diff --git a/lang/en-us/ai-chat/index.js b/lang/en-us/ai-chat/index.js
index f41d45d..59447c1 100644
--- a/lang/en-us/ai-chat/index.js
+++ b/lang/en-us/ai-chat/index.js
@@ -33,10 +33,6 @@ export const lang = {
 	noContentToCopy: 'No content to copy',
 	copySuccess: 'Copied',
 	copySelected: 'Copied selected content',
-	selectTextToCopy: 'Select text to copy',
-	selectedText: 'Selected',
-	copyAll: 'Copy all',
-	selectTextTip: 'Long press and drag the handles to choose any range',
 	copyFail: 'Copy failed',
 	copyFailWithReason: 'Copy failed: {reason}',
 	openingFile: 'Opening file...',
diff --git a/lang/zh-cn/ai-chat/index.js b/lang/zh-cn/ai-chat/index.js
index 6cb8f12..752f15b 100644
--- a/lang/zh-cn/ai-chat/index.js
+++ b/lang/zh-cn/ai-chat/index.js
@@ -33,10 +33,6 @@ export const lang = {
 	noContentToCopy: '无可复制的内容',
 	copySuccess: '已复制',
 	copySelected: '已复制选中内容',
-	selectTextToCopy: '选取文字复制',
-	selectedText: '已选文字',
-	copyAll: '复制全部',
-	selectTextTip: '长按文字拖动两端手柄，可自由选择复制范围',
 	copyFail: '复制失败',
 	copyFailWithReason: '复制失败：{reason}',
 	openingFile: '打开文件中...',
diff --git a/pages_tool/ai-chat/ai-chat-message.vue b/pages_tool/ai-chat/ai-chat-message.vue
index c5a0337..659b48d 100644
--- a/pages_tool/ai-chat/ai-chat-message.vue
+++ b/pages_tool/ai-chat/ai-chat-message.vue
@@ -37,18 +37,9 @@
         <!-- 用户消息 (WorkBuddy 风格: 右对齐 + 浅灰气泡 + 头像在右) -->
         <view v-if="message.role === 'user'" class="user-message">
           <view class="message-content">
-            <view class="message-bubble"
-              @contextmenu.prevent="onMessageLongPress(message)"
-              @touchstart="onBubbleTouchStart($event, message)"
-              @touchmove="onBubbleTouchMove"
-              @touchend="onBubbleTouchEnd"
-              @touchcancel="onBubbleTouchEnd">
+            <view class="message-bubble">
               <rich-text v-if="searchKeyword" :nodes="highlightContent(message.content)" class="message-rich-text" />
-              <text v-else class="message-text" selectable
-                @touchstart.stop
-                @touchmove.stop
-                @touchend.stop
-                @touchcancel.stop>{{ message.content }}</text>
+              <text v-else class="message-text" selectable>{{ message.content }}</text>
             </view>
           </view>
           <view class="avatar" @tap="showAvatarSelector = true">
@@ -74,35 +65,30 @@
               <text class="ai-nickname-text">{{ $lang('ai-chat.index.aiNickname') }}</text>
               <text class="message-time">{{ formatTime(message.timestamp) }}</text>
             </view>
-            <view class="message-bubble"
-              @contextmenu.prevent="onMessageLongPress(message)"
-              @touchstart="onBubbleTouchStart($event, message)"
-              @touchmove="onBubbleTouchMove"
-              @touchend="onBubbleTouchEnd"
-              @touchcancel="onBubbleTouchEnd">
-              <!-- 文本消息 -->
+            <view class="message-bubble">
+              <!-- 文本消息：小程序用 text selectable，H5 用可选择的 HTML 渲染 -->
               <view v-if="message.type === 'text'" class="text-content">
-                <!-- 微信小程序: rich-text 不支持选中文本,降级为 text selectable 以支持长按选择部分文字 -->
                 <!-- #ifdef MP-WEIXIN -->
-                <text class="ai-message-text" selectable
-                  @touchstart.stop
-                  @touchmove.stop
-                  @touchend.stop
-                  @touchcancel.stop>{{ _stripMarkdown(message.content) }}</text>
+                <text class="ai-message-text" selectable>{{ _stripMarkdown(message.content) }}</text>
