feat(circle): 添加酒友圈社交模块

- 新增酒友圈、圈子详情、发布动态、好友列表、活动创建等页面配置
- 添加酒友圈相关API接口，包括动态、评论、好友、活动等功能
- 实现模拟数据用于前端开发和测试
- 创建评论项、空状态、活动卡片、动态卡片、好友项等组件
- 编写酒友圈模块详细的接口文档，定义数据结构和业务规则

components/CommentItem.vue

@@ -0,0 +1,90 @@
+<template>
+  <view class="comment-item">
+    <view class="comment-avatar-wrap">
+      <image v-if="comment.avatar" class="comment-avatar" :src="comment.avatar" mode="aspectFill"></image>
+      <view v-else class="comment-avatar comment-avatar-ph">
+        <text class="comment-avatar-text">{{ comment.nickname ? comment.nickname[0] : '酒' }}</text>
+      </view>
+    </view>
+    <view class="comment-body">
+      <view class="comment-top">
+        <text class="comment-name">{{ comment.nickname }}</text>
+        <text class="comment-time">{{ comment.time }}</text>
+      </view>
+      <text class="comment-content">{{ comment.content }}</text>
+    </view>
+  </view>
+</template>
+
+<script>
+export default {
+  name: 'CommentItem',
+  props: {
+    comment: { type: Object, default: () => ({}) }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.comment-item {
+  display: flex;
+  gap: $sp-md;
+  padding: $sp-lg 0;
+
+  &:not(:last-child) {
+    border-bottom: 1rpx solid var(--divider-color, rgba(255,255,255,0.08));
+  }
+}
+
+.comment-avatar-wrap {
+  flex-shrink: 0;
+}
+
+.comment-avatar {
+  width: 64rpx;
+  height: 64rpx;
+  border-radius: 50%;
+}
+
+.comment-avatar-ph {
+  background: $bg-elevated;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.comment-avatar-text {
+  font-size: $fs-sm;
+  font-weight: $fw-bold;
+  color: $lavender;
+}
+
+.comment-body {
+  flex: 1;
+  min-width: 0;
+}
+
+.comment-top {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 8rpx;
+}
+
+.comment-name {
+  font-size: $fs-sm;
+  font-weight: $fw-bold;
+  color: $text-secondary;
+}
+
+.comment-time {
+  font-size: $fs-xs;
+  color: $text-tertiary;
+}
+
+.comment-content {
+  font-size: $fs-base;
+  color: $text-primary;
+  line-height: $lh-normal;
+}
+</style>