diff --git a/static/src/app/bootstrap.ts b/static/src/app/bootstrap.ts
index e2e1520e..eef78d62 100644
--- a/static/src/app/bootstrap.ts
+++ b/static/src/app/bootstrap.ts
@@ -1475,8 +1475,11 @@ function dispatchShowFileDownload(path: string) {
     })
     .catch((err) => {
       console.warn('[show_file] 下载失败:', err);
-      // 兜底：直接跳转
-      window.open(url, '_blank');
+      // 失败不再兜底跳转（window.open 会把后端 JSON 错误整页展示），改为错误弹窗提示
+      useUiStore().pushToast({
+        message: err?.message || t('common.downloadFailed'),
+        type: 'error'
+      });
     });
 }
 
diff --git a/static/src/components/chat/quickdock/FileWindow.vue b/static/src/components/chat/quickdock/FileWindow.vue
index efb5ff83..b7ad2875 100644
--- a/static/src/components/chat/quickdock/FileWindow.vue
+++ b/static/src/components/chat/quickdock/FileWindow.vue
@@ -78,6 +78,7 @@ function openMenu(e: MouseEvent, row: Row) {
     key: row.path,
     left: rect.left, // 与按钮左对齐、向下展开
     top: rect.bottom + 6,
+    btnTop: rect.top,
     alignRight: false
   });
 }
diff --git a/static/src/components/chat/quickdock/QuickDock.vue b/static/src/components/chat/quickdock/QuickDock.vue
index 8778dcdc..07f23e5f 100644
--- a/static/src/components/chat/quickdock/QuickDock.vue
+++ b/static/src/components/chat/quickdock/QuickDock.vue
@@ -17,25 +17,34 @@
     <!-- 详情面板（fixed 浮在列左侧） -->
     <RunnerDetailPanel />
 
-    <!-- 全局 ⋯ 菜单（fixed 单例） -->
-    <div v-if="menu" class="qd-menu menu-enter" :style="menuStyle" @click.stop>
-      <template v-if="menu.type === 'runner'">
-        <button
-          class="qd-menu__item qd-menu__item--danger"
-          :disabled="!menuTargetRunning"
-          @click="killRunner"
-        >
-          {{ $t('quickdock.menuForceStop') }}
-        </button>
-      </template>
-      <template v-else>
-        <button class="qd-menu__item" @click="downloadFile">{{ $t('common.download') }}</button>
-        <button v-if="hostMode" class="qd-menu__item" @click="revealInManager">
-          {{ $t('quickdock.menuRevealInManager') }}
-        </button>
-        <button class="qd-menu__item" @click="copyPath">{{ $t('quickdock.menuCopyPath') }}</button>
-      </template>
-    </div>
+    <!-- 全局 ⋯ 菜单（fixed 单例）；Transition 提供进入/离开动画，
+         离开期间用 effectiveMenu 快照保持内容与定位不变 -->
+    <Transition name="qd-menu">
+      <div
+        v-if="menu"
+        class="qd-menu"
+        :class="{ 'qd-menu--above': menuFlipped }"
+        :style="menuStyle"
+        @click.stop
+      >
+        <template v-if="effectiveMenu?.type === 'runner'">
+          <button
+            class="qd-menu__item qd-menu__item--danger"
+            :disabled="!menuTargetRunning"
+            @click="killRunner"
+          >
+            {{ $t('quickdock.menuForceStop') }}
+          </button>
+        </template>
+        <template v-else>
+          <button class="qd-menu__item" @click="downloadFile">{{ $t('common.download') }}</button>
+          <button v-if="hostMode" class="qd-menu__item" @click="revealInManager">
+            {{ $t('quickdock.menuRevealInManager') }}
+          </button>
+          <button class="qd-menu__item" @click="copyPath">{{ $t('quickdock.menuCopyPath') }}</button>
+        </template>
+      </div>
+    </Transition>
   </aside>
 </template>
 
@@ -46,7 +55,8 @@ import { t } from '@/locales';
 import {
   useQuickDockStore,
   persistQuickDockHadContent,
-  persistQuickDockConvContent
+  persistQuickDockConvContent,
+  type QuickDockMenuState
 } from '@/stores/quickDock';
 import { useSubAgentStore } from '@/stores/subAgent';
 import { useBackgroundCommandStore } from '@/stores/backgroundCommand';
@@ -67,7 +77,7 @@ import FileWindow from './FileWindow.vue';
  * 同时负责：全局 ⋯ 菜单、Esc 分层关闭、列表轮询、对话切换重置。
  */
 
