refactor: 项目架构重构 - 目录标准化 + 清理冗余

- 目录重命名: backend/wdkj-server/ → server/, frontend/ai-dimension/ → client/
- 删除 20+ 冗余文件（WDKJ 旧脚本、Windows 脚本、过时文档、设计稿）
- 更新 package.json 元数据（移除 wdkj 命名）
- 完善三级 .gitignore（根 + server + client）
- 重写 README.md 和 CHANGELOG.md
- 工具脚本移至 scripts/

client/src/components/DimCard.vue

@@ -0,0 +1,67 @@
+<template>
+  <view
+    class="dim-card-comp"
+    :class="{ 'dim-full': dim.isFull }"
+    :style="{ background: dim.bg }"
+    @tap="$emit('tap', dim)"
+  >
+    <view class="dim-icon" :style="{ background: dim.iconBg, color: dim.color }">
+      <text>{{ dim.icon }}</text>
+    </view>
+    <text class="dim-name" :style="{ color: dim.color }">{{ dim.name }}</text>
+    <text class="dim-desc">{{ dim.desc }}</text>
+    <text class="dim-count">
+      {{ dim.isFull ? '今日已更新 8 条' : `${dim.articleCount} 篇 · ${dim.quizCount} 个问答` }}
+    </text>
+  </view>
+</template>
+
+<script setup>
+defineProps({
+  dim: { type: Object, required: true }
+})
+defineEmits(['tap'])
+</script>
+
+<style lang="scss" scoped>
+.dim-card-comp {
+  border-radius: 18px;
+  padding: 20px 16px;
+  border: 1px solid rgba(255,255,255,0.06);
+  backdrop-filter: blur(10px);
+  -webkit-backdrop-filter: blur(10px);
+}
+.dim-full {
+  grid-column: 1 / -1;
+}
+
+.dim-icon {
+  width: 42px; height: 42px;
+  border-radius: 12px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 20px;
+  margin-bottom: 14px;
+}
+
+.dim-name {
+  font-size: 15px;
+  font-weight: 600;
+  margin-bottom: 4px;
+  letter-spacing: 0.5px;
+  display: block;
+}
+.dim-desc {
+  font-size: 11px;
+  color: rgba(255,255,255,0.3);
+  line-height: 1.5;
+  display: block;
+}
+.dim-count {
+  font-size: 10px;
+  color: rgba(255,255,255,0.15);
+  margin-top: 10px;
+  display: block;
+}
+</style>

client/src/components/NewsCard.vue

@@ -0,0 +1,60 @@
+<template>
+  <view
+    class="news-card-comp"
+    @tap="$emit('tap', item)"
+  >
+    <view class="news-tag" :class="item.tagClass">{{ item.tag }}</view>
+    <text class="news-title">{{ item.title }}</text>
+    <view class="news-meta">
+      <text>{{ item.source }}</text>
+      <text>{{ item.time }}</text>
+    </view>
+  </view>
+</template>
+
+<script setup>
+defineProps({
+  item: { type: Object, required: true }
+})
+defineEmits(['tap'])
+</script>
+
+<style lang="scss" scoped>
+.news-card-comp {
+  border-radius: 14px;
+  padding: 14px 16px;
+  margin-bottom: 10px;
+  background: rgba(255,255,255,0.03);
+  border: 1px solid rgba(255,255,255,0.05);
+  backdrop-filter: blur(10px);
+  -webkit-backdrop-filter: blur(10px);
+}
+
+.news-tag {
+  display: inline-block;
+  font-size: 10px;
+  padding: 2px 10px;
+  border-radius: 6px;
+  margin-bottom: 8px;
+  font-weight: 500;
+}
+.news-tag.hot { background: rgba(239,83,80,0.12); color: #ef5350; }
+.news-tag.new { background: rgba(0,188,212,0.12); color: #4dd0e1; }
+.news-tag.pick { background: rgba(124,77,255,0.12); color: #b388ff; }
+
+.news-title {
+  font-size: 13px;
+  color: rgba(255,255,255,0.85);
+  line-height: 1.5;
+  margin-bottom: 8px;
+  font-weight: 500;
+  display: block;
+}
+
+.news-meta {
+  display: flex;
+  gap: 16px;
+  font-size: 10px;
+  color: rgba(255,255,255,0.2);
+}
+</style>