feat(distribution): 分销站点消息中心与钱包提现多租户独立分支隔离

- 新增 000070 数据库迁移：支持 chat_conversations、wallet_accounts、wallet_ledger、withdrawal_requests 按 distribution_site_id 隔离
- 消息中心：会话列表、未读数统计、站点专属客服及订单群聊与主站实现双向完全隔离
- 资金账户与提现：独立按 (user_id, distribution_site_id) 建账，分销订单自动结算至对应分站钱包，提现与流水相互独立
- 前台界面：Axios 自动透传 X-Distribution-Site-Code，钱包、提现与消息页面呈现分站专属标牌与独立说明

backend/internal/modules/chat/conversation.go

@@ -3,28 +3,72 @@ package chat
 import (
 	"context"
 	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"hfb_sys/backend/internal/model"
+
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
-	"hfb_sys/backend/internal/model"
-	"time"
 )
 
-func (r *Repository) ListConversations(ctx context.Context, principal Principal, page, pageSize int) (*PaginatedResult, error) {
+func (r *Repository) resolveSite(ctx context.Context, siteCode string) (*model.DistributionSite, error) {
+	siteCode = strings.TrimSpace(siteCode)
+	if siteCode == "" {
+		return nil, nil
+	}
+	var site model.DistributionSite
+	if err := r.db.WithContext(ctx).Where("site_code = ? AND status = 'active'", siteCode).First(&site).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, errors.New("distribution site unavailable")
+		}
+		return nil, err
+	}
+	return &site, nil
+}
+
+func (r *Repository) ListConversations(ctx context.Context, principal Principal, page, pageSize int, siteCode ...string) (*PaginatedResult, error) {
 	page, pageSize = normalizePagination(page, pageSize)
 	db := r.db.WithContext(ctx)
-	var total int64
+
+	var code string
+	if len(siteCode) > 0 {
+		code = siteCode[0]
+	}
+	site, err := r.resolveSite(ctx, code)
+	if err != nil {
+		return nil, err
+	}
+
 	countDB := db.Table("chat_conversations AS c").
 		Joins("JOIN chat_participants AS cp ON cp.conversation_id = c.id").
 		Where("cp.participant_type = ? AND cp.participant_id = ?", principal.Type, principal.ID).
 		Where("c.status = ?", "active")
+
+	dataQuery := r.conversationQuery(ctx, principal).
+		Where("c.status = ?", "active")
+
+	if principal.Type == "user" {
+		if site != nil {
+			siteFilter := "(c.distribution_site_id = ? OR (c.order_id IS NOT NULL AND c.order_id IN (SELECT ro.id FROM rental_orders ro WHERE ro.distribution_site_id = ?)))"
+			countDB = countDB.Where(siteFilter, site.ID, site.ID)
+			dataQuery = dataQuery.Where(siteFilter, site.ID, site.ID)
+		} else {
+			mainFilter := "(c.distribution_site_id IS NULL OR c.distribution_site_id = 0) AND (c.order_id IS NULL OR c.order_id NOT IN (SELECT ro.id FROM rental_orders ro WHERE ro.distribution_site_id IS NOT NULL AND ro.distribution_site_id > 0))"
+			countDB = countDB.Where(mainFilter)
+			dataQuery = dataQuery.Where(mainFilter)
+		}
+	}
+
+	var total int64
 	if err := countDB.Count(&total).Error; err != nil {
 		return nil, err
 	}
 