                 <!-- #endif -->
                 <!-- #ifdef H5 -->
-                <rich-text :nodes="getAIDisplayContent(message.content)" />
+                <view class="ai-message-text selectable-md" v-html="getAIDisplayContent(message.content)"></view>
                 <!-- #endif -->
               </view>
-              
-              <!-- Markdown文档 -->
+
+              <!-- Markdown文档：小程序用 text selectable，H5 用可选择的 HTML 渲染 -->
               <view v-else-if="message.type === 'markdown'" class="markdown-content">
                 <view class="markdown-header">
                   <text class="iconfont icon-markdown"></text>
                   <text class="markdown-title"></text>
                 </view>
                 <view class="markdown-body">
-                  <rich-text :nodes="getAIDisplayContent(message.content)" />
+                  <!-- #ifdef MP-WEIXIN -->
+                  <text class="ai-message-text" selectable>{{ _stripMarkdown(message.content) }}</text>
+                  <!-- #endif -->
+                  <!-- #ifdef H5 -->
+                  <view class="selectable-md" v-html="getAIDisplayContent(message.content)"></view>
+                  <!-- #endif -->
                 </view>
               </view>
               
@@ -356,41 +342,6 @@
       </view>
     </view>
 
-    <!-- 选取文字复制弹窗：长按文字后可自由选取任意范围（含单个字符/标点）复制 -->
-    <view v-if="showSelectTextModal" class="select-text-popup">
-      <view class="select-text-mask" @click="closeSelectTextModal"></view>
-      <view class="select-text-panel">
-        <view class="select-text-header">
-          <text>{{ $lang('ai-chat.index.selectTextToCopy', '选取文字复制') }}</text>
-          <button class="close-btn" @click="closeSelectTextModal">
-            <text>×</text>
-          </button>
-        </view>
-        <view class="select-text-tip">{{ $lang('ai-chat.index.selectTextTip', '长按文字拖动两端手柄，可自由选择复制范围') }}</view>
-        <textarea
-          class="select-text-textarea"
-          :value="selectTextValue"
-          :maxlength="20000"
-          :auto-height="false"
-          :show-confirm-bar="false"
-          :adjust-position="true"
-          :focus="true"
-          :selection-start="selectStart"
-          :selection-end="selectEnd"
-          @input="onTextInput"
-          @selectionchange="onTextSelectionChange"
-          @blur="onTextBlur" />
-        <view class="select-text-preview" v-if="selectedPreview">
-          <text class="select-text-preview-label">{{ $lang('ai-chat.index.selectedText', '已选文字') }}：</text>
-          <text class="select-text-preview-content">{{ selectedPreview }}</text>
-        </view>
-        <view class="select-text-footer">
-          <button class="select-text-copy-btn" @click="copySelectedText">{{ selectedPreview ? $lang('ai-chat.index.copySelected', '已复制选中内容') : $lang('ai-chat.index.copyAll', '复制全部') }}</button>
-          <button class="select-text-close-btn" @click="closeSelectTextModal">{{ $lang('ai-chat.index.cancel', '关闭') }}</button>
-        </view>
-      </view>
-    </view>
-    
     <!-- 键盘垫高层：键盘弹出时平滑撑开空间将输入框上推 -->
     <view class="keyboard-spacer" :style="{ height: keyboardHeight + 'px' }"></view>
     
@@ -506,12 +457,6 @@ export default {
     localUserNickname: '', // 当前用户昵称
     defaultNickname: '', // 默认昵称
     showNicknameEditor: false, // 昵称编辑弹窗控制
-    // 选取文字复制弹窗
-    showSelectTextModal: false,
-    selectTextValue: '',   // 弹窗内文本域当前内容
-    selectStart: 0,        // 当前选中起点
-    selectEnd: 0,          // 当前选中终点
