diff --git a/static/src/app/methods/ui/hostWorkspace.ts b/static/src/app/methods/ui/hostWorkspace.ts
index 01e1aeca..eef0c4ce 100644
--- a/static/src/app/methods/ui/hostWorkspace.ts
+++ b/static/src/app/methods/ui/hostWorkspace.ts
@@ -57,7 +57,11 @@ export const hostWorkspaceMethods = {
       this.runningWorkspaceTasks = [];
     }
   },
-  async handleHostWorkspaceSwitch(workspaceId) {
+  async handleHostWorkspaceSwitch(workspaceId, options = {}) {
+    // preserveConversationView：跨工作区点选具体对话时使用——保持当前对话视图冻结，
+    // 不做 /new 跳转与状态清空（否则空对话态会让居中输入栏「先往上再往下」），
+    // 目标对话由调用方随后立即加载
+    const preserveConversationView = Boolean(options && options.preserveConversationView);
     const targetId = String(workspaceId || '').trim();
     if (!targetId || this.hostWorkspaceSwitching) {
       return;
@@ -102,31 +106,39 @@ export const hostWorkspaceMethods = {
       if (data.default_workspace_id) {
         this.defaultHostWorkspaceId = String(data.default_workspace_id);
       }
-      this.messages = [];
-      this.currentConversationId = null;
-      this.resetTokenStatistics?.();
-      this.currentConversationTitle = '新对话';
-      this.titleReady = true;
-      this.suppressTitleTyping = false;
-      try {
-        const { useTaskStore } = await import('../../../stores/task');
-        const taskStore = useTaskStore();
-        taskStore.clearTask();
-      } catch (_) {}
-      this.clearLocalTaskUiState?.('switch-host-workspace');
+      if (!preserveConversationView) {
+        this.messages = [];
+        this.currentConversationId = null;
+        this.resetTokenStatistics?.();
+        this.currentConversationTitle = '新对话';
+        this.titleReady = true;
+        this.suppressTitleTyping = false;
+        try {
+          const { useTaskStore } = await import('../../../stores/task');
+          const taskStore = useTaskStore();
+          taskStore.clearTask();
+        } catch (_) {}
+        this.clearLocalTaskUiState?.('switch-host-workspace');
+      }
       await this.fetchHostWorkspaces();
-      const activeStatuses = new Set(['pending', 'running', 'cancel_requested']);
-      const activeTask = (Array.isArray(this.runningWorkspaceTasks) ? this.runningWorkspaceTasks : [])
-        .filter((task: any) => String(task?.workspace_id || '') === this.currentHostWorkspaceId)
-        .find((task: any) => activeStatuses.has(String(task?.status || '')) && task?.conversation_id);
-      if (activeTask?.conversation_id) {
-        await this.loadConversation(String(activeTask.conversation_id), { force: true });
+      if (preserveConversationView) {
+        // 不做视图跳转（/new 或自动进入运行中任务对话），仅刷新侧边栏列表
         this.conversationsOffset = 0;
         await this.loadConversationsList();
       } else {
-        this.startTitleTyping('新对话', { animate: false });
-        history.replaceState({}, '', '/new');
-        await this.loadConversationsList();
+        const activeStatuses = new Set(['pending', 'running', 'cancel_requested']);
+        const activeTask = (Array.isArray(this.runningWorkspaceTasks) ? this.runningWorkspaceTasks : [])
+          .filter((task: any) => String(task?.workspace_id || '') === this.currentHostWorkspaceId)
