diff --git a/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.test.ts b/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.test.ts
index 0dcbe9c7..4762e53f 100644
--- a/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.test.ts
+++ b/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.test.ts
@@ -46,6 +46,41 @@ describe("WorkbenchMessageCard startup visibility", () => {
   });
 });
 
+describe("WorkbenchMessageCard metadata layout", () => {
+  it("renders recent activity at the footer left and elapsed time at the footer right", () => {
+    const now = Date.now();
+    const wrapper = mount(WorkbenchMessageCard, {
+      props: {
+        detailEnabled: false,
+        message: {
+          id: "msg_timing_layout",
+          messageId: "msg_timing_layout",
+          role: "agent",
+          title: "Code Agent",
+          text: "",
+          status: "running",
+          traceId: "trc_timing_layout",
+          sessionId: "ses_timing_layout",
+          createdAt: new Date(now - 10_000).toISOString(),
+          timing: {
+            startedAt: new Date(now - 10_000).toISOString(),
+            lastEventAt: new Date(now - 4_000).toISOString()
+          }
+        }
+      },
+      global: { stubs: componentStubs() }
+    });
+
+    const footer = wrapper.get(".message-meta-footer");
+    expect(wrapper.find("article > header").exists()).toBe(false);
+    expect(footer.get(".message-activity-meta").text()).toMatch(/^最近更新：\d+ 秒前$/u);
+    expect(footer.get(".message-duration-meta").text()).toMatch(/^耗时 \d+ 秒$/u);
+    expect(footer.get(".message-footer-timing").element.firstElementChild).toBe(footer.get(".message-activity-meta").element);
+    expect(footer.get(".message-footer-timing").element.lastElementChild).toBe(footer.get(".message-duration-meta").element);
+    wrapper.unmount();
+  });
+});
+
 describe("WorkbenchMessageCard semantic retry visibility", () => {
   it("shows Git mirror clone progress as runtime preparation", () => {
     const wrapper = mount(WorkbenchMessageCard, {
diff --git a/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.vue b/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.vue
index 8ad56495..e7d78afd 100644
--- a/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.vue
+++ b/web/hwlab-cloud-web/src/components/workbench/WorkbenchMessageCard.vue
@@ -78,7 +78,7 @@ function messageActivityMeta(message: ChatMessage): { text: string; label: strin
   const ageMs = durationSince(timing?.lastEventAt);
   if (ageMs === null) return null;
   const value = formatDuration(ageMs) + "前";
-  return { text: `最近 ${value}`, label: `最近事件：${value}` };
+  return { text: `最近更新：${value}`, label: `最近更新：${value}` };
 }
 
 function messageTimingForDisplay(message: ChatMessage): ChatMessage["timing"] {
@@ -136,18 +136,6 @@ function traceStorageKey(message: ChatMessage): string {
     :data-trace-id="message.traceId || message.runnerTrace?.traceId || undefined"
     :data-turn-id="message.turnId || message.traceId || message.runnerTrace?.traceId || undefined"
   >
-    <header v-if="message.role !== 'user'">
-      <div class="message-header-main">
-        <strong>{{ message.title }}</strong>
-        <span v-if="durationMeta" class="message-timing-meta message-duration-meta" :aria-label="durationMeta.label" :title="durationMeta.label">{{ durationMeta.text }}</span>
-      </div>
-      <div class="message-header-actions">
-        <span v-if="activityMeta" class="message-activity-meta" :aria-label="activityMeta.label" :title="activityMeta.label">{{ activityMeta.text }}</span>
-        <span v-if="running" class="agent-running-indicator" aria-label="运行中" role="status"><span aria-hidden="true" /></span>
-        <StatusBadge v-if="showStatusBadge(message)" :status="message.status" />
-        <button v-if="detailEnabled && message.role === 'agent'" class="message-detail-button" type="button" aria-label="运行详情" title="运行详情" @click="emit('details', message)">!</button>
-      </div>
-    </header>
     <section v-if="semanticRuntimeStatus" class="semantic-failure-banner" :data-tone="semanticRuntimeStatus.tone" :data-emphasis="semanticRuntimeStatus.emphasis" role="status" aria-live="polite" :title="semanticRuntimeStatus.code ? `${semanticRuntimeStatus.title} · ${semanticRuntimeStatus.detail} · ${semanticRuntimeStatus.code}` : undefined">
       <span class="semantic-status-marker" aria-hidden="true" />
       <strong>{{ semanticRuntimeStatus.title }}</strong>
@@ -158,6 +146,20 @@ function traceStorageKey(message: ChatMessage): string {
     <LoadingState v-if="isAwaitingAgentBody(message)" class="message-loading" label="启动中..." compact />
     <MessageMarkdown v-if="visibleText" class="message-text" :source="visibleText" />
     <ApiErrorDiagnostic v-if="diagnostic.visible" class="message-diagnostic projection-diagnostic" :error="diagnostic.text" :api-error="diagnostic.apiError" :diagnostic="diagnostic.diagnostic" :show-message="diagnostic.showMessage" compact />
+    <footer v-if="message.role !== 'user'" class="message-meta-footer">
+      <div class="message-header-main">
+        <strong>{{ message.title }}</strong>
+      </div>
+      <div class="message-header-actions">
+        <span v-if="running" class="agent-running-indicator" aria-label="运行中" role="status"><span aria-hidden="true" /></span>
+        <StatusBadge v-if="showStatusBadge(message)" :status="message.status" />
+        <button v-if="detailEnabled && message.role === 'agent'" class="message-detail-button" type="button" aria-label="运行详情" title="运行详情" @click="emit('details', message)">!</button>
+      </div>
+      <div class="message-footer-timing">
+        <span v-if="activityMeta" class="message-activity-meta" :aria-label="activityMeta.label" :title="activityMeta.label">{{ activityMeta.text }}</span>
+        <span v-if="durationMeta" class="message-timing-meta message-duration-meta" :aria-label="durationMeta.label" :title="durationMeta.label">{{ durationMeta.text }}</span>
+      </div>
+    </footer>
   </article>
 </template>
 
