diff --git a/internal/cloud/code-agent-agentrun-adapter.ts b/internal/cloud/code-agent-agentrun-adapter.ts
index 734ef3a5..d21600de 100644
--- a/internal/cloud/code-agent-agentrun-adapter.ts
+++ b/internal/cloud/code-agent-agentrun-adapter.ts
@@ -233,8 +233,7 @@ export function initialAgentRunChatResult({ params = {}, options = {}, traceId }
     sessionId: safeSessionId(params.sessionId) || agentRunSessionId(traceId),
     threadId: safeOpaqueId(params.threadId) || null,
     messageId: `msg_${safeTraceId(traceId)?.slice(4) || randomUUID()}`,
-    createdAt: timestamp,
-    updatedAt: timestamp,
+    ...agentRunAdmissionTimingFields(timestamp),
     provider: providerForBackendProfile(backendProfile),
     model: modelForBackendProfile(backendProfile, env),
     backend: backendForBackendProfile(backendProfile),
@@ -258,6 +257,28 @@ export function initialAgentRunChatResult({ params = {}, options = {}, traceId }
   };
 }
 
+function agentRunAdmissionTimingFields(value) {
+  const admittedAt = timestampIsoOrNow(value);
+  const timing = {
+    startedAt: admittedAt,
+    lastEventAt: admittedAt,
+    finishedAt: null,
+    durationMs: null,
+    observedAt: admittedAt,
+    lastEventAgeMs: 0,
+    valuesRedacted: true
+  };
+  return {
+    createdAt: admittedAt,
+    updatedAt: admittedAt,
+    timing,
+    startedAt: admittedAt,
+    lastEventAt: admittedAt,
+    finishedAt: null,
+    durationMs: null
+  };
+}
+
 export async function submitAgentRunChatTurn({ params = {}, options = {}, traceId, traceStore = defaultCodeAgentTraceStore, results }) {
   const env = options.env ?? process.env;
   const managerUrl = resolveAgentRunManagerUrl(env);
@@ -3222,6 +3243,11 @@ function nowIso(now) {
   return typeof now === "function" ? now() : new Date().toISOString();
 }
 
+function timestampIsoOrNow(value = null) {
+  const parsed = Date.parse(String(value ?? ""));
+  return Number.isFinite(parsed) ? new Date(parsed).toISOString() : new Date().toISOString();
+}
+
 function redactUrl(value) {
   try {
     const url = new URL(value);
diff --git a/internal/cloud/server-code-agent-http.ts b/internal/cloud/server-code-agent-http.ts
index f47c6427..65f49809 100644
--- a/internal/cloud/server-code-agent-http.ts
+++ b/internal/cloud/server-code-agent-http.ts
@@ -113,8 +113,9 @@ export async function handleCodeAgentChatHttp(request, response, options) {
 