+          .find((task: any) => activeStatuses.has(String(task?.status || '')) && task?.conversation_id);
+        if (activeTask?.conversation_id) {
+          await this.loadConversation(String(activeTask.conversation_id), { force: true });
+          this.conversationsOffset = 0;
+          await this.loadConversationsList();
+        } else {
+          this.startTitleTyping('新对话', { animate: false });
+          history.replaceState({}, '', '/new');
+          await this.loadConversationsList();
+        }
       }
       const switchedWorkspace = (Array.isArray(this.hostWorkspaces) ? this.hostWorkspaces : [])
         .find((item: any) => String(item?.workspace_id || '') === this.currentHostWorkspaceId);
@@ -338,7 +350,7 @@ export const hostWorkspaceMethods = {
     const { conversationId, workspaceId } = payload || {};
     if (!conversationId || !workspaceId) return;
     if ((this.versioningHostMode || this.dockerProjectMode) && workspaceId !== this.currentHostWorkspaceId) {
-      await this.handleHostWorkspaceSwitch(workspaceId);
+      await this.handleHostWorkspaceSwitch(workspaceId, { preserveConversationView: true });
     }
     await this.loadConversation(conversationId, { force: true, workspaceId });
   },
diff --git a/static/src/components/chat/quickdock/QuickDock.vue b/static/src/components/chat/quickdock/QuickDock.vue
index e0ef2f4c..5296e171 100644
--- a/static/src/components/chat/quickdock/QuickDock.vue
+++ b/static/src/components/chat/quickdock/QuickDock.vue
@@ -1,7 +1,10 @@
 <template>
   <aside
     class="quick-dock"
-    :class="{ 'quick-dock--empty': !hasContent || userCollapsed }"
+    :class="{
+      'quick-dock--empty': !settingsReady || !hasContent || userCollapsed,
+      'quick-dock--no-anim': noAnim
+    }"
   >
     <div ref="scrollRef" class="quick-dock__scroll" @scroll.passive="handleStackScroll">
       <TodoWindow />
@@ -38,12 +41,17 @@
 <script setup lang="ts">
 import { computed, onBeforeUnmount, onMounted, ref, watch } from 'vue';
 import { storeToRefs } from 'pinia';
-import { useQuickDockStore } from '@/stores/quickDock';
+import {
+  useQuickDockStore,
+  persistQuickDockHadContent,
+  persistQuickDockConvContent
+} from '@/stores/quickDock';
 import { useSubAgentStore } from '@/stores/subAgent';
 import { useBackgroundCommandStore } from '@/stores/backgroundCommand';
 import { useConversationStore } from '@/stores/conversation';
 import { useUiStore } from '@/stores/ui';
-import { usePersonalizationStore } from '@/stores/personalization';
+import { usePersonalizationStore, hasCachedQuickDockAutoExpand } from '@/stores/personalization';
+import { useFileStore } from '@/stores/file';
 import TodoWindow from './TodoWindow.vue';
 import RunnerWindow from './RunnerWindow.vue';
 import RunnerDetailPanel from './RunnerDetailPanel.vue';
@@ -62,6 +70,7 @@ const subAgentStore = useSubAgentStore();
 const bgStore = useBackgroundCommandStore();
 const conversationStore = useConversationStore();
 const uiStore = useUiStore();
+const fileStore = useFileStore();
 const personalizationStore = usePersonalizationStore();
 
