, max: 120000 });
 const rpcReadMethods = Object.freeze([
   "system.health",
@@ -187,6 +188,7 @@ const state = {
   conversationScrollPosition: { top: 0, left: 0 },
   traceScrollPositions: new Map(),
   traceScrollUserActiveUntil: new Map(),
+  fullTraceReplayInFlight: new Set(),
   canceledTraces: new Set(),
   currentRequest: null,
   sessionStatus: null,
@@ -260,6 +262,13 @@ function resolveTimeoutMs(name, fallback, { min, max }) {
   return Math.min(Math.max(Math.trunc(configured), min), max);
 }
 
+function configuredTimeoutMinMs(name, fallback) {
+  const config = globalThis.HWLAB_CLOUD_WEB_CONFIG?.timeouts ?? globalThis.HWLAB_CLOUD_WEB_TIMEOUTS ?? {};
+  const configured = Number(config?.[`${name}MinMs`]);
+  if (!Number.isFinite(configured)) return fallback;
+  return Math.max(1, Math.min(Math.trunc(configured), fallback));
+}
+
 function clampTimeoutMs(value, { min, max }) {
   if (value === null || value === undefined) return null;
   if (typeof value === "string" && value.trim() === "") return null;
@@ -269,14 +278,15 @@ function clampTimeoutMs(value, { min, max }) {
 }
 
 function resolveUserCodeAgentTimeoutMs() {
+  const min = configuredTimeoutMinMs("codeAgentTimeoutMs", 30000);
   let stored = null;
   try {
     stored = window.localStorage?.getItem(CODE_AGENT_TIMEOUT_STORAGE_KEY) ?? null;
   } catch {
     stored = null;
   }
-  return clampTimeoutMs(stored, { min: 30000, max: 1200000 })
-    ?? resolveTimeoutMs("codeAgentTimeoutMs", DEFAULT_CODE_AGENT_TIMEOUT_MS, { min: 30000, max: 1200000 });
+  return clampTimeoutMs(stored, { min, max: 1200000 })
+    ?? resolveTimeoutMs("codeAgentTimeoutMs", DEFAULT_CODE_AGENT_TIMEOUT_MS, { min, max: 1200000 });
 }
 
 function resolveUserGatewayShellTimeoutMs() {
@@ -805,6 +815,7 @@ function initCommandBar() {
     state.conversationScrollPosition = { top: 0, left: 0 };
     state.traceScrollPositions.clear();
     state.traceScrollUserActiveUntil.clear();
+    state.fullTraceReplayInFlight.clear();
     state.chatMessages = [];
     state.conversationId = null;
     state.sessionId = null;
@@ -961,6 +972,7 @@ async function submitAgentMessage(value, options = {}) {
         : undefined),
       availability: result.availability
     };
+    maybeReplayFullTraceForMessage(state.chatMessages[index]);
     if (result.availability) {
       state.codeAgentAvailability = result.availability;
     }
@@ -1418,6 +1430,7 @@ function runnerTraceFromSnapshot(snapshot, previous = null) {
     eventCount: Number.isInteger(snapshot.eventCount) ? snapshot.eventCount : snapshot.events.length,
     eventsCompacted: snapshot.eventsCompacted === true,
     eventWindow: snapshot.eventWindow ?? previous?.eventWindow,
+    fullTraceLoaded: snapshot.fullTraceLoaded === true || (snapshot.eventsCompacted !== true && Number.isInteger(snapshot.eventCount) && snapshot.eventCount === snapshot.events.length),
     elapsedMs: snapshot.elapsedMs ?? previous?.elapsedMs,
     waitingFor: snapshot.waitingFor ?? previous?.waitingFor,
     events: snapshot.events,
@@ -3948,16 +3961,16 @@ async function replayAgentTrace(messageId) {
   const message = state.chatMessages[index];
   if (!message.traceId) return;
   const response = await fetchJson(`/v1/agent/chat/trace/${encodeURIComponent(message.traceId)}`, {
-    timeoutMs: Math.min(API_TIMEOUT_MS, 5000),
+    timeoutMs: Math.min(Math.max(API_TIMEOUT_MS, 5000), FULL_TRACE_REPLAY_TIMEOUT_MS),
     timeoutName: "Code Agent trace replay"
   });
   if (response.ok) {
-    const runnerTrace = runnerTraceFromSnapshot(response.data, message.runnerTrace);
+    const runnerTrace = runnerTraceFromSnapshot({ ...response.data, fullTraceLoaded: true }, message.runnerTrace);
     state.chatMessages[index] = {
       ...message,
       runnerTrace,
       threadId: runnerTrace.threadId ?? message.threadId,
-      traceReplayStatus: `已回放 ${runnerTrace.events?.length ?? 0} 个真实 trace event；${lastTraceEventLabel(runnerTrace)}`,
+      traceReplayStatus: `完整 trace 已回放：${runnerTrace.events?.length ?? 0} 个原始 event；${lastTraceEventLabel(runnerTrace)}`,
       updatedAt: response.data?.updatedAt ?? new Date().toISOString()
     };
   } else {
@@ -3972,6 +3985,49 @@ async function replayAgentTrace(messageId) {
   renderRecords(state.liveSurface);
 }
 
