diff --git a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
index 17abbe77..3243636f 100644
--- a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
+++ b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
@@ -112,8 +112,6 @@ const reportPaneOpen = computed(() => Boolean(report.reportPreview.value));
 const workbenchLaunchEnabled = computed(() => launch.isLaunchEnabled(source.navigation.value));
 const launchButtonDisabled = computed(() => !selectedTask.value || !workbenchLaunchEnabled.value || launch.launchLoading.value);
 const selectedSourceCanReindex = computed(() => Boolean(selectedSourceId.value && !taskData.taskLoading.value && !source.sourceReindexLoading.value));
-const selectedTaskLabel = computed(() => selectedTask.value ? `${selectedTask.value.taskId || ''} ${selectedTask.value.title || ''}`.trim() : "");
-
 function reportLinksOnly(links: MdtodoTaskLinkRecord[]): MdtodoTaskLinkRecord[] {
   return links.filter((link) => link.kind === "markdown-report");
 }
@@ -398,17 +396,6 @@ function setError(err: unknown): void {
 
 <template>
   <section class="route-stack mdtodo-page" data-testid="project-management-mdtodo">
-    <header class="mdtodo-framebar">
-      <div class="mdtodo-title-lockup">
-        <span>Project Management</span>
-        <strong>MDTODO</strong>
-      </div>
-      <div class="mdtodo-route-chip">
-        <span>{{ selectedFileName }}</span>
-        <small v-if="selectedTask">{{ selectedTask.taskId }} · {{ selectedTask.title }}</small>
-      </div>
-    </header>
-
     <LoadingState v-if="loading && !source.sources.value.length" class="mdtodo-route-loading" label="加载 MDTODO source" />
     <section v-else-if="error" class="data-panel mdtodo-error" data-testid="project-management-error">
       <EmptyState title="MDTODO 加载失败" :description="error" :api-error="apiError" :diagnostic="diagnostic" action-label="重试" @action="loadPage" />
@@ -422,8 +409,6 @@ function setError(err: unknown): void {
         :selected-file-ref="selectedFileRef"
         :file-loading="taskData.taskLoading.value"
         :reindex-loading="source.sourceReindexLoading.value"
-        :selected-file-name="selectedFileName"
-        :selected-task-label="selectedTaskLabel"
         @update:selected-source-id="selectedSourceId = $event"
         @update:selected-file-ref="selectFile($event)"
         @open-source-config="openSourceConfig"
@@ -577,25 +562,13 @@ function setError(err: unknown): void {
 </template>
 
