feat(拼图游戏): 实现零件拖拽与进度显示功能

- 实现拖拽交互逻辑，支持零件从托盘拖拽到中心区域
- 添加拼图进度显示，根据已放置零件数量更新进度条
- 完成拼图后显示完成弹窗
- 优化界面布局和样式，适配不同尺寸的拼图零件

src/pages/second/part2.vue

@@ -63,6 +63,21 @@ const currentProgressImg = computed(() => {
   return PROGRESS_MAP[placedCount.value] || ASSETS.zzjd1;
 });
 
+const currentProgressImgStyle = computed(() => {
+  const currentImg = PROGRESS_MAP[placedCount.value] || ASSETS.zzjd1;
+  
+  if (currentImg === ASSETS.zzjd6) {
+    return { width: '94rpx', height: '580rpx' };
+  }
+  
+  if (currentImg === ASSETS.zzjd) {
+    return { width: '70rpx', height: '554rpx' };
+  }
+  
+  // 默认尺寸
+  return { width: '94rpx', height: '548rpx' };
+});
+
 const showCompletion = ref(false);
 
 const handleReset = () => {
@@ -182,7 +197,7 @@ const getGhostIcon = () => {
     <!-- 右侧进度条 -->
     <view class="progress-wrapper">
       <text class="progress-title">组装进度</text>
-      <image class="progress-img" :src="currentProgressImg" mode="scaleToFill" />
+      <image class="progress-img" :src="currentProgressImg" :style="currentProgressImgStyle" mode="scaleToFill" />
     </view>
 
     <!-- 下方托盘区域 -->