diff --git a/pages_tool/ai-chat/ai-chat-message.vue b/pages_tool/ai-chat/ai-chat-message.vue
index eddb703..df63950 100644
--- a/pages_tool/ai-chat/ai-chat-message.vue
+++ b/pages_tool/ai-chat/ai-chat-message.vue
@@ -74,7 +74,7 @@
           <view class="message-content">
             <!-- AI昵称固定，不可修改 - 左移到气泡上方 -->
             <view class="message-nickname ai-nickname">
-              <text class="ai-nickname-text">{{ $lang('aiNickname') }}</text>
+              <text class="ai-nickname-text">{{ $lang('ai-chat.index.aiNickname') }}</text>
               <text class="message-time">{{ formatTime(message.timestamp) }}</text>
             </view>
             <view class="message-bubble"
@@ -119,7 +119,7 @@
               <view v-else-if="message.type === 'audio'" class="audio-content">
                 <view class="audio-player">
                   <view class="audio-info">
-                    <text class="audio-title">{{ message.title || $lang('audioMessage') }}</text>
+                    <text class="audio-title">{{ message.title || $lang('ai-chat.index.audioMessage') }}</text>
                     <text class="audio-duration">{{ formatDuration(message.duration) }}</text>
                   </view>
                   <view class="audio-controls">
@@ -157,7 +157,7 @@
                     @pause="onVideoPause(message)">
                   </video>
                   <view class="video-info">
-                    <text class="video-title">{{ message.title || $lang('videoMessage') }}</text>
+                    <text class="video-title">{{ message.title || $lang('ai-chat.index.videoMessage') }}</text>
                     <text class="video-duration">{{ formatDuration(message.duration) }}</text>
                   </view>
                 </view>
@@ -187,7 +187,7 @@
                     <text class="dot"></text>
                   </view>
                   <text class="loading-text">
-                    <text class="loading-status">{{ message.loadingText || $lang('aiThinking') }}</text>
+                    <text class="loading-status">{{ message.loadingText || $lang('ai-chat.index.aiThinking') }}</text>
                     <text class="loading-ellipsis">
                       <text class="ellipsis-dot">.</text>
                       <text class="ellipsis-dot">.</text>
@@ -232,7 +232,7 @@
         <textarea 
           v-model="inputText" 
           class="message-input"
-          :placeholder="$lang('inputPlaceholder')"
+          :placeholder="$lang('ai-chat.index.inputPlaceholder')"
           :maxlength="500"
           :auto-height="true"
           :show-confirm-bar="false"
@@ -258,7 +258,7 @@
           :class="{ disabled: !canSendMessage }"
           @click="sendMessage"
           :disabled="!canSendMessage">
-          <text>{{ $lang('send') }}</text>
+          <text>{{ $lang('ai-chat.index.send') }}</text>
         </button>
       </view>
     </view>
@@ -283,7 +283,7 @@
       <view class="expand-editor-mask" @click="closeExpandEditor"></view>
       <view class="expand-editor-panel">
         <view class="expand-editor-header">
-          <text>{{ $lang('expandEditorTitle') }}</text>
+          <text>{{ $lang('ai-chat.index.expandEditorTitle') }}</text>
           <button class="close-btn" @click="closeExpandEditor">
             <text>×</text>
           </button>
@@ -291,14 +291,14 @@
         <textarea 
           v-model="expandInputText" 
           class="expand-editor-input"
-          :placeholder="$lang('inputPlaceholder')"
+          :placeholder="$lang('ai-chat.index.inputPlaceholder')"
           :maxlength="500"
           :auto-height="true"
           :show-confirm-bar="false"
           :adjust-position="true"
           :focus="true" />
         <view class="expand-editor-footer">
-          <button class="expand-cancel-btn" @click="closeExpandEditor">{{ $lang('cancel') }}</button>
+          <button class="expand-cancel-btn" @click="closeExpandEditor">{{ $lang('ai-chat.index.cancel') }}</button>
           <button class="expand-send-btn" @click="sendFromExpandEditor" :disabled="!expandInputText.trim()">{{ $lang('send') }}</button>
         </view>
       </view>
@@ -397,7 +397,7 @@ export default {
       scrollTop: 0,
       scrollIntoViewId: null,
       hasMoreHistory: false,
-      loadingText: this.$lang('loadMoreHistory'),
+      loadingText: this.$lang('ai-chat.index.loadMoreHistory'),
       voiceInputing: false,
       audioContext: null,
       currentAudio: null,
@@ -417,7 +417,7 @@ export default {
       localUserAvatar: '',
     showAvatarSelector: false, // 头像选择弹窗控制
     localUserNickname: '', // 当前用户昵称
-    defaultNickname: this.$lang('defaultNickname'), // 默认昵称
+    defaultNickname: this.$lang('ai-chat.index.defaultNickname'), // 默认昵称
     showNicknameEditor: false, // 昵称编辑弹窗控制
     // AI头像错误状态
     avatarError: false,
@@ -857,7 +857,7 @@ async loadChatHistoryIfExist() {
         type: 'loading',
         content: '',
         timestamp: Date.now(),
-        loadingText: this.$lang('aiThinking'),
+        loadingText: this.$lang('ai-chat.index.aiThinking'),
         _loadingIndex: 0
       }
       this.shouldScrollToBottom = true
@@ -891,10 +891,10 @@ async loadChatHistoryIfExist() {
           id: ++this.messageId,
           role: 'ai',
           type: 'text',
-          content: this.$lang('serviceUnavailable'),
+          content: this.$lang('ai-chat.index.serviceUnavailable'),
           timestamp: Date.now(),
           actions: [
-            { id: 1, text: this.$lang('retry'), type: 'retry' }
+            { id: 1, text: this.$lang('ai-chat.index.retry'), type: 'retry' }
           ]
         }
         this.shouldScrollToBottom = true
@@ -975,7 +975,7 @@ async sendStreamMessage(userMessage) {
   this.isStreaming = true
   const loadingMsg = this.messages[loadingIdx]
   this._stopLoadingTextRotation(loadingMsg)
-  loadingMsg.loadingText = this.$lang('receivingReply')
+  loadingMsg.loadingText = this.$lang('ai-chat.index.receivingReply')
 