+function maybeReplayFullTraceForMessage(message) {
+  if (!message || !message.traceId || message.runnerTrace?.eventsCompacted !== true) return;
+  if (state.fullTraceReplayInFlight.has(message.traceId)) return;
+  replayFullTrace(message.id, { quiet: true });
+}
+
+async function replayFullTrace(messageId, options = {}) {
+  const index = state.chatMessages.findIndex((message) => message.id === messageId);
+  if (index < 0) return false;
+  const message = state.chatMessages[index];
+  if (!message.traceId) return false;
+  if (state.fullTraceReplayInFlight.has(message.traceId)) return false;
+  state.fullTraceReplayInFlight.add(message.traceId);
+  try {
+    const response = await fetchJson(`/v1/agent/chat/trace/${encodeURIComponent(message.traceId)}`, {
+      timeoutMs: Math.min(Math.max(API_TIMEOUT_MS, 5000), FULL_TRACE_REPLAY_TIMEOUT_MS),
+      timeoutName: "Code Agent full trace replay"
+    });
+    if (!response.ok) return false;
+    const currentIndex = state.chatMessages.findIndex((item) => item.id === messageId);
+    if (currentIndex < 0) return false;
+    const current = state.chatMessages[currentIndex];
+    const runnerTrace = runnerTraceFromSnapshot({ ...response.data, fullTraceLoaded: true }, current.runnerTrace);
+    state.chatMessages[currentIndex] = {
+      ...current,
+      runnerTrace,
+      threadId: runnerTrace.threadId ?? current.threadId,
+      traceReplayStatus: `完整 trace 已回放：${runnerTrace.events?.length ?? 0} 个原始 event；${lastTraceEventLabel(runnerTrace)}`,
+      updatedAt: response.data?.updatedAt ?? new Date().toISOString()
+    };
+    if (options.quiet !== true) {
+      renderCodeAgentSummary();
+      renderConversation();
+      renderRecords(state.liveSurface);
+    } else {
+      renderConversation();
+    }
+    return true;
+  } finally {
+    state.fullTraceReplayInFlight.delete(message.traceId);
+  }
+}
+
 function lastTraceEventLabel(runnerTrace) {
   const event = runnerTrace?.lastEvent ?? (Array.isArray(runnerTrace?.events) ? runnerTrace.events.at(-1) : null);
   if (!event) return "lastEvent=none";
@@ -4247,15 +4303,18 @@ function messageTraceToolbar(message, trace, events, rows) {
   const toolbar = document.createElement("div");
   toolbar.className = "message-trace-toolbar";
   const rawTotal = Number.isInteger(trace?.eventCount) ? trace.eventCount : events.length;
-  const count = textSpan(messageTraceCountText(rawTotal, rows.length), "message-trace-count");
+  const count = textSpan(messageTraceCountText(trace, rawTotal, events.length, rows.length), "message-trace-count");
   toolbar.append(count);
   toolbar.append(traceActionButton("复制 JSON", () => copyTextToClipboard(messageTraceJson(message, trace, events)), "复制完整 trace JSON"));
   toolbar.append(traceActionButton("下载 trace", () => downloadTraceJson(message, trace, events), "下载完整 trace JSON 文件"));
   return toolbar;
 }
 