 <style scoped>
-.mdtodo-page { display: grid; height: calc(100dvh - 68px); max-height: calc(100dvh - 68px); min-width: 0; min-height: 0; align-content: stretch; grid-template-rows: auto auto auto minmax(0, 1fr); gap: 0; overflow: hidden; border: 1px solid #cad6dd; border-radius: 8px; background: #f7fafb; }
-.mdtodo-framebar { display: flex; min-width: 0; min-height: 34px; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid #d8e1e7; background: #f9fbfc; padding: 4px 10px; }
-.mdtodo-title-lockup { display: inline-flex; min-width: 0; align-items: baseline; gap: 8px; }
-.mdtodo-title-lockup span { color: #6b7a86; font-size: 10px; font-weight: 850; letter-spacing: 0; text-transform: uppercase; }
-.mdtodo-title-lockup strong { color: #111827; font-size: 16px; line-height: 1; }
-.mdtodo-route-chip { display: inline-flex; min-width: 0; align-items: center; justify-content: flex-end; gap: 8px; color: #52616b; font-size: 12px; font-weight: 750; }
-.mdtodo-route-chip span,
-.mdtodo-route-chip small { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-.mdtodo-route-chip small { max-width: min(46vw, 720px); color: #0f766e; font: inherit; }
+.mdtodo-page { display: grid; height: calc(100dvh - 68px); max-height: calc(100dvh - 68px); min-width: 0; min-height: 0; align-content: stretch; grid-template-rows: auto auto minmax(0, 1fr); gap: 0; overflow: hidden; border: 1px solid #cad6dd; border-radius: 8px; background: #f7fafb; }
 .mdtodo-route-loading,
-.mdtodo-error { grid-row: 2 / -1; min-width: 0; min-height: 0; height: 100%; align-self: stretch; }
-.mdtodo-notices { display: grid; grid-row: 3; min-width: 0; min-height: 0; gap: 0; }
+.mdtodo-error { grid-row: 1 / -1; min-width: 0; min-height: 0; height: 100%; align-self: stretch; }
+.mdtodo-notices { display: grid; grid-row: 2; min-width: 0; min-height: 0; gap: 0; }
 .source-message, .source-error { margin: 0; border-radius: 6px; padding: 6px 10px; font-size: 13px; }
 .source-message { border: 1px solid #bbf7d0; background: #f0fdf4; color: #166534; }
 .source-error { border: 1px solid #fecaca; background: #fef2f2; color: #991b1b; }
-.mdtodo-workspace { grid-row: 4; min-height: 0; height: 100%; max-height: none; align-self: stretch; }
+.mdtodo-workspace { grid-row: 3; min-height: 0; height: 100%; max-height: none; align-self: stretch; }
 .mdtodo-error { display: grid; align-content: start; gap: 12px; padding: 12px; overflow: auto; }
-@media (max-width: 720px) {
-  .mdtodo-framebar { align-items: start; flex-direction: column; gap: 2px; height: auto; padding: 6px 10px; }
-  .mdtodo-route-chip { width: 100%; justify-content: flex-start; }
-}
 </style>
diff --git a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
index 377d56ce..a1fb8f3f 100644
--- a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
+++ b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
@@ -2,11 +2,12 @@
 <!-- Responsibility: main workspace — task title, status, body (the primary content), inline edit, report links, Workbench launch. -->
 
 <script setup lang="ts">
+import { computed } from "vue";
 import type { MdtodoTaskDetailRecord, MdtodoTaskLinkRecord, MdtodoTaskRecord, ProjectNavigationResponse } from "@/api";
 import LoadingState from "@/components/common/LoadingState.vue";
 import EmptyState from "@/components/common/EmptyState.vue";
 
-defineProps<{
+const props = defineProps<{
   task: MdtodoTaskRecord | null;
   detail: MdtodoTaskDetailRecord | null;
   detailLoading: boolean;
@@ -44,6 +45,18 @@ const emit = defineEmits<{
   openReport: [link: MdtodoTaskLinkRecord];
   launchWorkbench: [];
 }>();
+
+const bodyDiffersFromTitle = computed(() => {
+  const body = normalizeTaskText(props.bodyText);
+  if (!body) return false;
+  const title = normalizeTaskText(props.task?.title);
+  const titleWithId = normalizeTaskText([props.task?.taskId, props.task?.title].filter(Boolean).join(" "));
+  return body !== title && body !== titleWithId;
+});
+
+function normalizeTaskText(value?: string | null): string {
+  return String(value ?? "").replace(/\s+/g, " ").trim();
+}
 </script>
 
 <template>
@@ -96,8 +109,8 @@ const emit = defineEmits<{
             </div>
           </div>
           <article v-else class="markdown-body task-body-rendered" data-testid="mdtodo-body-rendered" @dblclick="emit('beginBodyEdit')">
-            <div v-if="bodyHtml" v-html="bodyHtml" />
-            <p v-else class="empty-inline">暂无正文</p>
+            <div v-if="bodyHtml && bodyDiffersFromTitle" v-html="bodyHtml" />
+            <p v-else class="empty-inline">暂无补充正文</p>
           </article>
         </section>
       </section>
diff --git a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoToolbar.vue b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoToolbar.vue
index bb1d57b1..d99a20be 100644
--- a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoToolbar.vue
+++ b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoToolbar.vue
@@ -12,8 +12,6 @@ defineProps<{
   selectedFileRef: string | null;
   fileLoading: boolean;
   reindexLoading: boolean;
-  selectedFileName: string;
-  selectedTaskLabel: string;
 }>();
 