diff --git a/web/hwlab-cloud-web/src/styles/workbench.css b/web/hwlab-cloud-web/src/styles/workbench.css
index 7ed1be8e..e1b9df6a 100644
--- a/web/hwlab-cloud-web/src/styles/workbench.css
+++ b/web/hwlab-cloud-web/src/styles/workbench.css
@@ -493,7 +493,7 @@
   line-height: 1.4;
 }
 
-.message-card header,
+.message-meta-footer,
 .trace-timeline header {
   display: flex;
   min-width: 0;
@@ -502,6 +502,14 @@
   gap: 10px;
 }
 
+.message-meta-footer {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  margin-top: 6px;
+  border-top: 1px solid #e2e8f0;
+  padding-top: 6px;
+}
+
 .message-header-main {
   display: flex;
   min-width: 0;
@@ -554,6 +562,24 @@
   gap: 8px;
 }
 
+.message-footer-timing {
+  display: grid;
+  grid-column: 1 / -1;
+  grid-template-columns: minmax(0, 1fr) auto;
+  min-width: 0;
+  align-items: center;
+  gap: 8px;
+}
+
+.message-footer-timing .message-activity-meta {
+  justify-content: flex-start;
+}
+
+.message-footer-timing .message-duration-meta {
+  justify-content: flex-end;
+  text-align: right;
+}
+
 .message-detail-button {
   display: inline-flex;
   width: 22px;
diff --git a/web/hwlab-cloud-web/tests/workbench-e2e/specs/message-timing.spec.ts b/web/hwlab-cloud-web/tests/workbench-e2e/specs/message-timing.spec.ts
index 062a710b..db2dbf0f 100644
--- a/web/hwlab-cloud-web/tests/workbench-e2e/specs/message-timing.spec.ts
+++ b/web/hwlab-cloud-web/tests/workbench-e2e/specs/message-timing.spec.ts
@@ -8,10 +8,10 @@ test("Code Agent message headers render canonical timing metadata", async ({ pag
   await gotoWorkbench(page, "/workbench/sessions/ses_running");
 
   const running = page.locator(`${selectors.messageCard}[data-role="agent"][data-status="running"]`).first();
-  await expect(running.locator(`.message-header-main ${selectors.messageDurationMeta}`)).toContainText("耗时 4 秒");
-  await expect(running.locator(`.message-header-actions ${selectors.messageActivityMeta}`)).toContainText("最近 0 秒前");
+  await expect(running.locator(`.message-meta-footer ${selectors.messageDurationMeta}`)).toContainText("耗时 4 秒");
+  await expect(running.locator(`.message-meta-footer ${selectors.messageActivityMeta}`)).toContainText("最近更新：0 秒前");
   await expect(running.locator(selectors.messageDurationMeta)).toHaveAttribute("aria-label", "总耗时：4 秒");
-  await expect(running.locator(selectors.messageActivityMeta)).toHaveAttribute("aria-label", "最近事件：0 秒前");
+  await expect(running.locator(selectors.messageActivityMeta)).toHaveAttribute("aria-label", "最近更新：0 秒前");
   await expect(running.locator(selectors.messageDurationMeta)).not.toContainText("最近");
 
   await page.clock.fastForward(5000);