 	var rows []conversationRow
 	offset := (page - 1) * pageSize
-	err := r.conversationQuery(ctx, principal).
-		Where("c.status = ?", "active").
+	err = dataQuery.
 		Order("COALESCE(c.last_message_at, c.created_at) DESC, c.id DESC").
 		Offset(offset).
 		Limit(pageSize).
@@ -38,6 +82,7 @@ func (r *Repository) ListConversations(ctx context.Context, principal Principal,
 	}
 	return &PaginatedResult{Items: items, Total: total, Page: page, PageSize: pageSize}, nil
 }
+
 func (r *Repository) FindConversation(ctx context.Context, principal Principal, id uint64) (*ConversationDTO, error) {
 	db := r.db.WithContext(ctx)
 	// 管理员可以查看任意会话，无需是 participant
@@ -69,6 +114,7 @@ func (r *Repository) FindConversation(ctx context.Context, principal Principal,
 			ID:                 conversation.ID,
 			OrderID:            conversation.OrderID,
 			ListingID:          conversation.ListingID,
+			DistributionSiteID: conversation.DistributionSiteID,
 			Type:               conversation.Type,
 			SupportScene:       conversation.SupportScene,
 			Title:              conversation.Title,
@@ -102,6 +148,7 @@ func (r *Repository) FindConversation(ctx context.Context, principal Principal,
 	dto := row.toDTO(participants)
 	return &dto, nil
 }
+
 func (r *Repository) FindOrderConversation(ctx context.Context, userID uint64, orderID uint64) (*ConversationDTO, error) {
 	principal := Principal{Type: "user", ID: userID}
 	var order model.RentalOrder
@@ -112,6 +159,22 @@ func (r *Repository) FindOrderConversation(ctx context.Context, userID uint64, o
 		return nil, err
 	}
 
+	if order.DistributionSiteID != nil && *order.DistributionSiteID > 0 {
+		var row conversationRow
+		err := r.conversationQuery(ctx, principal).Where("c.order_id = ?", orderID).First(&row).Error
+		if err == nil {
+			participants, err := r.participants(ctx, row.ID)
+			if err != nil {
+				return nil, err
+			}
+			dto := row.toDTO(participants)
+			return &dto, nil
+		}
+		if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, err
+		}
+	}
+
 	if order.ListingID > 0 {
 		var row conversationRow
 		err := r.conversationQuery(ctx, principal).
@@ -145,31 +208,52 @@ func (r *Repository) FindOrderConversation(ctx context.Context, userID uint64, o
 	dto := row.toDTO(participants)
 	return &dto, nil
 }
-func (r *Repository) EnsureSupportConversation(ctx context.Context, userID uint64, scene string) (*ConversationDTO, error) {
+
+func (r *Repository) EnsureSupportConversation(ctx context.Context, userID uint64, scene string, siteCode ...string) (*ConversationDTO, error) {
+	var code string
+	if len(siteCode) > 0 {
+		code = siteCode[0]
+	}
+	site, err := r.resolveSite(ctx, code)
+	if err != nil {
+		return nil, err
+	}
+
 	scene, title, groupCode, welcome := resolveSupportScene(scene)
+	if site != nil {
+		title = fmt.Sprintf("【%s】%s", site.SiteName, title)
+		welcome = fmt.Sprintf("您好，欢迎咨询【%s】在线客服！请直接描述您遇到的问题，客服会尽快回复。", site.SiteName)
+	}
+
 	var conversationID uint64
-	err := r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+	err = r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
 		var existing model.ChatConversation
-		err := tx.Table("chat_conversations AS c").
+		existingQuery := tx.Table("chat_conversations AS c").
 			Select("c.*").
 			Joins("JOIN chat_participants AS cp ON cp.conversation_id = c.id").