 const emit = defineEmits<{
@@ -47,10 +45,6 @@ function onFileSelect(event: Event): void {
         <option v-for="file in files" :key="file.fileRef" :value="file.fileRef">{{ fileDisplayName(file) }}</option>
       </select>
     </label>
-    <div class="toolbar-context" data-testid="mdtodo-toolbar-context">
-      <span class="toolbar-file-name" :title="selectedFileName">{{ selectedFileName }}</span>
-      <small v-if="selectedTaskLabel" class="toolbar-task-label">{{ selectedTaskLabel }}</small>
-    </div>
     <div class="toolbar-actions">
       <button class="btn btn-secondary toolbar-create" type="button" data-testid="mdtodo-new-task-open" @click="emit('openCreateTask')">+ 任务</button>
       <button class="icon-button" type="button" data-testid="mdtodo-source-config-open" aria-label="配置 Source" @click="emit('openSourceConfig')">⚙</button>
@@ -61,20 +55,16 @@ function onFileSelect(event: Event): void {
 </template>
 
 <style scoped>
-.mdtodo-toolbar { display: grid; grid-template-columns: minmax(160px, 240px) minmax(220px, 360px) minmax(0, 1fr) auto; gap: 8px; align-items: center; border-bottom: 1px solid #d8e1e7; background: #ffffff; padding: 7px 10px; }
+.mdtodo-toolbar { display: grid; grid-template-columns: minmax(160px, 240px) minmax(260px, 1fr) auto; gap: 8px; align-items: center; border-bottom: 1px solid #d8e1e7; background: #ffffff; padding: 7px 10px; }
 .toolbar-field { display: grid; min-width: 0; grid-template-columns: auto minmax(0, 1fr); gap: 7px; align-items: center; }
 .toolbar-field span { color: #5d6a73; font-size: 10px; font-weight: 850; letter-spacing: 0; text-transform: uppercase; }
 .toolbar-field select { width: 100%; min-width: 0; height: 32px; border: 1px solid #cbd6dd; border-radius: 6px; background: #fff; color: #111827; padding: 0 9px; font: inherit; font-size: 13px; }
-.toolbar-context { display: grid; min-width: 0; gap: 1px; align-content: center; border-left: 1px solid #e2e8ed; padding-left: 10px; }
-.toolbar-file-name { min-width: 0; overflow: hidden; color: #111827; font-size: 12px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
-.toolbar-task-label { color: #0f766e; font-size: 11px; font-weight: 750; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .toolbar-actions { display: flex; gap: 6px; justify-content: flex-end; align-items: center; }
 .toolbar-create { min-height: 32px; border-color: #a7c2c0; color: #0f4f4a; }
 .icon-button { display: inline-grid; width: 32px; height: 32px; place-items: center; border: 1px solid #cbd6dd; border-radius: 6px; background: #fff; color: #111827; font-weight: 850; }
 .icon-button:disabled { opacity: 0.5; }
 @media (max-width: 980px) {
   .mdtodo-toolbar { grid-template-columns: 1fr 1fr auto; }
-  .toolbar-context { display: none; }
 }
 @media (max-width: 640px) {
   .mdtodo-toolbar { grid-template-columns: 1fr; }
diff --git a/web/hwlab-cloud-web/src/utils/rum.ts b/web/hwlab-cloud-web/src/utils/rum.ts
index 8523e2ef..73d4973c 100644
--- a/web/hwlab-cloud-web/src/utils/rum.ts
+++ b/web/hwlab-cloud-web/src/utils/rum.ts
@@ -26,7 +26,7 @@ let installed = false;
 let flushTimer: number | null = null;
 
