diff --git a/frontend/src/components/FileSystem/components/Sidebar.vue b/frontend/src/components/FileSystem/components/Sidebar.vue
index f4f5303..b04244e 100644
--- a/frontend/src/components/FileSystem/components/Sidebar.vue
+++ b/frontend/src/components/FileSystem/components/Sidebar.vue
@@ -1,6 +1,6 @@
 <template>
   <transition name="slide">
-    <div v-show="config.visible" class="sidebar">
+    <div v-show="config.visible" class="sidebar" :style="{ width: width + 'px' }">
       <template v-for="section in sectionOrder" :key="section">
       <!-- 服务器区块 -->
       <div v-if="section === 'server' && showServer" class="sidebar-section">
@@ -54,65 +54,79 @@
         </div>
         <div class="section-content-wrap" :class="{ collapsed: favCollapsed }">
           <div class="section-content fav-content">
-          <div
+          <a-dropdown
             v-for="(fav, index) in config.favoriteFiles"
             :key="fav.path"
-            class="sidebar-item"
-            :class="{
-              'sidebar-item-pinned': fav.pinnedAt,
-              'sidebar-item-pinned-first': index === firstPinnedIndex,
-              'sidebar-item-pinned-last': index === lastPinnedIndex,
-              'sidebar-item-dragging': config.draggingState.isDragging && config.draggingState.draggedIndex === index,
-              'sidebar-item-drag-over': config.draggingState.isDragging && config.draggingState.draggedIndex !== index
-            }"
-            :draggable="config.draggingState.pressedIndex === index || config.draggingState.isDragging"
-            @click="handleOpenFavorite(fav)"
-            @mousedown="handleLongPressStart($event, index)"
-            @mouseup="handleLongPressCancel"
-            @mouseleave="handleLongPressCancel"
-            @touchstart="handleLongPressStart($event, index)"
-            @touchend="handleLongPressCancel"
-            @touchcancel="handleLongPressCancel"
-            @dragstart="handleDragStart($event, index)"
-            @dragover="handleDragOver($event)"
-            @drop="handleDrop($event, index)"
-            @dragend="handleDragEnd"
+            trigger="contextMenu"
+            align-point
+            :popup-visible="favCtxMenuIndex === index"
+            @popup-visible-change="(v: boolean) => onFavCtxVisible(index, v)"
           >
-            <span class="sidebar-item-icon">{{ getFileIcon(fav) }}</span>
-            <span class="sidebar-item-name" :title="favoriteTooltip(fav)">{{ favoriteName(fav) }}</span>
-            <a-button
-              type="text"
-              size="mini"
-              @click.stop="handleTogglePin(fav)"
-              class="sidebar-item-pin"
-              :class="{ 'is-pinned': fav.pinnedAt }"
+            <div
+              class="sidebar-item"
+              :class="{
+                'sidebar-item-pinned': fav.pinnedAt,
+                'sidebar-item-pinned-first': index === firstPinnedIndex,
+                'sidebar-item-pinned-last': index === lastPinnedIndex,
+                'sidebar-item-dragging': config.draggingState.isDragging && config.draggingState.draggedIndex === index,
+                'sidebar-item-drag-over': config.draggingState.isDragging && config.draggingState.draggedIndex !== index
+              }"
+              :draggable="config.draggingState.pressedIndex === index || config.draggingState.isDragging"
+              @click="handleOpenFavorite(fav)"
+              @mousedown="handleLongPressStart($event, index)"
+              @mouseup="handleLongPressCancel"