   if (codeAgentChatShortConnectionRequested(request, params, options)) {
     if (perf) perf.recordPhase({ phase: "short_connection_accept", durationMs: 0, outcome: "ok" });
+    let submitted = null;
     try {
-      await submitCodeAgentChatTurn({
+      submitted = await submitCodeAgentChatTurn({
         params: nativeSessionChatParams,
         options,
         traceId
@@ -129,6 +130,7 @@ export async function handleCodeAgentChatHttp(request, response, options) {
     const traceUrl = `/v1/agent/traces/${encodeURIComponent(traceId)}`;
     const turnUrl = `/v1/agent/turns/${encodeURIComponent(traceId)}`;
     const statusCode = 202;
+    const admittedTiming = codeAgentAdmissionTimingFields(submitted?.createdAt ?? submitted?.updatedAt);
     void emitCodeAgentOtelSpan("POST /v1/agent/chat", traceId, options.env ?? process.env, {
       kind: 2,
       attributes: { "http.method": "POST", "http.route": "/v1/agent/chat", "http.status_code": statusCode, sessionId: safeSessionId(nativeSessionChatParams.sessionId) || null, turnId: lifecycle.turnId }
@@ -142,6 +144,13 @@ export async function handleCodeAgentChatHttp(request, response, options) {
       ...codeAgentOtelTraceFields(traceId, options.env ?? process.env),
       ...lifecycle,
       sessionId: safeSessionId(nativeSessionChatParams.sessionId) || null,
+      createdAt: submitted?.createdAt ?? admittedTiming.createdAt,
+      updatedAt: submitted?.updatedAt ?? admittedTiming.updatedAt,
+      timing: submitted?.timing ?? admittedTiming.timing,
+      startedAt: submitted?.startedAt ?? admittedTiming.startedAt,
+      lastEventAt: submitted?.lastEventAt ?? admittedTiming.lastEventAt,
+      finishedAt: submitted?.finishedAt ?? admittedTiming.finishedAt,
+      durationMs: submitted?.durationMs ?? admittedTiming.durationMs,
       traceUrl,
       resultUrl: `/v1/agent/chat/result/${encodeURIComponent(traceId)}`,
       turnUrl,
@@ -779,6 +788,7 @@ function firstNonEmptyValue(...values) {
 async function submitCodeAgentChatTurn({ params, options, traceId }) {
   const traceStore = options.traceStore ?? defaultCodeAgentTraceStore;
   const results = options.codeAgentChatResults ?? createCodeAgentChatResultStore();
+  const timestamp = new Date().toISOString();
   const acceptedPayload = {
     accepted: true,
     status: "running",
@@ -789,7 +799,7 @@ async function submitCodeAgentChatTurn({ params, options, traceId }) {
     sessionId: safeSessionId(params.sessionId) || null,
     threadId: safeOpaqueId(params.threadId) || null,
     projectId: params.projectId ?? null,
-    updatedAt: new Date().toISOString()
+    ...codeAgentAdmissionTimingFields(timestamp)
   };
   await recordCodeAgentTurnAdmission({ payload: acceptedPayload, params, options, traceId });
   results.set(traceId, annotateOwner(acceptedPayload, params));
@@ -858,7 +868,7 @@ async function submitCodeAgentChatTurn({ params, options, traceId }) {
       }
     };
     setImmediate(() => { run(); });
-    return;
+    return annotateOwner(acceptedPayload, params);
   }
   traceStore.ensure(traceId, {
     runnerKind: "codex-app-server-stdio-runner",
@@ -945,6 +955,7 @@ async function submitCodeAgentChatTurn({ params, options, traceId }) {
   setImmediate(() => {
     run();
   });
+  return annotateOwner(acceptedPayload, params);
 }
 
 async function recordCodeAgentTurnAdmission({ payload = {}, params = {}, options = {}, traceId } = {}) {
@@ -1070,8 +1081,7 @@ function codeAgentAdmittedFailureBasePayload({ params = {}, options = {}, traceI
     conversationId: safeConversationId(params.conversationId) || null,
     sessionId: safeSessionId(params.sessionId) || null,
     threadId: safeOpaqueId(params.threadId) || null,
-    createdAt: now,
-    updatedAt: now,
+    ...codeAgentAdmissionTimingFields(now),
     provider: codeAgentAgentRunAdapterEnabled(options.env ?? process.env) ? "agentrun" : "codex-stdio",
     model: options.env?.HWLAB_CODE_AGENT_MODEL ?? "unknown",
     backend: codeAgentAgentRunAdapterEnabled(options.env ?? process.env) ? "agentrun-v01" : "hwlab-cloud-api/code-agent-chat",
@@ -1079,6 +1089,79 @@ function codeAgentAdmittedFailureBasePayload({ params = {}, options = {}, traceI
   };
 }
 