 export function installWebRum(): void {
-  if (installed || typeof window === "undefined") return;
+  if (installed || !hasBrowserRumRuntime() || typeof window.addEventListener !== "function") return;
   installed = true;
   window.addEventListener("load", () => window.setTimeout(recordNavigationTiming, 0), { once: true });
   window.addEventListener("visibilitychange", () => {
@@ -36,7 +36,7 @@ export function installWebRum(): void {
 }
 
 export function recordApiTiming(input: ApiTimingInput): void {
-  if (typeof window === "undefined") return;
+  if (!hasBrowserRumRuntime()) return;
   if (isWorkbenchPageRoute()) return;
   const valueMs = Math.max(0, Date.now() - input.startedAt);
   enqueue({
@@ -96,6 +96,7 @@ function enqueue(event: RumEvent): void {
 }
 
 function scheduleFlush(): void {
+  if (!hasBrowserRumRuntime()) return;
   if (flushTimer !== null) return;
   flushTimer = window.setTimeout(() => flushRum(false), FLUSH_INTERVAL_MS);
 }
@@ -116,10 +117,16 @@ function flushRum(useBeacon: boolean): void {
 }
 
 function pageRoute(): string {
+  if (typeof window === "undefined" || !window.location) return "/";
   return `${window.location.pathname}${window.location.hash || ""}` || "/";
 }
 
+function hasBrowserRumRuntime(): boolean {
+  return typeof window !== "undefined" && typeof window.setTimeout === "function" && typeof window.clearTimeout === "function";
+}
+
 function isWorkbenchPageRoute(): boolean {
+  if (typeof window === "undefined" || !window.location) return false;
   const pathname = window.location.pathname || "";
   return pathname.startsWith("/workbench") || pathname.startsWith("/workspace");
 }
diff --git a/web/hwlab-cloud-web/src/utils/workbench-performance.ts b/web/hwlab-cloud-web/src/utils/workbench-performance.ts
index 179273de..2e3ae1ff 100644
--- a/web/hwlab-cloud-web/src/utils/workbench-performance.ts
+++ b/web/hwlab-cloud-web/src/utils/workbench-performance.ts
@@ -506,7 +506,7 @@ export function resetWorkbenchPerformanceForTest(): void {
   openJourney = null;
   queue = [];
   uiTrace = null;
-  if (flushTimer !== null && typeof window !== "undefined") window.clearTimeout(flushTimer);
+  if (flushTimer !== null && hasBrowserTimerRuntime()) window.clearTimeout(flushTimer);
   flushTimer = null;
   installed = false;
 }
@@ -542,12 +542,12 @@ function enqueue(event: WorkbenchPerformanceEvent): void {
 }
 
 function scheduleFlush(): void {
-  if (typeof window === "undefined" || flushTimer !== null) return;
+  if (!hasBrowserTimerRuntime() || flushTimer !== null) return;
   flushTimer = window.setTimeout(() => flushWorkbenchPerformance(false), FLUSH_INTERVAL_MS);
 }
 
 function flushWorkbenchPerformance(useBeacon: boolean): void {
-  if (flushTimer !== null && typeof window !== "undefined") {
+  if (flushTimer !== null && hasBrowserTimerRuntime()) {
     window.clearTimeout(flushTimer);
     flushTimer = null;
   }
@@ -686,10 +686,14 @@ function timestampMs(value: unknown): number | null {
 }
 
 function pageRoute(): string {
-  if (typeof window === "undefined") return "/workbench";
+  if (typeof window === "undefined" || !window.location) return "/workbench";
   return routeTemplate(`${window.location.pathname}${window.location.hash || ""}` || "/workbench");
 }
 
+function hasBrowserTimerRuntime(): boolean {
+  return typeof window !== "undefined" && typeof window.setTimeout === "function" && typeof window.clearTimeout === "function";
+}
+
 function routeTemplate(input: string): string {
   const raw = safeText(input) || "/workbench";
   const pathOnly = raw.startsWith("#") ? raw.slice(1) || "/" : raw.split(/[?#]/u, 1)[0] || "/";