 // hasContent / userCollapsed 提升到 store：App.vue 的展开收起按钮共用同一判定
@@ -78,6 +87,119 @@ watch(userCollapsed, (collapsed) => {
 /** 快捷窗口自动展开设置（个人空间·外观与显示，默认是；为否则只能手动点击按钮展开） */
 const autoExpand = computed(() => personalizationStore.form.quick_dock_auto_expand !== false);
 
+/**
+ * 个性化设置是否就绪。有本地缓存时首帧即就绪（表单已从缓存同步初始化，
+ * 与主题缓存同理）；无缓存（首次使用）或接口失败时退化为等待接口/按默认值呈现。
+ * 就绪前强制空态（宽 0 不可见）：否则手动模式会先渲染展开态再纠正。
+ */
+const settingsReady = computed(
+  () =>
+    hasCachedQuickDockAutoExpand() || personalizationStore.loaded || !!personalizationStore.error
+);
+
+/**
+ * 无过渡窗口（quick-dock--no-anim）：禁用容器展开/收起过渡，窗口内状态校正瞬间完成。
+ * 两个开启时机：
+ * 1. 初始加载：设置与首批内容（子智能体/后台指令/bootstrap 回填/待办）异步到达，
+ *    若不禁用会播「先空再展开」/「先展开再收起」动画；
+ * 2. 切换对话：旧内容刻意保留至新对话 bootstrap 回填（防「先收再放」），回填后
+ *    内容有无翻转同样不能播动画，需瞬间切换成新对话的收起/展开状态。
+ * 窗口关闭条件：新一轮回填到齐（同步序号推进）+ 短宽限；超时强制关闭防挂起。
+ */
+const noAnim = ref(true);
+/** 回填到齐后的短宽限：合并同批次略晚到达的其余数据（如子智能体刷新） */
+const SYNC_SETTLE_GRACE_MS = 300;
+/** 兜底上限：回填异常慢/失败时也不能永久禁用过渡（到点强制关闭窗口） */
+const NO_ANIM_CAP_MS = 3000;
+
+/** 窗口代数：重开窗口会使上一代未完成的 rAF 回调失效 */
+let windowGeneration = 0;
+/** 开窗时捕获的同步进度：序号超过它才算「新一轮回填已到齐」 */
+let gateTarget: { filesSeq: number; todoSeq: number } | null = null;
+let gateWatchStop: (() => void) | null = null;
+let releaseTimer: ReturnType<typeof setTimeout> | null = null;
+let forceTimer: ReturnType<typeof setTimeout> | null = null;
+/** 首批子智能体/后台指令拉取未完成前不关闭初始窗口（它们也参与 hasContent） */
+let initialRefreshPending = true;
+
+function gatesPassed(): boolean {
+  if (initialRefreshPending) {
+    return false;
+  }
+  if (!gateTarget) {
+    return true;
+  }
+  return quickDock.filesSyncSeq > gateTarget.filesSeq && fileStore.todoSyncSeq > gateTarget.todoSeq;
+}
+
+function clearWindowTimers() {
+  if (releaseTimer !== null) {
+    clearTimeout(releaseTimer);
+    releaseTimer = null;
+  }
+  if (forceTimer !== null) {
+    clearTimeout(forceTimer);
+    forceTimer = null;
+  }
+}
+
+/** 开启/重开无过渡窗口：捕获当前同步进度，等新一轮回填到齐后关闭 */
+function openNoAnimWindow() {
+  windowGeneration += 1;
+  noAnim.value = true;
+  gateTarget = { filesSeq: quickDock.filesSyncSeq, todoSeq: fileStore.todoSyncSeq };
+  clearWindowTimers();
+  if (!gateWatchStop) {
+    gateWatchStop = watch(
+      () => [quickDock.filesSyncSeq, fileStore.todoSyncSeq],
+      () => {
+        scheduleReleaseIfSynced();
+      }
+    );
+  }
+  scheduleReleaseIfSynced();
+  forceTimer = setTimeout(() => {
+    releaseNoAnim(true);
+  }, NO_ANIM_CAP_MS);
+}
+
+function scheduleReleaseIfSynced() {
+  if (!noAnim.value || !gatesPassed()) {
+    return;
+  }
+  if (releaseTimer !== null) {
+    clearTimeout(releaseTimer);
+  }
+  releaseTimer = setTimeout(() => {
+    releaseTimer = null;
+    releaseNoAnim();
+  }, SYNC_SETTLE_GRACE_MS);
+}
+
+function releaseNoAnim(force = false) {
+  if (!noAnim.value || (!force && !gatesPassed())) {
+    return;
+  }
+  clearWindowTimers();
+  if (gateWatchStop) {
+    gateWatchStop();
+    gateWatchStop = null;
+  }
+  gateTarget = null;
+  // 顺带结束首帧乐观内容标记（幂等）：此后 hasContent 只看真实状态
+  quickDock.settleInitialContent();
+  // 双 rAF：先把最终状态无过渡绘制一帧，再恢复过渡，避免恢复瞬间补播动画；
+  // 期间若重开了窗口（代数变化），本次恢复作废
+  const generation = windowGeneration;