+function codeAgentAdmissionTimingFields(value = null) {
+  const admittedAt = timestampIsoOrNow(value);
+  const timing = {
+    startedAt: admittedAt,
+    lastEventAt: admittedAt,
+    finishedAt: null,
+    durationMs: null,
+    observedAt: admittedAt,
+    lastEventAgeMs: 0,
+    valuesRedacted: true
+  };
+  return {
+    createdAt: admittedAt,
+    updatedAt: admittedAt,
+    timing,
+    startedAt: admittedAt,
+    lastEventAt: admittedAt,
+    finishedAt: null,
+    durationMs: null
+  };
+}
+
+function codeAgentResultTimingFields(...sources) {
+  const records = sources.filter((source) => source && typeof source === "object");
+  const timingSource = records.map((source) => source.timing).find((timing) => timing && typeof timing === "object") ?? {};
+  const startedAt = firstTimestampIso(timingSource.startedAt, ...records.map((source) => source.startedAt), ...records.map((source) => source.createdAt));
+  const lastEventAt = firstLatestTimestampIso(timingSource.lastEventAt, ...records.map((source) => source.lastEventAt), ...records.map((source) => source.updatedAt), ...records.map((source) => source.createdAt));
+  const finishedAt = firstLatestTimestampIso(timingSource.finishedAt, ...records.map((source) => source.finishedAt), ...records.map((source) => source.completedAt));
+  const durationMs = numberOrNull(timingSource.durationMs ?? records.map((source) => source.durationMs).find((value) => numberOrNull(value) !== null));
+  const observedAt = timestampIsoOrNull(timingSource.observedAt);
+  const lastEventAgeMs = numberOrNull(timingSource.lastEventAgeMs);
+  if (!startedAt && !lastEventAt && !finishedAt && durationMs === null && lastEventAgeMs === null) return {};
+  const timing = {
+    ...(timingSource && typeof timingSource === "object" ? timingSource : {}),
+    startedAt: startedAt ?? null,
+    lastEventAt: lastEventAt ?? null,
+    finishedAt: finishedAt ?? null,
+    durationMs,
+    observedAt: observedAt ?? null,
+    lastEventAgeMs,
+    valuesRedacted: timingSource.valuesRedacted !== false
+  };
+  return {
+    timing,
+    startedAt: timing.startedAt,
+    lastEventAt: timing.lastEventAt,
+    finishedAt: timing.finishedAt,
+    durationMs: timing.durationMs
+  };
+}
+
+function firstTimestampIso(...values) {
+  for (const value of values) {
+    const timestamp = timestampIsoOrNull(value);
+    if (timestamp) return timestamp;
+  }
+  return null;
+}
+
+function firstLatestTimestampIso(...values) {
+  let latest = null;
+  let latestMs = Number.NEGATIVE_INFINITY;
+  for (const value of values) {
+    const timestamp = timestampIsoOrNull(value);
+    if (!timestamp) continue;
+    const ms = Date.parse(timestamp);
+    if (!Number.isFinite(ms) || ms < latestMs) continue;
+    latest = timestamp;
+    latestMs = ms;
+  }
+  return latest;
+}
+
 async function settleAdmittedCodeAgentFailure({ base = {}, params = {}, options = {}, traceId, results, failure = {}, traceLabel = "code-agent:failed" } = {}) {
   const traceStore = options.traceStore ?? defaultCodeAgentTraceStore;
   const error = failure.payload?.error ?? failure.error ?? {};
@@ -2225,6 +2308,7 @@ function codeAgentTurnStatusPayload({ traceId, result, snapshot, resultPollError
   const running = isTurnRunningStatus(status);
   const terminal = isTurnTerminalStatus(status);
   const runnerTrace = snapshotObject && snapshotObject.status !== "missing" ? snapshotObject : resultObject?.runnerTrace ?? null;
+  const timingFields = codeAgentResultTimingFields(resultObject, snapshotObject, runnerTrace);
   return {
     ok: found,
     action: "code-agent.turn.status",
@@ -2237,7 +2321,8 @@ function codeAgentTurnStatusPayload({ traceId, result, snapshot, resultPollError
     conversationId: safeConversationId(resultObject?.conversationId ?? snapshotObject?.conversationId) || null,
     sessionId: safeSessionId(resultObject?.sessionId ?? resultObject?.session?.sessionId ?? snapshotObject?.sessionId) || null,
     threadId: safeOpaqueId(resultObject?.threadId ?? resultObject?.session?.threadId ?? snapshotObject?.threadId) || null,
-    updatedAt: textValue(resultObject?.updatedAt ?? resultObject?.agentRun?.updatedAt ?? snapshotObject?.updatedAt) || null,
+    updatedAt: textValue(resultObject?.updatedAt ?? resultObject?.agentRun?.updatedAt ?? snapshotObject?.updatedAt ?? timingFields.lastEventAt ?? timingFields.startedAt) || null,
+    ...timingFields,
     lastEventLabel: textValue(snapshotObject?.lastEventLabel ?? runnerTrace?.lastEventLabel ?? lastEvent?.label ?? lastEvent?.type) || null,
     waitingFor: textValue(snapshotObject?.waitingFor ?? runnerTrace?.waitingFor) || null,
     resultUrl: `/v1/agent/chat/result/${encodeURIComponent(traceId)}`,
@@ -2970,6 +3055,16 @@ function textValue(value) {
   return String(value ?? "").trim();
 }
 
