feat(distribution): 完善分销站与主站业务数据及权益风控隔离，修复历史商品归属

backend/internal/modules/listing/handler_user.go

@@ -103,7 +103,8 @@ func (h *Handler) ListMine(c *gin.Context) {
 		response.Unauthorized(c, "缺少用户上下文")
 		return
 	}
-	items, err := h.service.ListMine(c.Request.Context(), ownerID)
+	siteCode := strings.TrimSpace(c.GetHeader("X-Distribution-Site-Code"))
+	items, err := h.service.ListMine(c.Request.Context(), ownerID, siteCode)
 	if err != nil {
 		writeListingError(c, err)
 		return

backend/internal/modules/listing/query.go

@@ -170,12 +170,18 @@ func (r *Repository) FindAdmin(ctx context.Context, listingID uint64) (*ListingD
 	return r.findDTO(ctx, "l.id = ?", listingID)
 }
 
-func (r *Repository) ListMine(ctx context.Context, ownerID uint64) ([]ListingDTO, error) {
+func (r *Repository) ListMine(ctx context.Context, ownerID uint64, siteCode ...string) ([]ListingDTO, error) {
 	var rows []listingRow
-	err := r.baseQuery(ctx).
-		Where("l.owner_id = ?", ownerID).
-		Order("l.id DESC").
-		Scan(&rows).Error
+	base := r.baseQuery(ctx).Where("l.owner_id = ?", ownerID)
+	if len(siteCode) > 0 {
+		code := strings.TrimSpace(siteCode[0])
+		if code != "" {
+			base = base.Joins("INNER JOIN distribution_sites AS my_ds ON my_ds.id = l.distribution_site_id AND my_ds.site_code = ?", code)
+		} else {
+			base = base.Where("l.distribution_site_id IS NULL OR l.distribution_site_id = 0")
+		}
+	}
+	err := base.Order("l.id DESC").Scan(&rows).Error
 	if err != nil {
 		return nil, err
 	}

backend/internal/modules/listing/service_query.go

@@ -11,11 +11,11 @@ func (s *Service) ListPublic(ctx context.Context, query PublicListQuery) (*Publi
 	return s.repo.ListPublic(ctx, query)
 }
 
-func (s *Service) ListMine(ctx context.Context, ownerID uint64) ([]ListingDTO, error) {
+func (s *Service) ListMine(ctx context.Context, ownerID uint64, siteCode ...string) ([]ListingDTO, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	return s.repo.ListMine(ctx, ownerID)
+	return s.repo.ListMine(ctx, ownerID, siteCode...)
 }
 
 func (s *Service) FindPublic(ctx context.Context, id uint64) (*ListingDTO, error) {

backend/internal/modules/listing/service_test.go

@@ -888,3 +888,63 @@ func TestCreateListingWithDistributionSiteCode(t *testing.T) {
 	}
 }
 
+func TestListMineSiteIsolation(t *testing.T) {
+	db := database.NewTestDB()
+	if err := database.MigrateListingLifecycleTestSchema(db); err != nil {
+		t.Fatalf("migrate err: %v", err)
+	}
+	repo := NewRepository(db, nil)
+
+	user := model.User{Phone: "18800000002", Nickname: "多站卖家", RealnameStatus: "verified", Status: "active"}
+	db.Create(&user)
+
+	site := model.DistributionSite{
+		SiteCode:              "dist_x",
+		SiteName:              "分销X",
+		Domain:                "x.com",
+		Status:                "active",
+		DisplayAccountEnabled: true,
+	}
+	db.Create(&site)
+
+	req1 := CreateRequest{Title: "主站商品", ServerRegion: "QQ", LoginPlatform: "PC", PriceCent: 1000}
+	l1, err := repo.Create(context.Background(), user.ID, req1, false, 0)
+	if err != nil {
+		t.Fatalf("Create main failed: %v", err)
+	}
+
+	req2 := CreateRequest{Title: "分销商品", ServerRegion: "QQ", LoginPlatform: "PC", PriceCent: 2000}
+	l2, err := repo.Create(context.Background(), user.ID, req2, false, 0, "dist_x")
+	if err != nil {
+		t.Fatalf("Create dist failed: %v", err)
+	}
+
+	// 1. 分销站查询只返回分销站商品
+	distItems, err := repo.ListMine(context.Background(), user.ID, "dist_x")
+	if err != nil {
+		t.Fatalf("ListMine dist_x err: %v", err)
+	}
+	if len(distItems) != 1 || distItems[0].ID != l2.ID {
+		t.Fatalf("expected only dist listing %d, got %v", l2.ID, distItems)
+	}
+
+	// 2. 主站查询只返回主站商品
+	mainItems, err := repo.ListMine(context.Background(), user.ID, "")
+	if err != nil {
+		t.Fatalf("ListMine main err: %v", err)
+	}
+	if len(mainItems) != 1 || mainItems[0].ID != l1.ID {
+		t.Fatalf("expected only main listing %d, got %v", l1.ID, mainItems)
+	}
+
+	// 3. 不传站点时兼容返回全部
+	allItems, err := repo.ListMine(context.Background(), user.ID)
+	if err != nil {
+		t.Fatalf("ListMine all err: %v", err)
+	}
+	if len(allItems) != 2 {
+		t.Fatalf("expected 2 listings, got %d", len(allItems))
+	}
+}
+
+