   let transformed = false
 
@@ -1041,9 +1041,9 @@ async sendStreamMessage(userMessage) {
       id: ++this.messageId,
       role: 'ai',
       type: 'text',
-      content: this.$lang('serviceTemporaryUnavailable'),
+      content: this.$lang('ai-chat.index.serviceTemporaryUnavailable'),
       timestamp: Date.now(),
-      actions: [{ id: 1, text: this.$lang('retry'), type: 'retry' }]
+      actions: [{ id: 1, text: this.$lang('ai-chat.index.retry'), type: 'retry' }]
     }
     this.messages.push(errorMsg)
     this.$emit('ai-response', errorMsg)
@@ -1087,9 +1087,9 @@ _handleStreamError(msg) {
     id: ++this.messageId,
     role: 'ai',
     type: 'text',
-    content: this.$lang('serviceTemporaryUnavailable'),
+    content: this.$lang('ai-chat.index.serviceTemporaryUnavailable'),
     timestamp: Date.now(),
-    actions: [{ id: 1, text: this.$lang('retry'), type: 'retry' }]
+    actions: [{ id: 1, text: this.$lang('ai-chat.index.retry'), type: 'retry' }]
   }
   this.messages.push(errorMsg)
   this.$emit('ai-response', errorMsg)
@@ -1097,10 +1097,10 @@ _handleStreamError(msg) {
     // 加载状态文字轮换 - 让AI看起来在处理不同阶段
     _startLoadingTextRotation(loadingMsg) {
       const statusTexts = [
-        this.$lang('aiThinkingStatus1'),
-        this.$lang('aiThinkingStatus2'),
-        this.$lang('aiThinkingStatus3'),
-        this.$lang('aiThinkingStatus4')
+        this.$lang('ai-chat.index.aiThinkingStatus1'),
+        this.$lang('ai-chat.index.aiThinkingStatus2'),
+        this.$lang('ai-chat.index.aiThinkingStatus3'),
+        this.$lang('ai-chat.index.aiThinkingStatus4')
       ]
       loadingMsg._rotationTimer = setInterval(() => {
         loadingMsg._loadingIndex = (loadingMsg._loadingIndex + 1) % statusTexts.length
@@ -1136,7 +1136,7 @@ _handleStreamError(msg) {
           return responses[key];
         }
       }
-      return this.$lang('autoReplyDefault', { question: userMessage });
+      return this.$lang('ai-chat.index.autoReplyDefault', { question: userMessage });
     },
 
 
@@ -1365,10 +1365,10 @@ _handleStreamError(msg) {
         return timeStr;
       }
       if (msgDate.getTime() === yesterday.getTime()) {
-        return `${this.$lang('timeFormatYesterday')} ${timeStr}`;
+        return `${this.$lang('ai-chat.index.timeFormatYesterday')} ${timeStr}`;
       }
       if (msgDate.getTime() === beforeYesterday.getTime()) {
-        return `${this.$lang('timeFormatBeforeYesterday')} ${timeStr}`;
+        return `${this.$lang('ai-chat.index.timeFormatBeforeYesterday')} ${timeStr}`;
       }
 
       const isCurrentYear = date.getFullYear() === now.getFullYear();
@@ -1385,9 +1385,9 @@ _handleStreamError(msg) {
     