-function messageTraceCountText(rawTotal, displayTotal) {
-  return `显示全部 ${displayTotal} / 原始 ${rawTotal}`;
+function messageTraceCountText(trace, rawTotal, loadedTotal, readableTotal) {
+  if (trace?.eventsCompacted === true && trace?.fullTraceLoaded !== true) {
+    return `压缩窗口 ${readableTotal} 条可读事件 / 已载入原始 ${loadedTotal} / 后端原始 ${rawTotal}`;
+  }
+  return `显示全部可读事件 ${readableTotal} / 已载入原始 ${loadedTotal} / 后端原始 ${rawTotal}`;
 }
 
 function renderTraceEventList(list, rows) {
@@ -4283,6 +4342,7 @@ function installWorkbenchTestHooks() {
     seedTraceMessage,
     appendTraceEvents,
     traceScrollMetrics,
+    tracePanelText,
     setTraceScrollTop,
     setConversationScrollTop
   };
@@ -4296,7 +4356,9 @@ function seedTraceMessage(options = {}) {
   const traceId = options.traceId ?? "trc_scroll_contract";
   const messageId = options.messageId ?? "msg_scroll_contract";
   const count = Math.max(1, Number(options.count ?? 80));
-  const events = Array.from({ length: count }, (_, index) => testTraceEvent(traceId, index + 1));
+  const events = Array.isArray(options.events)
+    ? options.events.map((event, index) => normalizeTestTraceEvent(traceId, event, index + 1))
+    : Array.from({ length: count }, (_, index) => testTraceEvent(traceId, index + 1));
   state.chatMessages = [{
     id: messageId,
     role: "agent",
@@ -4307,14 +4369,29 @@ function seedTraceMessage(options = {}) {
     runnerTrace: {
       traceId,
       events,
-      eventCount: events.length,
-      lastEvent: events.at(-1),
+      eventCount: Number.isInteger(options.eventCount) ? options.eventCount : events.length,
+      eventsCompacted: options.eventsCompacted === true,
+      eventWindow: options.eventWindow ?? null,
+      fullTraceLoaded: options.fullTraceLoaded === true,
+      lastEvent: options.lastEvent ?? events.at(-1),
       waitingFor: "turn/completed"
     }
   }];
   renderConversation();
 }
 
+function normalizeTestTraceEvent(traceId, event, seq) {
+  return {
+    traceId,
+    seq,
+    createdAt: new Date(1779690000000 + seq * 1000).toISOString(),
+    ...event,
+    traceId: event?.traceId ?? traceId,
+    seq: event?.seq ?? seq,
+    createdAt: event?.createdAt ?? new Date(1779690000000 + seq * 1000).toISOString()
+  };
+}
+
 function appendTraceEvents(count = 1) {
   const message = state.chatMessages.find((item) => item.runnerTrace?.traceId);
   if (!message) return;
@@ -4353,6 +4430,15 @@ function traceScrollMetrics() {
   };
 }
 
+function tracePanelText() {
+  const conversation = el.conversationList;
+  return {
+    count: conversation.querySelector(".message-trace-count")?.textContent ?? "",
+    rows: [...conversation.querySelectorAll(".message-trace-row")].map((row) => row.textContent ?? ""),
+    bodies: [...conversation.querySelectorAll(".message-trace-body")].map((body) => body.textContent ?? "")
+  };
+}
+
 function setTraceScrollTop(top, { user = true } = {}) {
   const list = el.conversationList.querySelector(".message-trace-events[data-trace-ui-key]");
   if (!list) return traceScrollMetrics();
@@ -4381,8 +4467,8 @@ function traceDisplayRows(trace, events) {
   };
   const flushToolOutputRun = () => {
     if (toolOutputRun.length === 0) return;
-    const row = traceToolOutputSummaryRow(trace, toolOutputRun);
-    if (row) rows.push(row);
+    const outputRows = traceToolOutputSummaryRows(trace, toolOutputRun);
+    rows.push(...outputRows);
     toolOutputRun = [];
   };
   for (const event of events) {
@@ -4407,43 +4493,53 @@ function traceDisplayRows(trace, events) {
   return rows.length > 0 ? rows : events.map((event) => traceDisplayRow(trace, event, { includeNoise: true })).filter(Boolean);
 }
 