-defineProps<{ hostMode: boolean }>();
+const props = defineProps<{ hostMode: boolean }>();
 
 const quickDock = useQuickDockStore();
 const subAgentStore = useSubAgentStore();
@@ -243,14 +253,57 @@ const CMD_TERMINAL = new Set(['completed', 'failed', 'timeout', 'cancelled']);
 
 /* ---------------- 菜单定位与目标状态 ---------------- */
 
-const MENU_ESTIMATED_HEIGHT = 128;
+const MENU_ITEM_HEIGHT = 30;
+const MENU_CHROME = 10; // 上下 padding 4×2 + border 1×2
+const MENU_GAP = 6;
+const VIEWPORT_MARGIN = 8;
+
+/** 离开动画期间沿用的最后一份菜单快照（menu 关闭即 null，直接读会让位置/内容在动画中跳变） */
+const lastMenu = ref<QuickDockMenuState | null>(null);
+watch(
+  menu,
+  (val) => {
+    if (val) {
+      lastMenu.value = val;
+    }
+  },
+  { immediate: true }
+);
+const effectiveMenu = computed(() => menu.value || lastMenu.value);
+
+/** 菜单高度估算：行高固定 30px，按类型精确到项数，翻转时才能贴住按钮 */
+const menuEstimatedHeight = computed(() => {
+  const m = effectiveMenu.value;
+  if (!m) {
+    return 0;
+  }
+  if (m.type === 'runner') {
+    return MENU_ITEM_HEIGHT + MENU_CHROME;
+  }
+  return (props.hostMode ? 3 : 2) * MENU_ITEM_HEIGHT + MENU_CHROME;
+});
+
+/** 菜单是否翻转到按钮上方展开（下方放不下且上方更宽裕）；
+ *  驱动定位与动画方向（qd-menu--above：从下到上淡入） */
+const menuFlipped = computed(() => {
+  const m = effectiveMenu.value;
+  if (!m) {
+    return false;
+  }
+  const spaceBelow = window.innerHeight - VIEWPORT_MARGIN - m.top;
+  const spaceAbove = m.btnTop - MENU_GAP - VIEWPORT_MARGIN;
+  return spaceBelow < menuEstimatedHeight.value && spaceAbove > spaceBelow;
+});
 
 const menuStyle = computed(() => {
-  const m = menu.value;
+  const m = effectiveMenu.value;
   if (!m) {
     return {};
   }
-  const top = Math.min(m.top, window.innerHeight - MENU_ESTIMATED_HEIGHT - 8);
+  const estHeight = menuEstimatedHeight.value;
+  const top = menuFlipped.value
+    ? Math.max(VIEWPORT_MARGIN, m.btnTop - MENU_GAP - estHeight)
+    : Math.min(m.top, window.innerHeight - estHeight - VIEWPORT_MARGIN);
   if (m.alignRight) {
     return { right: `${window.innerWidth - m.left}px`, top: `${top}px` };
   }
diff --git a/static/src/components/chat/quickdock/RunnerDetailPanel.vue b/static/src/components/chat/quickdock/RunnerDetailPanel.vue
index 2b1c6ae9..4c10aac1 100644
--- a/static/src/components/chat/quickdock/RunnerDetailPanel.vue
+++ b/static/src/components/chat/quickdock/RunnerDetailPanel.vue
@@ -1,8 +1,10 @@
 <template>
   <section
     v-if="renderVisible"
+    ref="rootRef"
     class="qd-detail"
     :class="{ 'panel-enter': entering, 'panel-leave': leaving }"
+    :style="{ right: `${panelRight}px` }"
   >
     <header class="qd-detail__header">
       <span class="qd-detail__dot" :class="`is-${stateClass}`"></span>
@@ -65,12 +67,13 @@
 </template>
 
 <script setup lang="ts">
-import { computed, nextTick, ref, watch } from 'vue';
+import { computed, nextTick, onBeforeUnmount, ref, watch } from 'vue';
 import { storeToRefs } from 'pinia';
 import { t, currentLocale } from '@/locales';
 import { useQuickDockStore } from '@/stores/quickDock';
 import { useSubAgentStore } from '@/stores/subAgent';
 import { useBackgroundCommandStore } from '@/stores/backgroundCommand';
+import CloseButton from '@/components/common/CloseButton.vue';
 
