【新增】AI：新增 chat 对话界面（草稿状态）

src/views/ai/chat/index.vue

+<template>
+  <el-container>
+    <!-- 左侧：会话列表 -->
+    <el-aside width="260px" class="conversation-container">
+      <!-- 左顶部：新建对话 -->
+      <el-button class="w-1/1" type="primary">
+        <Icon icon="ep:plus" class="mr-5px" />
+        新建对话
+      </el-button>
+      <!-- 左顶部：搜索对话 -->
+      <el-input
+        v-model="searchName"
+        class="mt-10px"
+        placeholder="搜索历史记录"
+        @keyup="searchConversation"
+      >
+        <template #prefix>
+          <Icon icon="ep:search" />
+        </template>
+      </el-input>
+      <!-- 左中间：对话列表 -->
+      <div class="conversation-list" :style="{ height: leftHeight + 'px' }">
+        <el-row v-for="conversation in conversationList" :key="conversation.id">
+          <div
+            :class="conversation.id === conversationId ? 'conversation active' : 'conversation'"
+            @click="changeConversation(conversation)"
+          >
+            <el-image :src="conversation.avatar" class="avatar" />
+            <span class="title">{{ conversation.title }}</span>
+            <span class="button">
+              <!-- TODO 芋艿：缺置顶按钮 -->
+              <el-icon title="编辑" @click="updateConversationTitle(conversation)">
+                <Icon icon="ep:edit" />
+              </el-icon>
+              <el-icon title="删除会话" @click="deleteConversationTitle(conversation)">
+                <Icon icon="ep:delete" />
+              </el-icon>
+            </span>
+          </div>
+        </el-row>
+      </div>
+      <!-- 左底部：工具栏 TODO 芋艿：50% 不太对 -->
+      <div class="tool-box">
+        <sapn class="w-1/2"> <Icon icon="ep:user" /> 角色仓库 </sapn>
+        <sapn class="w-1/2"> <Icon icon="ep:delete" />清空未置顶对话</sapn>
+      </div>
+    </el-aside>
+    <!-- 右侧：会话详情 -->
+    <el-container class="detail-container">
+      <!-- 右顶部 TODO 芋艿：右对齐 -->
+      <el-header class="header">
+        <el-button>3.5-turbo-0125 <Icon icon="ep:setting" /></el-button>
+        <el-button>
+          <Icon icon="ep:user" />
+        </el-button>
+        <el-button>
+          <Icon icon="ep:download" />
+        </el-button>
+        <el-button>
+          <Icon icon="ep:arrow-up" />
+        </el-button>
+      </el-header>
+      <el-main>对话列表</el-main>
+      <el-footer>发送消息框</el-footer>
+    </el-container>
+  </el-container>
+</template>
+<script setup lang="ts">
+const conversationList = [
+  {
+    id: 1,
+    title: '测试标题',
+    avatar:
+      'http://test.yudao.iocoder.cn/96c787a2ce88bf6d0ce3cd8b6cf5314e80e7703cd41bf4af8cd2e2909dbd6b6d.png'
+  },
+  {
+    id: 2,
+    title: '测试对话',
+    avatar:
+      'http://test.yudao.iocoder.cn/96c787a2ce88bf6d0ce3cd8b6cf5314e80e7703cd41bf4af8cd2e2909dbd6b6d.png'
+  }
+]
+const conversationId = ref(1)
+const searchName = ref('')
+const leftHeight = window.innerHeight - 240 // TODO 芋艿：这里还不太对
+
+const changeConversation = (conversation) => {
+  console.log(conversation)
+  conversationId.value = conversation.id
+  // TODO 芋艿：待实现
+}
+
+const updateConversationTitle = (conversation) => {
+  console.log(conversation)
+  // TODO 芋艿：待实现
+}
+
+const deleteConversationTitle = (conversation) => {
+  console.log(conversation)
+  // TODO 芋艿：待实现
+}
+
+const searchConversation = () => {
+  // TODO 芋艿：待实现
+}
+</script>
+<style lang="scss" scoped>
+.conversation-container {
+  .conversation-list {
+    .conversation {
+      display: flex;
+      justify-content: flex-start;
+      width: 100%;
+      padding: 5px 5px 0 0;
+      cursor: pointer;
+      &.active {
+        // TODO 芋艿：这里不太对
+        background-color: #343540;
+        .button {
+          display: inline;
+        }
+      }
+      .title {
+        padding: 5px 10px;
+        max-width: 220px;
+        font-size: 14px;
+        overflow: hidden;
+        white-space: nowrap;
+        text-overflow: ellipsis;
+      }
+      .avatar {
+        width: 28px;
+        height: 28px;
+        border-radius: 50%;
+      }
+      .button {
+        position: absolute;
+        right: 2px;
+        top: 16px;
+        .el-icon {
+          margin-right: 5px;
+        }
+      }
+    }
+
+    .tool-box {
+      display: flex;
+      justify-content: flex-start;
+      padding: 0 20px 10px 20px;
+      border-top: 1px solid black;
+    }
+  }
+}
+
+.detail-container {
+  .header {
+    width: 100%;
+    height: 30px;
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+    justify-content: center;
+    padding-top: 10px;
+  }
+}
+</style>