-    selectedPreview: '',   // 选中文字预览
     // AI头像错误状态
     avatarError: false,
     // 当前选中的 AI 模型, 显示在输入框左侧(如 Auto)
@@ -530,10 +475,6 @@ export default {
 	 isFetchingHistory: false,
     keyboardHeight: 0,
 
-    // 手动长按检测相关（touch 计时器）
-    _longPressTimer: null,
-    _longPressMessage: null,
-
     // 聊天记录搜索状态（由 AiChatSearch 组件事件同步）
     showSearchBar: false,
     searchKeyword: '',
@@ -1866,207 +1807,6 @@ _handleStreamError(msg) {
         .trim()
     },
 
-    // 长按/右键消息 → 弹出操作菜单（复制 / 分享 / 选取文字复制）
-    onMessageLongPress(message) {
-      // loading 消息不允许操作
-      if (message.type === 'loading') return
-
-      // #ifdef MP-WEIXIN
-      // 微信小程序：震动反馈提升手感（小米等 Android 设备也可用）
-      try {
-        wx.vibrateShort({ type: 'medium' })
-      } catch (e) { /* 不支持震动的设备忽略 */ }
-      // #endif
-
-      this.openMessageMenu(message)
-    },
-
-    // 打开消息操作菜单：复制 / 分享 / 选取文字复制
-    openMessageMenu(message) {
-      const text = message && message.content ? message.content : ''
-      if (!text) return
-
-      // #ifdef H5
-      // H5 优先使用原生浏览器上下文菜单体验（右键已出系统菜单时避免重复弹层）
-      // 仍提供底部操作菜单，保持与小程序一致
-      // #endif
-
-      uni.showActionSheet({
-        itemList: ['复制', '分享', this.$lang('ai-chat.index.selectTextToCopy', '选取文字复制')],
-        success: (res) => {
-          if (res.tapIndex === 0) {
-            this.copyMessage(message)
-          } else if (res.tapIndex === 1) {
-            this.shareMessage(message)
-          } else if (res.tapIndex === 2) {
-            this.openSelectTextModal(message)
-          }
-        },
-        fail: () => { /* 用户取消 */ }
-      })
-    },
-
-    // 分享消息内容（兼容微信小程序与 H5）
-    shareMessage(message) {
-      const text = message && message.content ? message.content : ''
-      if (!text) return
-
-      // #ifdef MP-WEIXIN
-      // 微信小程序：调起分享功能
-      try {
-        wx.showShareMenu({
-          withShareTicket: true,
-          menus: ['shareAppMessage', 'shareTimeline']
-        })
-      } catch (e) {
-        // 若当前页面未配置分享，降级为提示复制
-        uni.showToast({ title: '请长按使用系统分享', icon: 'none' })
-      }
-      // #endif
-
-      // #ifdef H5
-      // H5：调用 Web Share API，降级为复制到剪贴板
-      if (navigator.share) {
-        navigator.share({
-          title: '聊天记录',
-          text: text
-        }).catch(() => { /* 用户取消分享 */ })
-      } else {
-        this.copyMessage(message)
-        uni.showToast({ title: '已复制，可直接粘贴分享', icon: 'none' })
-      }
-      // #endif
-    },
-
-    // 打开"选取文字复制"弹窗：长按后可自由选取任意范围（含单个字符/标点）复制
-    openSelectTextModal(message) {
-      const text = message && message.content ? message.content : ''
-      if (!text) return
-      this.selectTextValue = text
-      this.selectStart = 0
-      this.selectEnd = 0
-      this.selectedPreview = ''
-      this.showSelectTextModal = true
-
-      // 下一帧自动全选，方便用户直接拖动手柄缩小范围（H5 / 微信小程序均适用）
-      this.$nextTick(() => {
-        this.selectStart = 0
-        this.selectEnd = text.length
-        // H5：绑定 textarea DOM 选区变化事件，实时同步选中范围
-        // #ifdef H5
-        try {
-          const el = document.querySelector('.select-text-textarea textarea') || document.querySelector('.select-text-textarea')
-          if (el) {
-            const sync = () => {
-              try {
-                const s = el.selectionStart || 0
-                const e = el.selectionEnd || 0
-                this.selectStart = s
-                this.selectEnd = e
-                this.selectedPreview = (el.value || '').substring(s, e)
-              } catch (err) { /* noop */ }
-            }
-            el.addEventListener('select', sync)