 /**
  * 详情面板（fixed 浮在快捷窗口列左侧）
@@ -139,6 +142,35 @@ const entering = ref(false);
 const leaving = ref(false);
 const bodyFading = ref(false);
 const bodyRef = ref<HTMLElement | null>(null);
+const rootRef = ref<HTMLElement | null>(null);
+
+/* ---------------- 面板水平定位：跟随快捷栏实际位置 ----------------
+   CSS 里的 right 兜底值假设快捷栏贴视口最右缘；右侧再开预览/终端面板时
+   快捷栏左移，写死的 right 会让面板盖住快捷栏。显示期间逐帧测量
+   快捷栏左缘（顺带跟随面板开合过渡与拖拽调宽），保持 12px 间距。 */
+const panelRight = ref(294 + 12);
+let positionRafId = 0;
+
+function trackDockPosition() {
+  const aside = rootRef.value?.parentElement;
+  if (aside) {
+    const next = Math.round(window.innerWidth - aside.getBoundingClientRect().left + 12);
+    if (next !== panelRight.value) {
+      panelRight.value = next;
+    }
+  }
+  positionRafId = requestAnimationFrame(trackDockPosition);
+}
+
+watch(renderVisible, (visible) => {
+  if (visible) {
+    trackDockPosition();
+  } else {
+    cancelAnimationFrame(positionRafId);
+  }
+});
+
+onBeforeUnmount(() => cancelAnimationFrame(positionRafId));
 
 /** 当前条目状态与标题（关闭离开动画期间沿用最后快照） */
 const currentStatus = computed(() => {
diff --git a/static/src/components/chat/quickdock/RunnerWindow.vue b/static/src/components/chat/quickdock/RunnerWindow.vue
index 0f183a3a..08e1c135 100644
--- a/static/src/components/chat/quickdock/RunnerWindow.vue
+++ b/static/src/components/chat/quickdock/RunnerWindow.vue
@@ -169,6 +169,7 @@ function openMenu(e: MouseEvent, row: Row) {
     key: row.id,
     left: rect.right, // alignRight：菜单右缘对齐按钮右缘
     top: rect.bottom + 6,
+    btnTop: rect.top,
     alignRight: true
   });
 }
diff --git a/static/src/components/chat/quickdock/quickdock.css b/static/src/components/chat/quickdock/quickdock.css
index 8aefb947..32a6e28e 100644
--- a/static/src/components/chat/quickdock/quickdock.css
+++ b/static/src/components/chat/quickdock/quickdock.css
@@ -453,7 +453,9 @@
 .qd-detail {
   position: fixed;
   top: 20px;
-  right: calc(294px + 12px); /* 快捷窗口列宽 + gap */
+  /* right 由组件内联样式动态计算：跟随快捷栏实际位置（右侧可能还有预览/终端面板），
+     兜底值与旧写法一致（快捷窗口列宽 294 + gap 12） */
+  right: calc(294px + 12px);
   width: 480px;
   max-width: calc(100vw - 360px);
   height: 460px;
@@ -988,19 +990,43 @@
   box-shadow: var(--shadow-card);
 }
 
-.qd-menu.menu-enter {
-  animation: qd-menu-in 0.16s ease-out;
+/* 进入/离开：淡入淡出 + 从按钮一侧滑入——菜单在按钮下方展开时从上到下（默认），
+   翻转到按钮上方时从下到上（--above），动画始终以按钮为起点 */
+.qd-menu-enter-active,
+.qd-menu-leave-active {
+  transition:
+    opacity 0.16s ease-out,
+    transform 0.16s ease-out;
+  transform-origin: top center;
 }
 
-@keyframes qd-menu-in {
-  from {
-    opacity: 0;
-    transform: translateY(-3px) scale(0.97);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0) scale(1);
-  }
+.qd-menu--above.qd-menu-enter-active,
+.qd-menu--above.qd-menu-leave-active {
+  transform-origin: bottom center;
+}
+
+.qd-menu-leave-active {
+  transition-duration: 0.13s;
+  transition-timing-function: ease-in;
+  pointer-events: none;
+}
+
+.qd-menu-enter-from {
+  opacity: 0;
+  transform: translateY(-4px) scale(0.98);
+}
+
+.qd-menu--above.qd-menu-enter-from {
+  transform: translateY(4px) scale(0.98);
+}
+
+.qd-menu-leave-to {
+  opacity: 0;
+  transform: translateY(-3px) scale(0.98);
+}
+
+.qd-menu--above.qd-menu-leave-to {
+  transform: translateY(3px) scale(0.98);
 }
 
