feat(mini-program): 添加 Markdown 渲染组件支持回溯过去页面

- 创建 Markdown.vue 组件，解析并渲染 Markdown 格式内容
- 支持分割线 (---)、四级标题 (####)、列表项 (*-)、段落
- 更新 RecordView.vue 使用 Markdown 组件渲染事件内容和 AI 回复
- 样式采用紫色主题，与整体设计保持一致

解决 issues: 小程序回溯过去页面的 Markdown 内容以纯文本显示的问题

mini-program/src/components/Markdown.vue

@@ -0,0 +1,134 @@
+<template>
+  <view class="markdown-container">
+    <view v-for="(block, index) in parsedBlocks" :key="index" :class="block.type">
+      <!-- 分割线 -->
+      <view v-if="block.type === 'hr'" class="markdown-hr"></view>
+
+      <!-- 标题 -->
+      <text v-else-if="block.type === 'h4'" class="markdown-h4">{{ block.content }}</text>
+
+      <!-- 列表项 -->
+      <view v-else-if="block.type === 'li'" class="markdown-li">
+        <text class="li-bullet">• </text>
+        <text class="li-content">{{ block.content }}</text>
+      </view>
+
+      <!-- 普通段落 -->
+      <text v-else class="markdown-p">{{ block.content }}</text>
+    </view>
+  </view>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+
+const props = defineProps({
+  content: {
+    type: String,
+    default: ''
+  }
+})
+
+// 解析 Markdown 内容
+const parsedBlocks = computed(() => {
+  if (!props.content) return []
+
+  const lines = props.content.split('\n')
+  const blocks = []
+
+  for (const line of lines) {
+    const trimmed = line.trim()
+
+    // 跳过空行
+    if (trimmed === '') continue
+
+    // 分割线
+    if (trimmed === '---' || trimmed === '***' || trimmed === '___') {
+      blocks.push({ type: 'hr', content: '' })
+      continue
+    }
+
+    // 四级标题 ####
+    const h4Match = trimmed.match(/^####\s+(.+)/)
+    if (h4Match) {
+      blocks.push({ type: 'h4', content: h4Match[1] })
+      continue
+    }
+
+    // 列表项 * 或 -
+    const liMatch = trimmed.match(/^[*\-]\s+(.+)/)
+    if (liMatch) {
+      blocks.push({ type: 'li', content: liMatch[1] })
+      continue
+    }
+
+    // 普通段落
+    blocks.push({ type: 'p', content: trimmed })
+  }
+
+  return blocks
+})
+</script>
+
+<style scoped>
+.markdown-container {
+  display: flex;
+  flex-direction: column;
+  gap: 16rpx;
+}
+
+/* 分割线 */
+.markdown-hr {
+  height: 2rpx;
+  background: linear-gradient(to right,
+    rgba(168, 85, 247, 0.1) 0%,
+    rgba(168, 85, 247, 0.4) 50%,
+    rgba(168, 85, 247, 0.1) 100%
+  );
+  margin: 24rpx 0;
+  border-radius: 2rpx;
+}
+
+/* 标题 */
+.markdown-h4 {
+  display: block;
+  font-size: 28rpx;
+  font-weight: 600;
+  color: rgba(243, 232, 255, 0.95);
+  margin: 16rpx 0 8rpx 0;
+  line-height: 1.4;
+}
+
+/* 列表项 */
+.markdown-li {
+  display: flex;
+  flex-direction: row;
+  align-items: flex-start;
+  gap: 12rpx;
+  padding: 8rpx 0;
+}
+
+.li-bullet {
+  color: #C084FC;
+  font-size: 24rpx;
+  line-height: 1.5;
+  flex-shrink: 0;
+}
+
+.li-content {
+  flex: 1;
+  color: rgba(243, 232, 255, 0.8);
+  font-size: 24rpx;
+  line-height: 1.6;
+  word-break: break-all;
+}
+
+/* 普通段落 */
+.markdown-p {
+  display: block;
+  color: rgba(243, 232, 255, 0.75);
+  font-size: 24rpx;
+  line-height: 1.6;
+  word-break: break-all;
+}
+</style>

mini-program/src/pages/main/RecordView.vue

@@ -42,16 +42,16 @@
           <text class="event-date">{{ event.time }}</text>
         </view>
         
-        <text class="event-content">{{ event.content }}</text>
+        <view class="event-body">
-        
+          <Markdown class="event-content" :content="event.content" />
+        </view>
+
         <view class="ai-reply">
           <view class="ai-header">
             <text class="ai-icon">✨</text>
             <text class="ai-title">Life Harmony AI</text>
           </view>
-          <text class="ai-content" :class="{ typing: event.isNew }">
+          <Markdown class="ai-content" :content="event.aiFeedback" />
-            {{ event.aiFeedback }}
-          </text>
         </view>
       </view>
     </view>
@@ -61,6 +61,7 @@
 <script setup>
 import { ref, computed, onMounted } from 'vue'
 import { useAppStore } from '../../stores/app.js'
+import Markdown from '../../components/Markdown.vue'
 
 const store = useAppStore()
 
@@ -121,6 +122,7 @@ onMounted(() => {
   flex-direction: column;
   gap: 32rpx;
   min-height: 100%;
+  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 }
 
 /* ==================== 输入卡片 - 金色玻璃态 ==================== */
@@ -285,12 +287,14 @@ onMounted(() => {
   white-space: nowrap;
 }
 
+.event-body {
+  margin-bottom: 16rpx;
+}
+
 .event-content {
-  display: block;
   font-size: 26rpx;
   color: rgba(255, 255, 255, 0.7);
   line-height: 1.6;
-  margin-bottom: 24rpx;
 }
 
 /* ==================== AI 回复区域 - 金色玻璃态核心特征 ==================== */
@@ -336,39 +340,6 @@ onMounted(() => {
 
 .ai-content {
   font-size: 24rpx;
-  color: rgba(243, 232, 255, 0.8);
-  font-style: italic;
   line-height: 1.5;
-  overflow: hidden;
-  white-space: pre-wrap;
-}
-
-/* 打字机动画 - 原型标准 */
-.ai-content.typing {
-  animation: typing-reveal 2.5s steps(60, end);
-}
-
-@keyframes typing-reveal {
-  from {
-    opacity: 0;
-    transform: translateY(8rpx);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
-/* 光标闪烁效果（增强打字机感） */
-.ai-content.typing::after {
-  content: '|';
-  animation: cursor-blink 0.8s steps(2) infinite;
-  color: rgba(192, 132, 252, 0.6);
-  margin-left: 4rpx;
-}
-
-@keyframes cursor-blink {
-  0%, 50% { opacity: 1; }
-  51%, 100% { opacity: 0; }
 }
 </style>