+function timestampIsoOrNow(value = null) {
+  const parsed = Date.parse(String(value ?? ""));
+  return Number.isFinite(parsed) ? new Date(parsed).toISOString() : new Date().toISOString();
+}
+
+function timestampIsoOrNull(value = null) {
+  const parsed = Date.parse(String(value ?? ""));
+  return Number.isFinite(parsed) ? new Date(parsed).toISOString() : null;
+}
+
 function codeAgentSessionOwnerEvidence(payload = {}, params = {}) {
   const traceId = payload.traceId ?? params.traceId ?? null;
   const finalResponse = codeAgentFinalResponseEvidence(payload, traceId);
diff --git a/web/hwlab-cloud-web/src/stores/workbench.ts b/web/hwlab-cloud-web/src/stores/workbench.ts
index 0d6482ba..9ba3d642 100644
--- a/web/hwlab-cloud-web/src/stores/workbench.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench.ts
@@ -767,8 +767,9 @@ function nonBlockingProjection(projection: ProjectionDiagnostic | null): Project
     const sessionId = composer.value.sessionId;
     const threadId = composer.value.threadId;
     const providerThreadId = providerThreadIdForRequest(threadId);
-    const user = makeMessage("user", value, "sent", { traceId: steerTraceId ?? traceId, sessionId, threadId, title: steerMode ? "用户引导" : "用户" });
-    const pending = makeMessage("agent", "", "running", { traceId, sessionId, threadId, title: "Code Agent", retryInput: value, traceAutoLifecycle: "running" });
+    const submittedAt = new Date().toISOString();
+    const user = makeMessage("user", value, "sent", { traceId: steerTraceId ?? traceId, sessionId, threadId, title: steerMode ? "用户引导" : "用户", createdAt: submittedAt, updatedAt: submittedAt });
+    const pending = makeMessage("agent", "", "running", { traceId, sessionId, threadId, title: "Code Agent", retryInput: value, traceAutoLifecycle: "running", createdAt: submittedAt, updatedAt: submittedAt, ...optimisticRunningTimingPatch(submittedAt) });
     appendActiveMessages(user, pending);
     startWorkbenchSubmitJourney({ traceId, sessionId, entry: submitEntry, backend: providerProfile.value, transport: "sse" });
     chatPending.value = true;
@@ -1456,6 +1457,17 @@ function nonBlockingProjection(projection: ProjectionDiagnostic | null): Project
     return { ...patch, timing, startedAt: timing.startedAt ?? null, lastEventAt: timing.lastEventAt ?? null, finishedAt: null, durationMs: null };
   }
 
+  function optimisticRunningTimingPatch(startedAt: string): Partial<ChatMessage> {
+    const timing = {
+      startedAt,
+      lastEventAt: startedAt,
+      finishedAt: null,
+      durationMs: null,
+      valuesRedacted: true,
+    } as WorkbenchTurnTimingProjection;
+    return { timing, startedAt, lastEventAt: startedAt, finishedAt: null, durationMs: null };
+  }
+
   async function clearActiveTrace(traceId: string, reason: string): Promise<void> {
     if (currentRequest.value?.traceId === traceId) currentRequest.value = null;
   }