 .qd-menu__item {
diff --git a/static/src/composables/useMarkdownRenderer.ts b/static/src/composables/useMarkdownRenderer.ts
index a6e9bbbd..c75e43bf 100644
--- a/static/src/composables/useMarkdownRenderer.ts
+++ b/static/src/composables/useMarkdownRenderer.ts
@@ -509,26 +509,68 @@ function normalizeShowTagsPlugin() {
 }
 
 /**
- * 拦截 markdown 链接里的 download:// 协议，标记为下载链接。
- * 输入：[文件名.pdf](download:///output/file.pdf) 或 (download://output/file.pdf)
- * 输出：<a class="md-download-link" data-path="output/file.pdf" href="download://output/file.pdf">文件名.pdf</a>
- * 点击事件由 bootstrap.ts 统一拦截。
+ * 拦截 markdown 链接里的下载协议与工作区相对路径，标记为下载链接。
+ * 输入：[文件名.pdf](download:///output/file.pdf)、[报告](research/result.md)
+ * 输出：<a class="md-download-link" data-path="..." href="download://..." title="...">文件名.pdf</a>
+ * 点击事件由 bootstrap.ts 统一拦截（web 端 fetch 下载，Android 走原生桥接）。
  */
+/** 带 scheme 的绝对 URI（http/https/mailto/tel/ftp 等）都不是工作区文件 */
+const ABSOLUTE_SCHEME_RE = /^[a-z][a-z0-9+.-]*:/i;
+
+/** 判断 href 是否为工作区内文件的相对路径（排除协议链接、协议相对链接、页内锚点） */
+function isWorkspaceFileHref(href: string): boolean {
+  const trimmed = href.trim();
+  if (!trimmed || trimmed.startsWith('#') || trimmed.startsWith('//')) return false;
+  if (ABSOLUTE_SCHEME_RE.test(trimmed)) return false;
+  return true;
+}
+
+/** 从相对路径 href 提取工作区相对路径：去 query/hash、URL 解码、去前导斜杠 */
+function extractWorkspacePath(href: string): string {
+  let path = href.trim().split('#')[0].split('?')[0];
+  // 模型输出的链接可能本身已 percent 编码，还可能叠加多层（如 micromark 规范化或
+  // 模型对已编码串二次编码）；逐层解码直到没有合法 %XX 序列，上限 3 层防死循环
+  for (let i = 0; i < 3; i++) {
+    if (!/%[0-9a-fA-F]{2}/.test(path)) {
+      break;
+    }
+    try {
+      const decoded = decodeURIComponent(path);
+      if (decoded === path) {
+        break;
+      }
+      path = decoded;
+    } catch {
+      break; // 含非法编码序列时保留现状
+    }
+  }
+  return path.replace(/^\/+/, '');
+}
+
 function transformDownloadLinksPlugin() {
   return (tree: any) => {
     visit(tree, 'element', (node: any) => {
       if (!node || node.tagName !== 'a' || !node.properties) return;
       const href = node.properties.href;
       if (typeof href !== 'string') return;
+      let path: string;
       // 兼容 download:///path（三个斜杠，旧写法）和 download://path（两个斜杠，推荐写法）
-      const match = href.match(/^download:\/\/\/?(.*)$/i);
-      if (!match) return;
-      const rawPath = match[1];
-      const path = rawPath.replace(/^\/+/, '');
+      const dlMatch = href.match(/^download:\/{2,}(.*)$/i);
+      if (dlMatch) {
+        // 必须走多层解码：micromark 会把中文等非 ASCII 字符规范化为 percent 编码，
+        // 不解码直接当路径会再被 encodeURIComponent 编一层，服务器拿到字面 %XX 文件名
+        path = extractWorkspacePath(dlMatch[1]);
+      } else if (isWorkspaceFileHref(href)) {
+        path = extractWorkspacePath(href);
+      } else {
+        return;
+      }
       if (!path) return;
       node.properties.href = `download://${path}`;
       node.properties['data-path'] = path;
       node.properties['data-download'] = '1';
+      // hover 提示完整路径
+      node.properties.title = path;
       const existingClass = node.properties.className;
       if (Array.isArray(existingClass)) {
         if (!existingClass.includes('md-download-link')) {
@@ -576,7 +618,7 @@ const sanitizedSchema: Record<string, any> = {
       'ariaDescribedBy', 'ariaLabel', 'ariaLabelledBy',
       'dataFootnoteBackref', 'dataFootnoteRef',
       'data-path', 'data-download',
-      'href',
+      'href', 'title',
       // className: 合并默认的 data-footnote-backref 和我们的 md-download-link
       ['className', 'data-footnote-backref', 'md-download-link']
     ],
diff --git a/static/src/stores/quickDock.ts b/static/src/stores/quickDock.ts
index b7f15e40..cdb56c6f 100644
--- a/static/src/stores/quickDock.ts
+++ b/static/src/stores/quickDock.ts
@@ -105,9 +105,11 @@ export interface QuickDockMenuState {
   kind?: 'agent' | 'cmd';
   /** runner: task_id / command_id；file: 相对路径 */
   key: string;
-  /** fixed 定位坐标 */
+  /** fixed 定位坐标（top = 按钮下缘 + 间距） */
   left: number;
   top: number;
+  /** 按钮上缘坐标：下方空间不足时菜单翻转到按钮上方展开 */
+  btnTop: number;
   /** 菜单与触发按钮右对齐（runner 的 ⋯ 在行右侧） */
   alignRight: boolean;
 }
diff --git a/static/src/styles/components/chat/_chat-area.scss b/static/src/styles/components/chat/_chat-area.scss
index 6c30c3f2..0509155f 100644
--- a/static/src/styles/components/chat/_chat-area.scss
+++ b/static/src/styles/components/chat/_chat-area.scss
@@ -2469,15 +2469,43 @@ show-html[data-rendered='1'] {
   max-width: 100%;
 }
 
