改动结果：

聊天窗口工具栏新增了“表情”按钮，打开表情库弹窗。
表情库会从历史“已下载落盘的表情消息”里自动聚合。
选中后直接通过 send_emoji_message(wxid, md5, total_length) 发原生表情，不是当普通图片发。
仍保持你现在的发送通道和聊天刷新逻辑。
主要改动文件：

后端接口与发送支持：contacts.py
表情资源查询：message_storage.py
前端表情面板与发送交互：contacts_management.html
新增接口：

GET /contacts/api/emojis：返回聚合后的表情库（md5、total_length、预览图）。
POST /contacts/api/send_message 新增 type=emoji。
我也做了 Python 语法检查，相关后端文件都通过了。
你可以直接在聊天弹窗里点“表情”试一下。如果表情库为空，通常是该群还没落盘到 image_path，让媒体下载功能先抓几条表情就会出现。

admin/dashboard/templates/contacts_management.html

@@ -679,6 +679,7 @@
                     <el-upload class="upload-demo" action="#" :http-request="uploadImage" :show-file-list="false" accept="image/*">
                         <el-button size="small" type="primary" plain icon="el-icon-picture-outline">图片</el-button>
                     </el-upload>
+                    <el-button size="small" type="primary" plain icon="el-icon-star-off" @click="openEmojiDialog">表情</el-button>
                     <el-upload class="upload-demo" action="#" :http-request="uploadVoice" :show-file-list="false" accept=".mp3,.wav,audio/*">
                         <el-button size="small" type="primary" plain icon="el-icon-microphone">语音</el-button>
                     </el-upload>
@@ -703,6 +704,25 @@
             <el-button type="primary" @click="sendLinkMessage">发送</el-button>
         </span>
     </el-dialog>
+
+    <el-dialog title="表情库" :visible.sync="emojiDialogVisible" width="52%">
+        <div class="emoji-toolbar">
+            <el-input v-model="emojiKeyword" clearable placeholder="搜索 md5..." size="small"></el-input>
+            <el-button size="small" icon="el-icon-refresh" :loading="emojiLibraryLoading" @click="loadEmojiLibrary">刷新</el-button>
+        </div>
+        <div class="emoji-grid" v-loading="emojiLibraryLoading">
+            {% raw %}
+            <div v-if="!filteredEmojiLibrary.length" class="emoji-empty">暂无可用表情，先在群里让媒体下载插件抓取几条表情。</div>
+            <div v-for="item in filteredEmojiLibrary" :key="item.md5" class="emoji-card">
+                <img class="emoji-thumb" :src="getChatMediaUrl(item.preview_url)" />
+                <div class="emoji-md5">{{ item.md5 }}</div>
+                <div class="emoji-actions">
+                    <el-button type="primary" size="mini" @click="sendEmojiItem(item)">发送</el-button>
+                </div>
+            </div>
+            {% endraw %}
+        </div>
+    </el-dialog>
 </div>
 {% endblock %}
 
@@ -739,7 +759,11 @@
                 chatDialogVisible: false, currentChatUser: null, messageInput: '', chatMessages: [], chatLoading: false, chatSending: false,
                 chatType: 'personal', chatHistoryTip: '最近 20 条消息',
                 linkDialogVisible: false,
-                linkForm: { url: '', title: '', description: '' }
+                linkForm: { url: '', title: '', description: '' },
+                emojiDialogVisible: false,
+                emojiLibraryLoading: false,
+                emojiLibrary: [],
+                emojiKeyword: ''
             };
         },
         computed: {
@@ -781,6 +805,11 @@
                     { label: '插件调用', value: overview.plugin_call_count_30d || 0, note: '近30天插件总触发次数' },
                     { label: '插件种类', value: overview.plugin_count_30d || 0, note: '本群真实使用到的插件数' }
                 ];
+            },
+            filteredEmojiLibrary() {
+                const keyword = (this.emojiKeyword || '').trim().toLowerCase();
+                if (!keyword) return this.emojiLibrary;
+                return this.emojiLibrary.filter(item => (item.md5 || '').toLowerCase().includes(keyword));
             }
         },
         mounted() {
@@ -1319,6 +1348,50 @@
                     this.linkDialogVisible = false;
                 }
             },
+            openEmojiDialog() {
+                if (!this.currentChatUser || !this.currentChatUser.wxid) return;
+                this.emojiDialogVisible = true;
+                this.loadEmojiLibrary();
+            },
+            async loadEmojiLibrary() {
+                this.emojiLibraryLoading = true;
+                try {
+                    const response = await axios.get('/contacts/api/emojis', { params: { limit: 300 } });
+                    if (response.data.success) {
+                        const list = (response.data.data && response.data.data.emojis) || [];
+                        this.emojiLibrary = Array.isArray(list) ? list : [];
+                    } else {
+                        this.$message.error(response.data.message || '加载表情库失败');
+                    }
+                } catch (error) {
+                    console.error('加载表情库失败:', error);
+                    this.$message.error('加载表情库失败');
+                } finally {
+                    this.emojiLibraryLoading = false;
+                }
+            },
+            async sendEmojiItem(item) {
+                if (!this.currentChatUser || !this.currentChatUser.wxid) return;
+                const md5 = item && item.md5;
+                const totalLength = item && item.total_length;
+                if (!md5 || !totalLength) {
+                    this.$message.error('该表情缺少发送参数');
+                    return;
+                }
+                const localMessage = this.appendLocalChatMessage({
+                    displayType: 'image',
+                    content: '[表情]',
+                    mediaUrl: this.getChatMediaUrl(item.preview_url || '')
+                });
+                await this.sendChatPayload({
+                    wxid: this.currentChatUser.wxid,
+                    type: 'emoji',
+                    content: {
+                        md5: md5,
+                        total_length: totalLength
+                    }
+                }, '表情消息已提交到 iPad 通道', localMessage.messageId);
+            },
             handleChatInputKeydown(event) {
                 if (event.key === 'Enter' && !event.shiftKey) {
                     event.preventDefault();
@@ -1493,6 +1566,19 @@
     .message-self .message-sender, .message-self .message-time, .message-self .message-link-title { color: #ffffff; }
     .input-area { padding: 20px 0 0; }
     .toolbar { margin-top: 12px; display: flex; gap: 10px; flex-wrap: wrap; }
+    .emoji-toolbar { display: flex; gap: 10px; margin-bottom: 12px; }
+    .emoji-grid {
+        min-height: 280px; max-height: 520px; overflow-y: auto;
+        display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px;
+    }
+    .emoji-card {
+        border: 1px solid rgba(148,163,184,0.16); border-radius: 12px; padding: 8px;
+        display: flex; flex-direction: column; gap: 8px; align-items: center; background: #fff;
+    }
+    .emoji-thumb { width: 72px; height: 72px; object-fit: contain; border-radius: 8px; background: rgba(148,163,184,0.08); }
+    .emoji-md5 { font-size: 11px; color: #64748b; word-break: break-all; text-align: center; min-height: 30px; }
+    .emoji-actions { width: 100%; display: flex; justify-content: center; }
+    .emoji-empty { color: #94a3b8; padding: 12px; }
     @media (max-width: 1200px) {
         .diagnosis-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
     }