feat: 更新上传接口，使用新的上传表单结构并添加价格字段

backend/app/services/creator.go

@@ -122,6 +122,19 @@ func (s *creator) ListContents(
 		return nil, errorx.ErrDatabaseError.WithCause(err)
 	}
 
+	// Fetch Prices
+	ids := make([]int64, len(list))
+	for i, item := range list {
+		ids[i] = item.ID
+	}
+	priceMap := make(map[int64]float64)
+	if len(ids) > 0 {
+		prices, _ := models.ContentPriceQuery.WithContext(ctx).Where(models.ContentPriceQuery.ContentID.In(ids...)).Find()
+		for _, p := range prices {
+			priceMap[p.ContentID] = float64(p.PriceAmount) / 100.0
+		}
+	}
+
 	var data []creator_dto.CreatorContentItem
 	for _, item := range list {
 		data = append(data, creator_dto.CreatorContentItem{
@@ -129,6 +142,7 @@ func (s *creator) ListContents(
 			Title:       item.Title,
 			Genre:       item.Genre,
 			Key:         item.Key,
+			Price:       priceMap[item.ID],
 			Views:       int(item.Views),
 			Likes:       int(item.Likes),
 			IsPurchased: false,