-            el.addEventListener('keyup', sync)
-            el.addEventListener('mouseup', sync)
-            el.addEventListener('touchend', sync)
-            el.focus()
-            el.select && el.select()
-            el.setSelectionRange && el.setSelectionRange(0, el.value.length)
-            sync()
-          }
-        } catch (e) { /* 部分环境不支持 */ }
-        // #endif
-      })
-    },
-
-    // 文本域输入：同步内容（用户若误编辑也能拿到最新文本）
-    onTextInput(event) {
-      const val = (event && event.detail && event.detail.value) || (event && event.target && event.target.value) || ''
-      this.selectTextValue = val
-    },
-
-    // 微信小程序：文本域选区变化（拖动两端手柄选择范围）
-    onTextSelectionChange(event) {
-      try {
-        const detail = event && event.detail
-        if (detail) {
-          this.selectStart = detail.start || 0
-          this.selectEnd = detail.end || 0
-          this.selectedPreview = (this.selectTextValue || '').substring(this.selectStart, this.selectEnd)
-        }
-      } catch (e) { /* noop */ }
-    },
-
-    // 失焦时兜底同步一次选区（H5 拖选结束时）
-    onTextBlur(event) {
-      try {
-        // #ifdef H5
-        const el = document.querySelector('.select-text-textarea textarea') || document.querySelector('.select-text-textarea')
-        if (el) {
-          const s = el.selectionStart || 0
-          const e = el.selectionEnd || 0
-          this.selectStart = s
-          this.selectEnd = e
-          this.selectedPreview = (el.value || '').substring(s, e)
-        }
-        // #endif
-      } catch (e) { /* noop */ }
-    },
-
-    // 复制选中范围（未选则复制全部）
-    copySelectedText() {
-      const text = this.selectTextValue || ''
-      if (!text) {
-        uni.showToast({ title: this.$lang('ai-chat.index.noContentToCopy'), icon: 'none' })
-        return
-      }
-      const start = Math.min(this.selectStart, this.selectEnd)
-      const end = Math.max(this.selectStart, this.selectEnd)
-      const selected = start < end ? text.substring(start, end) : ''
-      const copyText = selected || text
-      this.copyMessage({ content: copyText, _selected: !!selected })
-      this.closeSelectTextModal()
-    },
-
-    // 关闭"选取文字复制"弹窗
-    closeSelectTextModal() {
-      this.showSelectTextModal = false
-      this.selectTextValue = ''
-      this.selectStart = 0
-      this.selectEnd = 0
-      this.selectedPreview = ''
-    },
-
-    // 手动长按检测（touch 事件方案，兼容所有平台）
-    // 在 H5 desktop 上用 @contextmenu 触发，
-    // 在 H5 mobile / 小米微信小程序等场景靠 touch 计时器兜底
-    onBubbleTouchStart(event, message) {
-      // 单指长按才触发，忽略多点触控
-      if (event.touches && event.touches.length > 1) return
-      this._longPressMessage = message
-      this._longPressTimer = setTimeout(() => {
-        this._longPressTimer = null
-        this.onMessageLongPress(message)
-      }, 500) // 和系统长按接近的 500ms
-    },
-    onBubbleTouchMove() {
-      // 手指移动（滚动列表）→ 取消长按
-      if (this._longPressTimer) {
-        clearTimeout(this._longPressTimer)
-        this._longPressTimer = null
-      }
-      this._longPressMessage = null
-    },
-    onBubbleTouchEnd() {
-      // 手指提前松开 → 取消长按
-      if (this._longPressTimer) {
-        clearTimeout(this._longPressTimer)
-        this._longPressTimer = null
-      }
-      this._longPressMessage = null
-    },
-
     // 复制消息内容到剪贴板（兼容 H5 / 微信小程序）
     copyMessage(message) {
       let copyText = message.content || ''
@@ -4113,158 +3853,26 @@ _handleStreamError(msg) {
     }
   }
 
-/* 选取文字复制弹窗 */
-.select-text-popup {
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  z-index: 1001;