+  requestAnimationFrame(() => {
+    requestAnimationFrame(() => {
+      if (generation === windowGeneration) {
+        noAnim.value = false;
+      }
+    });
+  });
+}
+
 // 内容集合变化（出现/清空）时按模式校正展开状态：
 // - 自动展开（默认）：重置手动标记，新内容到达自动展开
 //   （按钮常显后，无内容时也可能被点击置为收起；不重置会导致新内容到达不展开）
@@ -97,6 +219,20 @@ watch(autoExpand, (enabled) => {
   quickDock.userCollapsed = !enabled;
 });
 
+// 持续维护「dock 是否有内容」缓存（全局 + 按对话两条）：
+// 下次进入页面/切换对话时即可按最终状态静态渲染。
+// 乐观掩码生效期间不写，避免把猜测值当真；掩码关闭时若状态翻转
+// 本 watch 会触发并写入真实值，缓存自我修正。
+watch(hasContent, (content) => {
+  if (!quickDock.assumedActive) {
+    persistQuickDockHadContent(content);
+    const convId = conversationStore.currentConversationId;
+    if (convId) {
+      persistQuickDockConvContent(convId, content);
+    }
+  }
+});
+
 const AGENT_TERMINAL = new Set(['completed', 'failed', 'timeout', 'terminated']);
 const CMD_TERMINAL = new Set(['completed', 'failed', 'timeout', 'cancelled']);
 
@@ -281,10 +417,20 @@ function refreshAll() {
 }
 
 onMounted(() => {
-  refreshAll();
+  // 首批内容拉取（同时作为初始无过渡窗口的关闭条件之一）
+  const initialRefresh = Promise.allSettled([
+    subAgentStore.fetchSubAgents(),
+    bgStore.fetchCommands()
+  ]);
   pollTimer = setInterval(refreshAll, 5000);
   document.addEventListener('keydown', onKeydown);
   document.addEventListener('click', onDocumentClick);
+  // 开启初始无过渡窗口：新一轮回填到齐 + 首批拉取完成后关闭；兜底定时器到点强制关闭
+  openNoAnimWindow();
+  void initialRefresh.then(() => {
+    initialRefreshPending = false;
+    scheduleReleaseIfSynced();
+  });
 });
 
 onBeforeUnmount(() => {
@@ -292,6 +438,7 @@ onBeforeUnmount(() => {
     clearInterval(pollTimer);
     pollTimer = null;
   }
+  clearWindowTimers();
   document.removeEventListener('keydown', onKeydown);
   document.removeEventListener('click', onDocumentClick);
   quickDock.resetTransient();
@@ -304,7 +451,15 @@ watch(
     // 避免切换对话时列「先收起再展开」闪烁（/new 场景由 app watcher 负责清空）。
     quickDock.resetTransient();
     refreshAll();
-  }
+    // 切换期间重开无过渡窗口：新对话回填后的收起/展开状态瞬间切换，不播容器动画。
+    // flush:'sync' 保证在 app watcher 清空回填（/new 场景）之前捕获同步序号，
+    // 否则序号先推进、门控永远等不到而挂到超时
+    openNoAnimWindow();
+    // 按缓存乐观假定目标对话的 dock 状态：有内容则切过去即是展开（无动画、无延迟），
+    // 无内容则旧内容保留至回填后瞬间收起；缓存在窗口关闭时自我纠正
+    quickDock.assumeContentForConversation(conversationStore.currentConversationId);
+  },
+  { flush: 'sync' }
 );
 </script>
 
diff --git a/static/src/components/chat/quickdock/quickdock.css b/static/src/components/chat/quickdock/quickdock.css
index 658b83d5..22457c17 100644
--- a/static/src/components/chat/quickdock/quickdock.css
+++ b/static/src/components/chat/quickdock/quickdock.css
@@ -43,6 +43,13 @@
   transform: translateX(24px);
 }
 
+/* 初始加载窗口内禁用容器过渡：进入页面时设置与首批内容异步到达，
+   首次状态校正必须瞬间完成，否则会看到「先空再展开」/「先展开再收起」的闪烁；
+   窗口关闭（类移除）后恢复正常交互动画。规则位于 .quick-dock 之后，同优先级覆盖 */
+.quick-dock--no-anim {
+  transition: none;
+}
+
 .quick-dock__scroll {
   flex: 1;
   min-height: 0;
diff --git a/static/src/stores/file.ts b/static/src/stores/file.ts
index d2b7da5f..67ff248b 100644
--- a/static/src/stores/file.ts
+++ b/static/src/stores/file.ts
@@ -41,6 +41,9 @@ interface FileState {
   todoList: TodoList | null;
   /** true = 来自任务期实时事件（播动画）；false = 来自加载/fetch（静态呈现） */