-function traceToolOutputSummaryRow(trace, events) {
+function traceToolOutputSummaryRows(trace, events) {
   const visibleEvents = events.filter(Boolean);
-  if (visibleEvents.length === 0) return null;
+  if (visibleEvents.length === 0) return [];
   const first = visibleEvents[0];
-  const last = visibleEvents.at(-1);
   const combined = visibleEvents.map((event) => rawTraceOutputText(event)).join("");
-  const parsed = parseGatewayJsonRpcOutput(combined);
+  const parsedItems = parseGatewayJsonRpcOutputs(combined);
+  if (parsedItems.length > 0) {
+    return parsedItems.map((parsed, index) => {
+      const { payload, result, dispatch } = parsed;
+      const event = visibleEvents[Math.min(index, visibleEvents.length - 1)] ?? first;
+      const clock = traceClock(event.createdAt);
+      const total = formatTraceDuration(traceRelativeMs(trace, event));
+      const chunkCount = index === 0 ? visibleEvents.length : 0;
+      const suffix = chunkCount > 0 ? ` chunks=${chunkCount}` : "";
+      const status = result.status ?? dispatch.dispatchStatus ?? "unknown";
+      const exitCode = Number.isInteger(dispatch.exitCode) ? dispatch.exitCode : null;
+      const ok = status === "succeeded" || status === "completed" || exitCode === 0;
+      const header = [
+        `${clock} total=${total}`,
+        ok ? "ok" : status === "timed_out" ? "timeout" : "fail",
+        "tool gateway.shell",
+        `status=${status}`,
+        result.operationId ? `op=${result.operationId}` : "op=null",
+        exitCode !== null ? `exit=${exitCode}` : null,
+        typeof dispatch.durationMs === "number" ? `s=${(dispatch.durationMs / 1000).toFixed(1)}` : null,
+        suffix.trim() || null
+      ].filter(Boolean).join(" ");
+      return {
+        seq: event.seq ?? null,
+        tone: ok ? "ok" : status === "timed_out" ? "warn" : "blocked",
+        header,
+        body: gatewayJsonRpcDisplayBody({ payload, result, dispatch, raw: combined })
+      };
+    });
+  }
   const clock = traceClock(first.createdAt);
   const total = formatTraceDuration(traceRelativeMs(trace, first));
-  if (parsed) {
-    const { payload, result, dispatch } = parsed;
-    const status = result.status ?? dispatch.dispatchStatus ?? "unknown";
-    const exitCode = Number.isInteger(dispatch.exitCode) ? dispatch.exitCode : null;
-    const ok = status === "succeeded" || status === "completed" || exitCode === 0;
-    const header = [
-      `${clock} total=${total}`,
-      ok ? "ok" : status === "timed_out" ? "timeout" : "fail",
-      "tool hardware.invoke.shell",
-      `status=${status}`,
-      result.operationId ? `op=${result.operationId}` : "op=null",
-      exitCode !== null ? `exit=${exitCode}` : null,
-      typeof dispatch.durationMs === "number" ? `s=${(dispatch.durationMs / 1000).toFixed(1)}` : null,
-      `chunks=${visibleEvents.length}`
-    ].filter(Boolean).join(" ");
-    return {
-      seq: first.seq ?? null,
-      tone: ok ? "ok" : status === "timed_out" ? "warn" : "blocked",
-      header,
-      body: gatewayJsonRpcDisplayBody({ payload, result, dispatch, raw: combined })
-    };
-  }
-  return {
+  return [{
     seq: first.seq ?? null,
     tone: "source",
     header: `${clock} total=${total} output cmd output chunks=${visibleEvents.length} out=${compactTraceSize(combined)}`,
     body: compactTraceTextTail(cleanTraceOutputText(combined), 1600)
-  };
+  }];
+}
+
+function traceToolOutputSummaryRow(trace, events) {
+  return traceToolOutputSummaryRows(trace, events)[0] ?? null;
 }
 
