refactor(ModelCard): 更新模型卡片样式和图像引用

- 将背景图片引用从 model.image 改为 model.backgroundImage
- 将图标引用从 model.icon 改为

src/views/Home/components/ModelCard.vue

@@ -2,9 +2,9 @@
   <div class="model-item"
        @mouseover="hoverIndex = index"
        @mouseleave="hoverIndex = -1"
-       :style="{ backgroundImage: `url(${model.image})` }">
+       :style="{ backgroundImage: `url(${model.backgroundImage})` }">
     <div class="flex align-items-center">
-      <img :src="model.icon" alt="" style="height: 23px; margin-right: 8px" />
+      <img :src="model.image" alt="" style="height: 23px; margin-right: 8px" />
       <p class="model-item-title">{{ model.title }}</p>
     </div>
     <p class="model-item-desc">{{ model.description }}</p>