   todoListLive: boolean;
+  /** 待办同步序号：fetchTodoList 成功 / setTodoList 调用时 +1。
+   *  快捷窗口无过渡窗口通过比较序号识别「新一轮待办已回填」 */
+  todoSyncSeq: number;
   fileTreeUnavailable: boolean;
   fileTreeMessage: string;
   contextMenu: ContextMenuState;
@@ -82,6 +85,7 @@ export const useFileStore = defineStore('file', {
     expandedFolders: {},
     todoList: null,
     todoListLive: false,
+    todoSyncSeq: 0,
     fileTreeUnavailable: false,
     fileTreeMessage: '',
     contextMenu: {
@@ -182,6 +186,7 @@ export const useFileStore = defineStore('file', {
           // 顺序同 setTodoList：先写 live 标记（REST 拉取一律静态），再写数据
           this.todoListLive = false;
           this.todoList = data.data || null;
+          this.todoSyncSeq += 1;
         }
       } catch (error) {
         console.error('获取待办列表失败:', error);
@@ -193,6 +198,7 @@ export const useFileStore = defineStore('file', {
       // 读到上一次调用残留的旧值，动画路径（划线/圆点弹跳）永远走不到。
       this.todoListLive = live;
       this.todoList = payload;
+      this.todoSyncSeq += 1;
     },
     showContextMenu(payload: { node: FileNode; event: MouseEvent }) {
       if (!payload || !payload.node) {
diff --git a/static/src/stores/personalization.ts b/static/src/stores/personalization.ts
index 5366c0e1..6cd69719 100644
--- a/static/src/stores/personalization.ts
+++ b/static/src/stores/personalization.ts
@@ -104,6 +104,7 @@ const EXPERIMENT_STORAGE_KEY = 'agents_personalization_experiments';
 const THEME_STORAGE_KEY = 'agents_ui_theme';
 const STACKED_HIDE_BORDERS_STORAGE_KEY = 'agents_stacked_hide_borders';
 const MINIMAL_EXPAND_HEIGHT_LIMITED_STORAGE_KEY = 'agents_minimal_expand_height_limited';
+const QUICK_DOCK_AUTO_EXPAND_STORAGE_KEY = 'agents_quick_dock_auto_expand';
 
 const loadCachedTheme = (): PersonalForm['theme'] => {
   if (typeof window === 'undefined' || !window.localStorage) {
@@ -153,6 +154,38 @@ const persistStackedHideBorders = (value: boolean) => {
   }
 };
 
+/**
+ * 快捷窗口自动展开设置的本地缓存（与主题缓存同理）：
+ * 进入页面时个性化接口是异步的，首帧渲染必须同步拿到该设置，
+ * 否则 QuickDock 只能先按默认值渲染再等接口纠偏，产生「先展开再收起」/「先空再展开」闪烁。
+ */
+export const loadCachedQuickDockAutoExpand = (): boolean => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return true;
+  }
+  const saved = window.localStorage.getItem(QUICK_DOCK_AUTO_EXPAND_STORAGE_KEY);
+  return saved === null ? true : saved === 'true';
+};
+
+/** 是否已有自动展开设置的本地缓存（无缓存的首次访问仍需等接口就绪） */
+export const hasCachedQuickDockAutoExpand = (): boolean => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return false;
+  }
+  return window.localStorage.getItem(QUICK_DOCK_AUTO_EXPAND_STORAGE_KEY) !== null;
+};
+
+const persistQuickDockAutoExpand = (value: boolean) => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return;
+  }
+  try {
+    window.localStorage.setItem(QUICK_DOCK_AUTO_EXPAND_STORAGE_KEY, value ? 'true' : 'false');
+  } catch (error) {
+    console.warn('写入快捷窗口自动展开设置缓存失败：', error);
+  }
+};
+
 const loadCachedMinimalExpandHeightLimited = (): boolean => {
   if (typeof window === 'undefined' || !window.localStorage) {
     return true;
@@ -193,7 +226,7 @@ const defaultForm = (): PersonalForm => ({
   show_status_avatar: true,
   show_git_status_bar: true,