 			Where(
 				"c.type = ? AND c.support_scene = ? AND cp.participant_type = ? AND cp.participant_id = ?",
 				ConversationTypeGeneralSupport, scene, "user", userID,
-			).
-			Order("c.id ASC").
-			Limit(1).
-			Find(&existing).Error
+			)
+
+		if site != nil {
+			existingQuery = existingQuery.Where("c.distribution_site_id = ?", site.ID)
+		} else {
+			existingQuery = existingQuery.Where("c.distribution_site_id IS NULL OR c.distribution_site_id = 0")
+		}
+
+		err := existingQuery.Order("c.id ASC").Limit(1).Find(&existing).Error
 		if err != nil {
 			return err
 		}
-		// 兼容旧数据：scene=general 时也匹配未回填 support_scene 的历史会话
-		if existing.ID == 0 && scene == SupportSceneGeneral {
+
+		// 兼容旧数据：主站 scene=general 时也匹配未回填 support_scene 的历史会话
+		if site == nil && existing.ID == 0 && scene == SupportSceneGeneral {
 			err = tx.Table("chat_conversations AS c").
 				Select("c.*").
 				Joins("JOIN chat_participants AS cp ON cp.conversation_id = c.id").
 				Where(
-					"c.type = ? AND (c.support_scene = '' OR c.support_scene IS NULL) AND cp.participant_type = ? AND cp.participant_id = ?",
+					"c.type = ? AND (c.support_scene = '' OR c.support_scene IS NULL) AND cp.participant_type = ? AND cp.participant_id = ? AND (c.distribution_site_id IS NULL OR c.distribution_site_id = 0)",
 					ConversationTypeGeneralSupport, "user", userID,
 				).
 				Order("c.id ASC").
@@ -183,12 +267,12 @@ func (r *Repository) EnsureSupportConversation(ctx context.Context, userID uint6
 			}
 		}
 		// 兼容旧摸大红场景码 mohong → crash
-		if existing.ID == 0 && scene == SupportSceneCrash {
+		if site == nil && existing.ID == 0 && scene == SupportSceneCrash {
 			err = tx.Table("chat_conversations AS c").
 				Select("c.*").
 				Joins("JOIN chat_participants AS cp ON cp.conversation_id = c.id").
 				Where(
-					"c.type = ? AND c.support_scene = ? AND cp.participant_type = ? AND cp.participant_id = ?",
+					"c.type = ? AND c.support_scene = ? AND cp.participant_type = ? AND cp.participant_id = ? AND (c.distribution_site_id IS NULL OR c.distribution_site_id = 0)",
 					ConversationTypeGeneralSupport, SupportSceneMohong, "user", userID,
 				).
 				Order("c.id ASC").
@@ -210,6 +294,9 @@ func (r *Repository) EnsureSupportConversation(ctx context.Context, userID uint6
 			Title:        title,
 			Status:       "active",
 		}
+		if site != nil {
+			conversation.DistributionSiteID = &site.ID
+		}
 		if err := tx.Create(&conversation).Error; err != nil {
 			return err
 		}
@@ -223,7 +310,19 @@ func (r *Repository) EnsureSupportConversation(ctx context.Context, userID uint6
 				JoinedAt:        now,
 			},
 		}
-		if supportID := pickSupportAdminForScene(tx, groupCode); supportID > 0 {
+
+		var supportID uint64
+		if site != nil && site.DefaultSupportGroupID != nil && *site.DefaultSupportGroupID > 0 {
+			var member model.ChatSupportGroupMember
+			if err := tx.Where("group_id = ?", *site.DefaultSupportGroupID).Order("id ASC").First(&member).Error; err == nil && member.AdminID > 0 {
+				supportID = member.AdminID
+			}
+		}
+		if supportID == 0 {
+			supportID = pickSupportAdminForScene(tx, groupCode)
+		}
+
+		if supportID > 0 {
 			participants = append(participants, model.ChatParticipant{
 				ConversationID:  conversation.ID,
 				ParticipantType: "admin",