 function traceNoiseSummaryRow(trace, events) {
@@ -4454,7 +4550,7 @@ function traceNoiseSummaryRow(trace, events) {
   const total = formatTraceDuration(traceRelativeMs(trace, last));
   const assistantChunks = visibleEvents.filter((event) => isAssistantChunkTraceEvent(event));
   const label = assistantChunks.length === visibleEvents.length
-    ? `assistant stream x${visibleEvents.length}`
+    ? `assistant message x${visibleEvents.length}`
     : `trace noise x${visibleEvents.length}`;
   return {
     seq: last.seq ?? null,
@@ -4467,15 +4563,14 @@ function traceNoiseSummaryRow(trace, events) {
 function traceNoiseSummaryBody(events, assistantChunks) {
   if (assistantChunks.length > 0) {
     const text = assistantChunks
-      .map((event) => cleanTraceText(event.chunk))
-      .join("")
-      .trim();
+      .map((event) => String(event.chunk ?? ""))
+      .join("");
+    const message = cleanTraceText(text);
     const waitingFor = events.at(-1)?.waitingFor ? `waiting=${events.at(-1).waitingFor}` : null;
-    const recent = text ? compactTraceTextTail(text, 900) : null;
     return [
       `compressed=${assistantChunks.length} assistant chunks`,
       waitingFor,
-      recent ? `recent=${recent}` : null
+      message ? `message=${message}` : null
     ].filter(Boolean).join("\n");
   }
   const labels = new Map();
@@ -4575,19 +4670,56 @@ function rawTraceOutputText(event) {
   return String(event?.outputSummary ?? event?.chunk ?? event?.message ?? "");
 }
 
+function parseGatewayJsonRpcOutputs(text) {
+  const payloads = parseJsonObjects(text);
+  return payloads
+    .filter((payload) => payload && payload.jsonrpc === "2.0" && payload.result && typeof payload.result === "object")
+    .map((payload) => {
+      const result = payload.result;
+      const dispatch = result.dispatch && typeof result.dispatch === "object" ? result.dispatch : {};
+      if (!("gatewaySessionId" in result) && !("capabilityId" in result) && !("shellExecuted" in dispatch)) return null;
+      return { payload, result, dispatch };
+    })
+    .filter(Boolean);
+}
+
 function parseGatewayJsonRpcOutput(text) {
-  const payload = parseFirstJsonObject(text);
-  if (!payload || payload.jsonrpc !== "2.0" || !payload.result || typeof payload.result !== "object") return null;
-  const result = payload.result;
-  const dispatch = result.dispatch && typeof result.dispatch === "object" ? result.dispatch : {};
-  if (!("gatewaySessionId" in result) && !("capabilityId" in result) && !("shellExecuted" in dispatch)) return null;
-  return { payload, result, dispatch };
+  return parseGatewayJsonRpcOutputs(text)[0] ?? null;
+}
+
+function parseJsonObjects(text) {
+  const source = String(text ?? "");
+  const values = [];
+  let searchFrom = 0;
+  while (searchFrom < source.length) {
+    const start = source.indexOf("{", searchFrom);
+    if (start < 0) break;
+    const end = jsonObjectEnd(source, start);
+    if (end < 0) break;
+    try {
+      values.push(JSON.parse(source.slice(start, end + 1)));
+      searchFrom = end + 1;
+    } catch {
+      searchFrom = start + 1;
+    }
+  }
+  return values;
 }
 
 function parseFirstJsonObject(text) {
   const source = String(text ?? "");
   const start = source.indexOf("{");
   if (start < 0) return null;
+  const end = jsonObjectEnd(source, start);
+  if (end < 0) return null;
+  try {
+    return JSON.parse(source.slice(start, end + 1));
+  } catch {
+    return null;
+  }
+}
+
+function jsonObjectEnd(source, start) {
   let depth = 0;
   let inString = false;
   let escaped = false;
@@ -4610,14 +4742,10 @@ function parseFirstJsonObject(text) {
     if (char === "{") depth += 1;
     if (char === "}") depth -= 1;
     if (depth === 0) {
-      try {
-        return JSON.parse(source.slice(start, index + 1));
-      } catch {
-        return null;
-      }
+      return index;
     }
   }
-  return null;
+  return -1;
 }
 