   auto_open_terminal_panel: true,
-  quick_dock_auto_expand: true,
+  quick_dock_auto_expand: loadCachedQuickDockAutoExpand(),
   stacked_hide_borders: loadCachedStackedHideBorders(),
   minimal_expand_height_limited: loadCachedMinimalExpandHeightLimited(),
   enhanced_tool_display_categories: [],
@@ -495,6 +528,7 @@ export const usePersonalizationStore = defineStore('personalization', {
       }
       persistStackedHideBorders(this.form.stacked_hide_borders);
       persistMinimalExpandHeightLimited(this.form.minimal_expand_height_limited);
+      persistQuickDockAutoExpand(this.form.quick_dock_auto_expand);
       // 简略消息显示：以配置文件为准，同步到旧版 localStorage 镜像供 ChatArea 读取。
       // 一次性迁移：后端仍为默认 full，但本地缓存遗留 brief（旧版纯前端记录）时，回写到配置文件。
       const cachedCompact = this.experiments.compactMessageDisplay;
diff --git a/static/src/stores/quickDock.ts b/static/src/stores/quickDock.ts
index 805ab562..0a86eb8c 100644
--- a/static/src/stores/quickDock.ts
+++ b/static/src/stores/quickDock.ts
@@ -15,6 +15,83 @@ export interface EditedFileEntry {
   ts?: string;
 }
 
+/**
+ * 「上次页面离开时 dock 是否有内容」的本地缓存（与主题缓存同理）。
+ * 进入页面时真实内容（文件记录/待办/子智能体/后台指令）全部异步到达，
+ * 首帧只能按 hasContent=false 渲染 0 宽，数据到达后整列插入导致布局跳变。
+ * 用缓存做首帧乐观展开，等首批数据到齐（settleInitialContent）后切回真实状态；
+ * 缓存与真实不符时在初始无过渡窗口内瞬间纠正，用户无感知。
+ */
+const QUICK_DOCK_HAD_CONTENT_STORAGE_KEY = 'agents_quick_dock_had_content';
+
+const loadCachedHadContent = (): boolean => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return false;
+  }
+  try {
+    return window.localStorage.getItem(QUICK_DOCK_HAD_CONTENT_STORAGE_KEY) === '1';
+  } catch {
+    return false;
+  }
+};
+
+export const persistQuickDockHadContent = (hadContent: boolean) => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return;
+  }
+  try {
+    window.localStorage.setItem(QUICK_DOCK_HAD_CONTENT_STORAGE_KEY, hadContent ? '1' : '0');
+  } catch (error) {
+    console.warn('写入快捷窗口内容状态缓存失败：', error);
+  }
+};
+
+/**
+ * 「每个对话各自」的 dock 内容状态缓存（LRU，上限 50 条）。
+ * 切换对话时目标对话的回填是异步的，用该缓存同步假定目标对话的 dock 状态：
+ * 有内容则切过去即展开（无动画），回填到齐后切回真实状态，不符时瞬间纠正。
+ */
+const QUICK_DOCK_CONV_CONTENT_STORAGE_KEY = 'agents_quick_dock_conv_content';
+const CONV_CONTENT_CACHE_LIMIT = 50;
+
+const loadConvContentMap = (): Record<string, boolean> => {
+  if (typeof window === 'undefined' || !window.localStorage) {
+    return {};
+  }
+  try {
+    const raw = window.localStorage.getItem(QUICK_DOCK_CONV_CONTENT_STORAGE_KEY);
+    const parsed = raw ? JSON.parse(raw) : {};
+    return parsed && typeof parsed === 'object' ? (parsed as Record<string, boolean>) : {};
+  } catch {
+    return {};
+  }
+};
+
+export const loadQuickDockConvContent = (conversationId: string): boolean => {
+  return loadConvContentMap()[conversationId] === true;
+};
+
+export const persistQuickDockConvContent = (conversationId: string, hadContent: boolean) => {
+  if (typeof window === 'undefined' || !window.localStorage || !conversationId) {
+    return;
+  }
+  try {
+    const map = loadConvContentMap();
+    // 删除重插：刷新插入序，让 Object.keys 顺序近似 LRU
+    delete map[conversationId];
+    map[conversationId] = hadContent;
+    const keys = Object.keys(map);