+              @mouseleave="handleLongPressCancel"
+              @touchstart="handleLongPressStart($event, index)"
+              @touchend="handleLongPressCancel"
+              @touchcancel="handleLongPressCancel"
+              @dragstart="handleDragStart($event, index)"
+              @dragover="handleDragOver($event)"
+              @drop="handleDrop($event, index)"
+              @dragend="handleDragEnd"
             >
-              <template #icon>
-                <icon-pushpin :style="{ opacity: fav.pinnedAt ? 1 : 0.4 }" />
-              </template>
-            </a-button>
-            <a-button
-              type="text"
-              size="mini"
-              title="重命名收藏"
-              @click.stop="openRename(fav)"
-              class="sidebar-item-rename"
-            >
-              <template #icon>
-                <icon-edit />
-              </template>
-            </a-button>
-            <a-button
-              type="text"
-              size="mini"
-              @click.stop="handleRemoveFavorite(fav)"
-              class="sidebar-item-remove"
-            >
-              <template #icon>
-                <icon-close />
-              </template>
-            </a-button>
-          </div>
+              <span class="sidebar-item-icon">{{ getFileIcon({ is_dir: fav.isDir, name: fav.name }) }}</span>
+              <span class="sidebar-item-name" :title="favoriteTooltip(fav)">{{ favoriteName(fav) }}</span>
+              <a-dropdown
+                trigger="click"
+                :popup-visible="favMenuIndex === index"
+                @popup-visible-change="(v: boolean) => onFavMenuVisible(index, v)"
+              >
+                <a-button type="text" size="mini" title="更多操作" class="sidebar-item-more" @click.stop>
+                  <template #icon>
+                    <icon-more />
+                  </template>
+                </a-button>
+                <template #content>
+                  <a-doption @click="openRename(fav)">
+                    <template #icon><icon-edit /></template>
+                    重命名
+                  </a-doption>
+                  <a-doption @click="handleTogglePin(fav)">
+                    <template #icon><icon-pushpin /></template>
+                    {{ fav.pinnedAt ? '取消置顶' : '置顶' }}
+                  </a-doption>
+                  <a-doption class="danger" @click="handleRemoveFavorite(fav)">
+                    <template #icon><icon-close /></template>
+                    删除
+                  </a-doption>
+                </template>
+              </a-dropdown>
+            </div>
+            <template #content>
+              <a-doption @click="openRename(fav)">
+                <template #icon><icon-edit /></template>
+                重命名
+              </a-doption>
+              <a-doption @click="handleTogglePin(fav)">
+                <template #icon><icon-pushpin /></template>
+                {{ fav.pinnedAt ? '取消置顶' : '置顶' }}
+              </a-doption>
+              <a-doption class="danger" @click="handleRemoveFavorite(fav)">
+                <template #icon><icon-close /></template>
+                删除
+              </a-doption>
+            </template>
+          </a-dropdown>
           <div v-if="config.favoriteFiles.length === 0" class="sidebar-empty">
             <icon-star />
             <span>暂无收藏</span>
@@ -158,6 +172,7 @@
       :placeholder="renameOriginal"
       :max-length="255"
       allow-clear
+      @keydown.enter.prevent="confirmRename"
     />
   </a-modal>
 