-// ===== download:// 链接样式 =====
+// ===== 文件下载链接样式（download:// 与工作区相对路径链接统一） =====
+// 版式对齐 ChatGPT：文件图标 + 链接文字 + 虚线下划线；颜色全部走三主题语义 token
 a.md-download-link {
-  color: var(--accent-primary);
-  text-decoration: underline;
+  color: var(--text-primary);
+  text-decoration: underline dotted;
+  text-decoration-color: var(--text-tertiary);
+  text-underline-offset: 3px;
+  /* 行高 2.5（正文 1.6）：撑高所在行盒，与上下两行拉开明显间距 */
+  line-height: 2.5;
   cursor: pointer;
-  transition: opacity 0.15s;
+  transition:
+    color 0.15s,
+    text-decoration-color 0.15s;
+
+  // 文件图标：mask 上色，跟随正文色（深色模式近白、浅色近黑）
+  &::before {
+    content: '';
+    display: inline-block;
+    /* 图标大于字高：顶部略过帽高线，底部下移到虚线下划线处（基线下 3px） */
+    width: 16px;
+    height: 16px;
+    margin-right: 4px;
+    vertical-align: -3px;
+    background-color: var(--text-primary);
+    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9.5 1.5h-5a1 1 0 0 0-1 1v11a1 1 0 0 0 1 1h7a1 1 0 0 0 1-1V4.5L9.5 1.5z'/%3E%3Cpath d='M9.5 1.5v3h3'/%3E%3Cpath d='M6 8h4M6 10.5h4'/%3E%3C/svg%3E");
+    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9.5 1.5h-5a1 1 0 0 0-1 1v11a1 1 0 0 0 1 1h7a1 1 0 0 0 1-1V4.5L9.5 1.5z'/%3E%3Cpath d='M9.5 1.5v3h3'/%3E%3Cpath d='M6 8h4M6 10.5h4'/%3E%3C/svg%3E");
+    -webkit-mask-size: contain;
+    mask-size: contain;
+    -webkit-mask-repeat: no-repeat;
+    mask-repeat: no-repeat;
+    -webkit-mask-position: center;
+    mask-position: center;
+  }
 
   &:hover {
-    opacity: 0.8;
+    color: var(--accent);
+    text-decoration-color: var(--accent);
   }
 }