 function gatewayJsonRpcDisplayBody({ payload, result, dispatch, raw }) {
diff --git a/web/hwlab-cloud-web/scripts/check.mjs b/web/hwlab-cloud-web/scripts/check.mjs
index dd203112..30133be9 100644
--- a/web/hwlab-cloud-web/scripts/check.mjs
+++ b/web/hwlab-cloud-web/scripts/check.mjs
@@ -881,9 +881,15 @@ assert.match(app, /function refreshTraceAfterResultPollError/);
 assert.match(app, /function messageTracePanel/);
 assert.match(app, /function messageTraceToolbar/);
 assert.match(app, /function messageTraceCountText/);
-assert.match(app, /显示全部\s+\$\{displayTotal\}\s+\/\s+原始\s+\$\{rawTotal\}/);
+assert.match(app, /显示全部可读事件\s+\$\{readableTotal\}\s+\/\s+已载入原始\s+\$\{loadedTotal\}\s+\/\s+后端原始\s+\$\{rawTotal\}/);
+assert.match(app, /压缩窗口\s+\$\{readableTotal\}\s+条可读事件\s+\/\s+已载入原始\s+\$\{loadedTotal\}\s+\/\s+后端原始\s+\$\{rawTotal\}/);
+assert.match(app, /FULL_TRACE_REPLAY_TIMEOUT_MS\s*=\s*15000/);
+assert.match(app, /fullTraceReplayInFlight:\s*new Set\(\)/);
+assert.match(app, /function maybeReplayFullTraceForMessage/);
+assert.match(app, /function replayFullTrace/);
 assert.match(app, /eventsCompacted:\s*snapshot\.eventsCompacted === true/);
 assert.match(app, /eventWindow:\s*snapshot\.eventWindow/);
+assert.match(app, /fullTraceLoaded:/);
 assert.match(app, /eventCount:\s*Number\.isInteger\(trace\?\.eventCount\)/);
 assert.match(app, /traceDetailsOpen:\s*new Map\(\)/);
 assert.match(app, /conversationRenderVersion:\s*0/);
@@ -896,6 +902,7 @@ assert.match(app, /state\.conversationRenderVersion \+= 1/);
 assert.match(app, /state\.conversationScrollPosition\s*=\s*\{\s*top:\s*0,\s*left:\s*0\s*\}/);
 assert.match(app, /state\.traceScrollPositions\.clear\(\)/);
 assert.match(app, /state\.traceScrollUserActiveUntil\.clear\(\)/);
+assert.match(app, /state\.fullTraceReplayInFlight\.clear\(\)/);
 assert.match(app, /function messageTraceUiKey/);
 assert.match(app, /function defaultTraceDetailsOpen/);
 assert.match(app, /initConversationScrollMemory\(\)/);
@@ -933,13 +940,16 @@ assert.match(app, /function installWorkbenchTestHooks/);
 assert.match(app, /hwlab-test-hooks/);
 assert.match(app, /function traceDisplayRows/);
 assert.match(app, /function traceDisplayRow/);
+assert.match(app, /function traceToolOutputSummaryRows/);
 assert.match(app, /function traceToolOutputSummaryRow/);
+assert.match(app, /function parseGatewayJsonRpcOutputs/);
 assert.match(app, /function parseGatewayJsonRpcOutput/);
-assert.match(app, /tool hardware\.invoke\.shell/);
+assert.match(app, /tool gateway\.shell/);
 assert.match(app, /function traceNoiseSummaryRow/);
 assert.match(styles, /max-height:\s*min\(520px,\s*54dvh\)/);
-assert.match(app, /assistant stream x\$\{visibleEvents\.length\}/);
+assert.match(app, /assistant message x\$\{visibleEvents\.length\}/);
 assert.match(app, /compressed=\$\{assistantChunks\.length\} assistant chunks/);
+assert.match(app, /message=\$\{text\}/);
 assert.match(app, /waiting first assistant token/);
 assert.match(app, /function compactTraceTextTail/);
 assert.match(app, /function isAssistantChunkTraceEvent/);
diff --git a/web/hwlab-cloud-web/scripts/trace-scroll.test.mjs b/web/hwlab-cloud-web/scripts/trace-scroll.test.mjs
index 69b0af60..a93cf2ed 100644
--- a/web/hwlab-cloud-web/scripts/trace-scroll.test.mjs
+++ b/web/hwlab-cloud-web/scripts/trace-scroll.test.mjs
@@ -64,10 +64,116 @@ test("trace scroll stays user controlled while trace updates append", async () =
   }
 });
 