@@ -200,7 +215,7 @@ import type { SidebarConfig, FavoriteFile } from '@/types/file-system'
 import type { SystemInfo } from '@/api/connection-manager'
 import { connectionManager } from '@/api/connection-manager'
 import { useConfigStore } from '@/stores/config'
-import { IconStar, IconClose, IconPushpin, IconEdit, IconDown, IconRight, IconStorage, IconComputer, IconDesktop, IconPlus, IconCheckCircle } from '@arco-design/web-vue/es/icon'
+import { IconStar, IconClose, IconPushpin, IconEdit, IconMore, IconDown, IconRight, IconStorage, IconComputer, IconDesktop, IconPlus, IconCheckCircle } from '@arco-design/web-vue/es/icon'
 import { getFileIcon } from '@/utils/fileUtils'
 
 const configStore = useConfigStore()
@@ -208,6 +223,7 @@ const configStore = useConfigStore()
 // Props
 interface Props {
   config: SidebarConfig
+  width: number
 }
 
 const props = defineProps<Props>()
@@ -399,6 +415,20 @@ const handleTogglePin = (file: FavoriteFile) => {
   emit('togglePin', file.path)
 }
 
+// 收藏项双菜单受控互斥：右键菜单与「...」点击菜单，一方展开强制收起另一方
+const favMenuIndex = ref(-1)
+const favCtxMenuIndex = ref(-1)
+
+function onFavCtxVisible(index: number, visible: boolean) {
+  favCtxMenuIndex.value = visible ? index : -1
+  if (visible) favMenuIndex.value = -1
+}
+
+function onFavMenuVisible(index: number, visible: boolean) {
+  favMenuIndex.value = visible ? index : -1
+  if (visible) favCtxMenuIndex.value = -1
+}
+
 // 重命名收藏弹窗（预填展示名，placeholder 显示原名）
 const renameVisible = ref(false)
 const renameValue = ref('')
@@ -429,6 +459,11 @@ const handleRenameOk = (done: (closed?: boolean) => void) => {
   done()
 }
 
+// 输入框回车与点击确定走同一提交逻辑
+const confirmRename = () => {
+  handleRenameOk(() => { renameVisible.value = false })
+}
+
 // 展示名优先，未设置回退原名
 const favoriteName = (fav: FavoriteFile): string => fav.displayName || fav.name
 
@@ -891,17 +926,8 @@ function handleDelete(p: { id: string; name: string }) {
   text-overflow: ellipsis;
 }
 
-.sidebar-item-remove {
-  opacity: 0;
-  transition: opacity 0.2s;
-}
-
-.sidebar-item:hover .sidebar-item-remove {
-  opacity: 1;
-}
-
 .sidebar-item-pinned {
-  background: var(--color-fill-1);
+  background: var(--arcoblue-1);
   border-radius: 0;
 }
 
@@ -917,21 +943,13 @@ function handleDelete(p: { id: string; name: string }) {
   border-radius: 6px;
 }
 
-.sidebar-item-pin {
+/* 「...」操作菜单按钮，悬停收藏项时显示 */
+.sidebar-item-more {
   opacity: 0;
   transition: opacity 0.2s;
 }
 
-.sidebar-item:hover .sidebar-item-pin {
-  opacity: 1;
-}
-
-.sidebar-item-rename {
-  opacity: 0;
-  transition: opacity 0.2s;
-}
-
-.sidebar-item:hover .sidebar-item-rename {
+.sidebar-item:hover .sidebar-item-more {
   opacity: 1;
 }
 
@@ -979,6 +997,17 @@ function handleDelete(p: { id: string; name: string }) {
 }
 </style>
 
+<!-- 非 scoped：Arco 下拉菜单挂载在 body 下，删除项标红需全局样式 -->
+<style>
+.arco-dropdown-option.danger {
+  color: rgb(var(--danger-6));
+}
+
+.arco-dropdown-option.danger:hover {
+  background: rgb(var(--danger-1));
+}
+</style>
+
 <!-- 非 scoped：Teleport 到 body 的面板样式 -->
 <style>
 /* 弹出面板公共 */
diff --git a/frontend/src/components/FileSystem/index.vue b/frontend/src/components/FileSystem/index.vue
index 2250e20..c123314 100644
--- a/frontend/src/components/FileSystem/index.vue
+++ b/frontend/src/components/FileSystem/index.vue
@@ -1,11 +1,12 @@
 <template>
   <div class="file-system-container">
     <!-- 主内容区：左侧边栏 + 右侧工作区 -->
-    <div class="main-content">
+    <div ref="mainContentRef" class="main-content">
       <!-- 左侧收藏夹侧边栏（全高） -->
       <Sidebar
         v-if="showSidebar"
         :config="sidebarConfig"
+        :width="sidebarWidth"
         @open-favorite="handleOpenFavorite"
         @remove-favorite="handleRemoveFavorite"
         @toggle-pin="handleToggleFavPin"
@@ -20,6 +21,9 @@
         @server-select="handleConnectionChanged"
       />
 
+      <!-- 侧边栏拖宽把手 -->
+      <div v-if="showSidebar" class="sidebar-resizer" @mousedown="handleSidebarResizeWithOverlay"></div>
+
       <!-- 右侧工作区：面包屑工具栏 + 文件列表/编辑器 -->
       <div class="workspace-area">
         <!-- 面包屑导航工具栏 -->
@@ -272,6 +276,58 @@ const savePanelWidth = (width: { left: number; right: number }) => {
 const panelWidth = ref(restorePanelWidth())
 const workspaceRef = ref<HTMLElement | null>(null)
 
