修复卖家商品价格展示

backend/internal/modules/listing/repository.go

@@ -378,7 +378,7 @@ func (r *Repository) ListMine(ownerID uint64) ([]ListingDTO, error) {
 	if err != nil {
 		return nil, err
 	}
-	return rowsToDTO(rows), nil
+	return sellerListings(rowsToDTO(rows)), nil
 }
 
 func (r *Repository) FindPublic(id uint64) (*ListingDTO, error) {
@@ -412,7 +412,12 @@ func (r *Repository) FindPublicScreenshotKey(id uint64, index int) (string, erro
 }
 
 func (r *Repository) FindMine(ownerID uint64, id uint64) (*ListingDTO, error) {
-	return r.findDTO("l.id = ? AND l.owner_id = ?", id, ownerID)
+	dto, err := r.findDTO("l.id = ? AND l.owner_id = ?", id, ownerID)
+	if err != nil {
+		return nil, err
+	}
+	applySellerListingPrice(dto)
+	return dto, nil
 }
 
 func (r *Repository) findOwnedForUpdate(tx *gorm.DB, ownerID uint64, listingID uint64) (*model.RentalListing, *model.GameAccount, error) {
@@ -493,6 +498,13 @@ func publicListings(items []ListingDTO) []ListingDTO {
 	return items
 }
 
+func sellerListings(items []ListingDTO) []ListingDTO {
+	for index := range items {
+		applySellerListingPrice(&items[index])
+	}
+	return items
+}
+
 func applyPublicListingURLs(item *ListingDTO) {
 	item.ScreenshotURLS = publicScreenshotURLs(item.ID, item.ScreenshotURLS, item.Status, item.ReviewStatus)
 	if item.AssetSummary != nil {
@@ -500,6 +512,20 @@ func applyPublicListingURLs(item *ListingDTO) {
 	}
 }
 
+func applySellerListingPrice(item *ListingDTO) {
+	if item == nil || item.AssetSummary == nil {
+		return
+	}
+	breakdown, ok := item.AssetSummary["price_breakdown"].(map[string]any)
+	if !ok {
+		return
+	}
+	sellerPrice := readSummaryNumber(breakdown["seller_total_price"])
+	if sellerPrice > 0 {
+		item.Price = sellerPrice
+	}
+}
+
 func (row listingRow) toDTO() ListingDTO {
 	assetSummary := decodeAssetSummary(row.AssetSummary)
 	screenshotURLS := cleanScreenshotURLs(decodeScreenshots(row.ScreenshotURLS))

backend/internal/modules/listing/service_test.go

@@ -40,3 +40,37 @@ func TestValidateRequestRequiresDepositAboveConsumables(t *testing.T) {
 		t.Fatalf("expected valid request, got %v", err)
 	}
 }
+
+func TestApplySellerListingPriceUsesSellerTotalPrice(t *testing.T) {
+	item := &ListingDTO{
+		Price: 238,
+		AssetSummary: map[string]any{
+			"price_breakdown": map[string]any{
+				"seller_total_price": 200,
+			},
+		},
+	}
+
+	applySellerListingPrice(item)
+
+	if item.Price != 200 {
+		t.Fatalf("expected seller price 200, got %.2f", item.Price)
+	}
+}
+
+func TestApplySellerListingPriceKeepsFallbackPrice(t *testing.T) {
+	item := &ListingDTO{
+		Price: 238,
+		AssetSummary: map[string]any{
+			"price_breakdown": map[string]any{
+				"seller_total_price": 0,
+			},
+		},
+	}
+
+	applySellerListingPrice(item)
+
+	if item.Price != 238 {
+		t.Fatalf("expected fallback price 238, got %.2f", item.Price)
+	}
+}