+test("trace display full means complete readable timeline, not compacted result window", async () => {
+  const server = await startStaticServer(webRoot);
+  const browser = await chromium.launch({ headless: true });
+  try {
+    const page = await browser.newPage({
+      viewport: { width: 1366, height: 768 },
+      deviceScaleFactor: 1
+    });
+    await page.goto(`${server.url}?hwlab-test-hooks=1`, { waitUntil: "domcontentloaded", timeout: 15000 });
+    await login(page);
+    await page.waitForFunction(() => window.__hwlabWorkbenchTestHooks, null, { timeout: 12000 });
+
+    await page.evaluate(() => {
+      const gatewayPayload = (id, operationId, status = "succeeded") => JSON.stringify({
+        jsonrpc: "2.0",
+        id,
+        result: {
+          accepted: true,
+          status,
+          operationId,
+          gatewaySessionId: "gws_test",
+          resourceId: "res_windows_host",
+          capabilityId: "cap_windows_cmd_exec",
+          dispatch: {
+            shellExecuted: true,
+            dispatchStatus: status,
+            exitCode: status === "succeeded" ? 0 : 1,
+            durationMs: 1200,
+            command: "powershell -EncodedCommand <redacted>",
+            stdout: `stdout for ${operationId}`,
+            stderr: ""
+          }
+        }
+      });
+      window.__hwlabWorkbenchTestHooks.seedTraceMessage({
+        eventsCompacted: true,
+        eventCount: 600,
+        events: [
+          {
+            label: "request:accepted-short-connection",
+            status: "started",
+            message: "accepted"
+          },
+          {
+            label: "assistant:chunk",
+            type: "assistant_message",
+            status: "chunk",
+            chunk: "first readable sentence "
+          },
+          {
+            label: "assistant:chunk",
+            type: "assistant_message",
+            status: "chunk",
+            chunk: "middle detail "
+          },
+          {
+            label: "assistant:chunk",
+            type: "assistant_message",
+            status: "chunk",
+            chunk: "final conclusion"
+          },
+          {
+            label: "item/commandExecution/outputDelta",
+            type: "tool_call",
+            status: "output_chunk",
+            outputSummary: `${gatewayPayload("req_1", "op_one")}${gatewayPayload("req_2", "op_two")}`
+          }
+        ]
+      });
+    });
+    await page.waitForSelector(".message-trace-count", { timeout: 12000 });
+    const compacted = await tracePanelText(page);
+    assert.match(compacted.count, /压缩窗口/);
+    assert.doesNotMatch(compacted.count, /显示全部/);
+    assert.equal(compacted.rows.filter((row) => row.includes("tool gateway.shell")).length, 2, compacted.rows.join("\n---\n"));
+    assert.ok(compacted.rows.some((row) => row.includes("op=op_one")), compacted.rows.join("\n"));
+    assert.ok(compacted.rows.some((row) => row.includes("op=op_two")), compacted.rows.join("\n"));
+    assert.match(compacted.bodies.join("\n"), /first readable sentence middle detail final conclusion/);
+
+    await page.evaluate(() => {
+      const message = window.__hwlabWorkbenchTestHooks.tracePanelText();
+      const rows = message.rows.length;
+      window.__hwlabWorkbenchTestHooks.seedTraceMessage({
+        fullTraceLoaded: true,
+        events: Array.from({ length: rows }, (_, index) => ({
+          label: `full:readable:${index + 1}`,
+          status: "completed",
+          message: `full readable event ${index + 1}`
+        }))
+      });
+    });
+    const full = await tracePanelText(page);
+    assert.match(full.count, /显示全部可读事件/);
+    assert.doesNotMatch(full.count, /压缩窗口/);
+
+    await page.close();
+  } finally {
+    await browser.close();
+    await server.close();
+  }
+});
+
 async function traceMetrics(page) {
   return page.evaluate(() => window.__hwlabWorkbenchTestHooks.traceScrollMetrics());
 }
 
+async function tracePanelText(page) {
+  return page.evaluate(() => window.__hwlabWorkbenchTestHooks.tracePanelText());
+}
+
 async function login(page) {
   await page.waitForSelector("#login-shell, [data-app-shell]", { timeout: 12000 });
   const loginVisible = await page.locator("#login-shell").isVisible().catch(() => false);