improvement(wrapped-ui): 封面接入卡片预览并按主题展示

- WrappedHero 新增卡片预览区，按 GameBoy/Modern 主题切换不同预览动效
- 基于 cardManifests 动态映射标题与提问文案，并补充 fallback 逻辑
- wrapped 首页透传 report cards，确保封面预览与报告内容一致

frontend/pages/wrapped/index.vue

@@ -87,7 +87,12 @@
       <!-- Cover -->
       <section class="w-full" :style="slideStyle">
         <div class="h-full w-full relative">
-          <WrappedHero :year="year" variant="slide" class="h-full w-full" />
+          <WrappedHero
+            :year="year"
+            :card-manifests="report?.cards || []"
+            variant="slide"
+            class="h-full w-full"
+          />
         </div>
       </section>