+// 侧边栏宽度（拖拽调整，localStorage 持久化）
+const restoreSidebarWidth = (): number => {
+  try {
+    const saved = localStorage.getItem(STORAGE_KEYS.FILESYSTEM.SIDEBAR_WIDTH)
+    if (saved) {
+      const width = Number(saved)
+      if (Number.isFinite(width)) {
+        return Math.min(DEFAULTS.MAX_SIDEBAR_WIDTH, Math.max(DEFAULTS.MIN_SIDEBAR_WIDTH, width))
+      }
+    }
+  } catch (error) {
+    console.error('恢复侧边栏宽度失败:', error)
+  }
+  return DEFAULTS.SIDEBAR_WIDTH
+}
+
+const saveSidebarWidth = (width: number) => {
+  try {
+    localStorage.setItem(STORAGE_KEYS.FILESYSTEM.SIDEBAR_WIDTH, String(width))
+  } catch (error) {
+    console.error('保存侧边栏宽度失败:', error)
+  }
+}
+
+const sidebarWidth = ref(restoreSidebarWidth())
+const mainContentRef = ref<HTMLElement | null>(null)
+
+const handleSidebarHorizontalResize = createResizeHandler(
+  () => mainContentRef.value,
+  () => sidebarWidth.value,
+  {
+    direction: 'horizontal',
+    outputMode: 'pixels',
+    minPercent: 0,
+    maxPercent: 100,
+    minPixels: DEFAULTS.MIN_SIDEBAR_WIDTH,
+    onResize: (px) => {
+      sidebarWidth.value = Math.min(DEFAULTS.MAX_SIDEBAR_WIDTH, Math.max(DEFAULTS.MIN_SIDEBAR_WIDTH, px))
+    },
+    onResizeEnd: () => {
+      isResizing.value = false
+      saveSidebarWidth(sidebarWidth.value)
+    },
+  }
+)
+
+// mousedown 时复用工作区遮罩，防止拖拽经过编辑器 iframe 时丢事件
+const handleSidebarResizeWithOverlay = (e: MouseEvent) => {
+  isResizing.value = true
+  handleSidebarHorizontalResize(e)
+}
+
 // 系统路径（使用 composable）
 const { commonPaths, systemPaths, loadCommonPaths } = useCommonPaths()
 
@@ -2094,6 +2150,19 @@ watch(() => themeStore.isDark, async () => {
   background: var(--color-primary-light-1);
 }
 
+/* 侧边栏拖宽把手（与文件列表区分隔条同款） */
+.sidebar-resizer {
+  width: 3px;
+  background: var(--color-border);
+  cursor: col-resize;
+  transition: background 0.2s;
+  flex-shrink: 0;
+}
+
+.sidebar-resizer:hover {
+  background: var(--color-primary-light-1);
+}
+
 .resize-overlay {
   position: absolute;
   inset: 0;
diff --git a/frontend/src/utils/constants.js b/frontend/src/utils/constants.js
index b25b2ce..7fa716d 100644
--- a/frontend/src/utils/constants.js
+++ b/frontend/src/utils/constants.js
@@ -23,6 +23,7 @@ export const STORAGE_KEYS = {
     PATH_HISTORY: 'app-filesystem-path-history',
     FILE_CONTENT_HEIGHT: 'app-filesystem-file-content-height',
     PANEL_WIDTH: 'app-filesystem-panel-width',
+    SIDEBAR_WIDTH: 'app-filesystem-sidebar-width',
     SIDEBAR_VISIBLE: 'app-filesystem-sidebar-visible',
     FAVORITE_FILES: 'app-filesystem-favorite-files',
     EDIT_MODE: 'app-filesystem-edit-mode', // HTML/Markdown 编辑模式状态
@@ -334,8 +335,12 @@ export const DEFAULTS = {
   MAX_PANEL_WIDTH: 80,
   DEFAULT_PANEL_WIDTH: 50,
 
-  // 侧边栏宽度（px）
+  // 侧边栏默认宽度（px）
   SIDEBAR_WIDTH: 220,
+
+  // 侧边栏宽度范围（px）
+  MIN_SIDEBAR_WIDTH: 180,
+  MAX_SIDEBAR_WIDTH: 420,
 }
 
 /**