+    if (keys.length > CONV_CONTENT_CACHE_LIMIT) {
+      for (const staleKey of keys.slice(0, keys.length - CONV_CONTENT_CACHE_LIMIT)) {
+        delete map[staleKey];
+      }
+    }
+    window.localStorage.setItem(QUICK_DOCK_CONV_CONTENT_STORAGE_KEY, JSON.stringify(map));
+  } catch (error) {
+    console.warn('写入快捷窗口对话内容缓存失败：', error);
+  }
+};
+
 export interface QuickDockDetailTarget {
   kind: 'agent' | 'cmd';
   id: string;
@@ -43,6 +120,17 @@ interface QuickDockState {
   menu: QuickDockMenuState | null;
   /** 用户通过顶部悬浮按钮手动收起（与「无内容自动收起」相互独立） */
   userCollapsed: boolean;
+  /** 乐观假定的内容状态（来源：上次离开的全局缓存 / 目标对话的按对话缓存） */
+  assumedContent: boolean;
+  /** 乐观掩码是否生效（三态）：生效时 hasContent 完全由 assumedContent 决定——
+   *  包括「假定无内容」：切到缓存为空的对话时立即掩盖旧对话被刻意保留的真实内容，
+   *  使 dock 与对话区在同一时刻切换（否则只能等 bootstrap 末尾回填才折叠，慢一拍）。
+   *  真实数据到齐（settleInitialContent）后关闭，回退为纯真实状态 */
+  assumedActive: boolean;
+  /** 文件记录回填同步序号：每次 setEditedFiles +1（bootstrap 必经，空数组也调；
+   *  /new 场景 app watcher 也会清空调用）。初始加载/切换对话的无过渡窗口
+   *  通过比较序号识别「新一轮内容已回填」 */
+  filesSyncSeq: number;
 }
 
 export const useQuickDockStore = defineStore('quickDock', {
@@ -52,7 +140,10 @@ export const useQuickDockStore = defineStore('quickDock', {
     detail: null,
     previewPath: null,
     menu: null,
-    userCollapsed: false
+    userCollapsed: false,
+    assumedContent: loadCachedHadContent(),
+    assumedActive: loadCachedHadContent(),
+    filesSyncSeq: 0
   }),
   getters: {
     /** 四个窗口（待办/子智能体/后台指令/文件记录）任一有内容 */
@@ -61,12 +152,14 @@ export const useQuickDockStore = defineStore('quickDock', {
       const subAgentStore = useSubAgentStore();
       const bgStore = useBackgroundCommandStore();
       const todoCount = fileStore.todoList?.tasks?.length || 0;
-      return (
+      const real =
         todoCount > 0 ||
         subAgentStore.subAgents.length > 0 ||
         bgStore.commands.length > 0 ||
-        state.editedFiles.length > 0
-      );
+        state.editedFiles.length > 0;
+      // 乐观掩码生效期间（初始加载/切换对话的内容未到齐窗口）以假定状态为准；
+      // 掩码关闭后纯真实状态
+      return state.assumedActive ? state.assumedContent : real;
     },
     /** 实际处于展开态：有内容且未被用户手动收起 */
     expanded(state): boolean {
@@ -75,6 +168,7 @@ export const useQuickDockStore = defineStore('quickDock', {
   },
   actions: {
     setEditedFiles(list: EditedFileEntry[] | null | undefined, live = false) {
+      this.filesSyncSeq += 1;
       this.editedFilesLive = live;
       if (!Array.isArray(list)) {
         this.editedFiles = [];
@@ -142,6 +236,17 @@ export const useQuickDockStore = defineStore('quickDock', {
       this.detail = null;
       this.previewPath = null;
       this.menu = null;
+    },
+    /** 真实内容数据到齐（无过渡窗口关闭时调用，幂等）：关闭乐观掩码，此后 hasContent 只看真实状态 */
+    settleInitialContent() {
+      this.assumedActive = false;
+      this.assumedContent = false;
+    },
+    /** 切换对话时按缓存乐观假定目标对话的 dock 内容状态（无缓存/无 id → 假定无内容）
+     *  并开启掩码：与对话区同刻切换 dock 的收起/展开，不等待异步回填 */
+    assumeContentForConversation(conversationId: string | null) {
+      this.assumedContent = conversationId ? loadQuickDockConvContent(conversationId) : false;
+      this.assumedActive = true;
     }
   }
 });