     // 格式化文件大小
     formatFileSize(bytes) {
-      if (!bytes) return this.$lang('about')
+      if (!bytes) return this.$lang('ai-chat.index.about')
       const k = 1024
-      const sizes = [this.$lang('about'), 'KB', 'MB', 'GB']
+      const sizes = [this.$lang('ai-chat.index.about'), 'KB', 'MB', 'GB']
       const i = Math.floor(Math.log(bytes) / Math.log(k))
       return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + sizes[i]
     },
@@ -1426,7 +1426,7 @@ _handleStreamError(msg) {
       }
       this.isFetchingHistory = true;
       this.isLoadingHistory = true;
-      this.loadingText = this.$lang('loadingHistory');
+      this.loadingText = this.$lang('ai-chat.index.loadingHistory');
 
       try {
         const response = await aiService.getConversationHistory({
@@ -1475,12 +1475,12 @@ _handleStreamError(msg) {
         }
       } catch (error) {
         console.error('加载历史失败:', error);
-        uni.showToast({ title: this.$lang('loadHistoryFail'), icon: 'none' });
+        uni.showToast({ title: this.$lang('ai-chat.index.loadHistoryFail'), icon: 'none' });
         this.hasMoreHistory = false;
       } finally {
         this.isLoadingHistory = false;
         this.isFetchingHistory = false;
-        this.loadingText = this.$lang('loadMoreHistory');
+        this.loadingText = this.$lang('ai-chat.index.loadMoreHistory');
       }
     },
     // 显示更多工具
@@ -1490,7 +1490,7 @@ _handleStreamError(msg) {
 
     // 预览文件
     previewFile(message) {
-      uni.showLoading({ title: this.$lang('openingFile') })
+      uni.showLoading({ title: this.$lang('ai-chat.index.openingFile') })
       
       // #ifdef H5
       window.open(message.url, '_blank')
@@ -1500,7 +1500,7 @@ _handleStreamError(msg) {
       plus.runtime.openFile(message.url, {
         error: (e) => {
           uni.showToast({
-            title: this.$lang('fileOpenFail'),
+            title: this.$lang('ai-chat.index.fileOpenFail'),
             icon: 'none'
           })
         }
@@ -1674,7 +1674,7 @@ _handleStreamError(msg) {
         copyText = message.content || ''
       }
       if (!copyText) {
-        uni.showToast({ title: this.$lang('noContentToCopy'), icon: 'none' })
+        uni.showToast({ title: this.$lang('ai-chat.index.noContentToCopy'), icon: 'none' })
         return
       }
 
@@ -1688,7 +1688,7 @@ _handleStreamError(msg) {
       try {
         if (navigator.clipboard && navigator.clipboard.writeText) {
           navigator.clipboard.writeText(finalText).then(() => {
-            uni.showToast({ title: selectedText ? this.$lang('copySelected') : this.$lang('copySuccess'), icon: 'success' })
+            uni.showToast({ title: selectedText ? this.$lang('ai-chat.index.copySelected') : this.$lang('ai-chat.index.copySuccess'), icon: 'success' })
           }).catch(() => {
             this._fallbackCopyH5(finalText)
           })
@@ -1707,12 +1707,12 @@ _handleStreamError(msg) {
         data: copyText,
         success: () => {
           console.log('[AI Chat] 复制成功')
-          uni.showToast({ title: this.$lang('copySuccess'), icon: 'success' })
+          uni.showToast({ title: this.$lang('ai-chat.index.copySuccess'), icon: 'success' })
         },
         fail: (err) => {
           console.error('[AI Chat] 复制失败, 详细错误:', JSON.stringify(err))
           console.error('[AI Chat] 复制失败 errMsg:', err.errMsg || err.message || '无错误消息')
-          uni.showToast({ title: this.$lang('copyFailWithReason', { reason: err.errMsg || this.$lang('serviceUnavailable') }), icon: 'none', duration: 3000 })
+          uni.showToast({ title: this.$lang('ai-chat.index.copyFailWithReason', { reason: err.errMsg || this.$lang('ai-chat.index.serviceUnavailable') }), icon: 'none', duration: 3000 })
         }
       })
       // #endif
@@ -1733,12 +1733,12 @@ _handleStreamError(msg) {
         const success = document.execCommand('copy')
         document.body.removeChild(textarea)
         if (success) {
-          uni.showToast({ title: this.$lang('copySuccess'), icon: 'success' })
+          uni.showToast({ title: this.$lang('ai-chat.index.copySuccess'), icon: 'success' })
         } else {
-          uni.showToast({ title: this.$lang('copyFail'), icon: 'none' })
+          uni.showToast({ title: this.$lang('ai-chat.index.copyFail'), icon: 'none' })
         }
       } catch (e) {
-        uni.showToast({ title: this.$lang('copyFail'), icon: 'none' })
+        uni.showToast({ title: this.$lang('ai-chat.index.copyFail'), icon: 'none' })
       }
     },
 
@@ -1841,7 +1841,7 @@ _handleStreamError(msg) {
         type: 'loading',
         content: '',
         timestamp: Date.now(),
-        loadingText: this.$lang('aiThinking'),
+        loadingText: this.$lang('ai-chat.index.aiThinking'),
         _loadingIndex: 0
       }
 
@@ -1872,10 +1872,10 @@ _handleStreamError(msg) {
           id: ++this.messageId,
           role: 'ai',
           type: 'text',
-          content: this.$lang('serviceUnavailable'),
+          content: this.$lang('ai-chat.index.serviceUnavailable'),
           timestamp: Date.now(),
           actions: [
-            { id: 1, text: this.$lang('retry'), type: 'retry' }
+            { id: 1, text: this.$lang('ai-chat.index.retry'), type: 'retry' }
           ]
         }