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: flex-end;
-
-  .select-text-mask {
-    position: absolute;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background-color: rgba(0, 0, 0, 0.4);
-  }
-
-  .select-text-panel {
-    position: relative;
-    width: 100%;
-    height: 70%;
-    display: flex;
-    flex-direction: column;
-    background-color: #fff;
-    border-radius: 24rpx 24rpx 0 0;
-    overflow: hidden;
-
-    .select-text-header {
-      display: flex;
-      justify-content: space-between;
-      align-items: center;
-      padding: 24rpx 32rpx;
-      border-bottom: 1rpx solid #e5e5e5;
-      background-color: #f9f9f9;
-
-      text {
-        font-size: 32rpx;
-        font-weight: 500;
-        color: #333;
-      }
-
-      .close-btn {
-        width: 64rpx;
-        height: 64rpx;
-        border-radius: 50%;
-        background-color: transparent;
-        display: flex;
-        align-items: center;
-        justify-content: center;
-        border: none;
-        padding: 0;
-
-        text {
-          font-size: 48rpx;
-          color: #999;
-          line-height: 1;
-        }
-      }
-    }
-
-    .select-text-tip {
-      padding: 16rpx 32rpx 0;
-      font-size: 24rpx;
-      color: #999;
-      background-color: #f9f9f9;
-    }
-
-    .select-text-textarea {
-      flex: 1;
-      width: 100%;
-      padding: 32rpx;
-      font-size: 30rpx;
-      line-height: 1.6;
-      color: #333;
-      background-color: #fff;
-      border: none;
-      box-sizing: border-box;
-    }
-
-    .select-text-preview {
-      max-height: 200rpx;
-      overflow-y: auto;
-      padding: 20rpx 32rpx;
-      border-top: 1rpx dashed #e5e5e5;
-      background-color: #f6f8fa;
-      font-size: 26rpx;
-      color: #555;
-      word-break: break-all;
-
-      .select-text-preview-label {
-        color: #999;
-        margin-right: 8rpx;
-      }
-
-      .select-text-preview-content {
-        color: #07c160;
-        font-weight: 500;
-      }
-    }
-
-    .select-text-footer {
-      display: flex;
-      align-items: center;
-      justify-content: space-between;
-      padding: 24rpx 32rpx;
-      padding-bottom: calc(24rpx + env(safe-area-inset-bottom));
-      border-top: 1rpx solid #e5e5e5;
-      background-color: #f9f9f9;
-
-      .select-text-copy-btn {
-        flex: 1;
-        height: 80rpx;
-        border-radius: 40rpx;
-        background-color: #07c160;
-        color: #fff;
-        font-size: 28rpx;
-        font-weight: 500;
-        border: none;
-        display: flex;
-        align-items: center;
-        justify-content: center;
-        margin-right: 20rpx;
-      }
-
-      .select-text-close-btn {
-        width: 160rpx;
-        height: 80rpx;
-        border-radius: 40rpx;
-        background-color: #f2f2f2;
-        color: #666;
-        font-size: 28rpx;
-        border: none;
-        display: flex;
-        align-items: center;
-        justify-content: center;
-      }
-    }
-  }
-}
-
-  // H5 下允许 rich-text 内容文本选择（鼠标拖选复制）
+  // H5 下允许 rich-text / v-html 内容文本选择（鼠标拖选复制）
   .text-content,
-  .markdown-body {
+  .markdown-body,
+  .selectable-md {
     user-select: text;
     -webkit-user-select: text;
   }
 
+  .selectable-md {
+    font-size: 28rpx;
+    line-height: 1.7;
+    color: #333;
+
+    // 保证 v-html 内部段落、列表等不影响选择
+    p, ul, ol, li, h1, h2, h3, h4, h5, h6, code, pre {
+      user-select: text;
+      -webkit-user-select: text;
+    }
+  }
+
   // 用户消息 rich-text 高亮（搜索时替代 <text>）
   .message-rich-text {
     font-size: 28rpx;