backend/internal/modules/chat/conversation_test.go

@@ -26,6 +26,7 @@ func setupConversationTestDB(t *testing.T) *gorm.DB {
 		&model.ChatParticipant{},
 		&model.ChatAdminConversationState{},
 		&model.ChatMessage{},
+		&model.DistributionSite{},
 	); err != nil {
 		t.Fatalf("数据库迁移失败: %v", err)
 	}
@@ -151,3 +152,127 @@ func TestFindOrderConversationFallsBackToOrderGroup(t *testing.T) {
 		t.Fatalf("会话类型 = %q, want %q", dto.Type, ConversationTypeOrderGroup)
 	}
 }
+
+func TestChatTenantIsolation(t *testing.T) {
+	db := setupConversationTestDB(t)
+	repo := NewRepository(db, nil, nil)
+	now := time.Now()
+
+	user := model.User{Phone: "13900002001", Nickname: "分销用户"}
+	if err := db.Create(&user).Error; err != nil {
+		t.Fatalf("创建用户失败: %v", err)
+	}
+
+	site := model.DistributionSite{
+		ID:       20,
+		SiteCode: "site_beta",
+		SiteName: "贝塔分销",
+		Domain:   "beta.hfb.com",
+		Status:   "active",
+	}
+	if err := db.Create(&site).Error; err != nil {
+		t.Fatalf("创建分销站点失败: %v", err)
+	}
+
+	// 1. 创建主站客服会话
+	mainConv := model.ChatConversation{
+		Type:         ConversationTypeGeneralSupport,
+		SupportScene: SupportSceneGeneral,
+		Title:        "主站客服",
+		Status:       "active",
+	}
+	if err := db.Create(&mainConv).Error; err != nil {
+		t.Fatalf("创建主站客服会话失败: %v", err)
+	}
+	if err := db.Create(&model.ChatParticipant{
+		ConversationID:  mainConv.ID,
+		ParticipantType: "user",
+		ParticipantID:   user.ID,
+		Role:            "customer",
+		JoinedAt:        now,
+	}).Error; err != nil {
+		t.Fatalf("添加主站会话成员失败: %v", err)
+	}
+
+	// 2. 创建分销站客服会话
+	siteConv := model.ChatConversation{
+		DistributionSiteID: &site.ID,
+		Type:               ConversationTypeGeneralSupport,
+		SupportScene:       SupportSceneGeneral,
+		Title:              "【贝塔分销】平台客服",
+		Status:             "active",
+	}
+	if err := db.Create(&siteConv).Error; err != nil {
+		t.Fatalf("创建分站客服会话失败: %v", err)
+	}
+	if err := db.Create(&model.ChatParticipant{
+		ConversationID:  siteConv.ID,
+		ParticipantType: "user",
+		ParticipantID:   user.ID,
+		Role:            "customer",
+		JoinedAt:        now,
+	}).Error; err != nil {
+		t.Fatalf("添加分站会话成员失败: %v", err)
+	}
+
+	principal := Principal{Type: "user", ID: user.ID}
+
+	// 3. 校验主站查询会话列表：严格只看到主站会话
+	mainList, err := repo.ListConversations(t.Context(), principal, 1, 20)
+	if err != nil {
+		t.Fatalf("查询主站会话列表失败: %v", err)
+	}
+	if mainList.Total != 1 {
+		t.Fatalf("主站会话数量 = %d, want 1", mainList.Total)
+	}
+	mainItems := mainList.Items.([]ConversationDTO)
+	if mainItems[0].ID != mainConv.ID {
+		t.Fatalf("主站会话 ID = %d, want %d", mainItems[0].ID, mainConv.ID)
+	}
+	if mainItems[0].DistributionSiteID != nil {
+		t.Fatalf("主站会话 DistributionSiteID = %v, want nil", mainItems[0].DistributionSiteID)
+	}
+
+	// 4. 校验分站查询会话列表：严格只看到分站会话
+	siteList, err := repo.ListConversations(t.Context(), principal, 1, 20, site.SiteCode)
+	if err != nil {
+		t.Fatalf("查询分站会话列表失败: %v", err)
+	}
+	if siteList.Total != 1 {
+		t.Fatalf("分站会话数量 = %d, want 1", siteList.Total)
+	}
+	siteItems := siteList.Items.([]ConversationDTO)
+	if siteItems[0].ID != siteConv.ID {
+		t.Fatalf("分站会话 ID = %d, want %d", siteItems[0].ID, siteConv.ID)
+	}
+	if siteItems[0].DistributionSiteID == nil || *siteItems[0].DistributionSiteID != site.ID {
+		t.Fatalf("分站会话 DistributionSiteID = %v, want %d", siteItems[0].DistributionSiteID, site.ID)
+	}
+
+	// 5. 测试 EnsureSupportConversation 分销站点场景
+	ensuredSiteConv, err := repo.EnsureSupportConversation(t.Context(), user.ID, "crash", site.SiteCode)
+	if err != nil {
+		t.Fatalf("分站创建撞车客服失败: %v", err)
+	}
+	if ensuredSiteConv.DistributionSiteID == nil || *ensuredSiteConv.DistributionSiteID != site.ID {
+		t.Fatalf("新建分站会话 DistributionSiteID = %v, want %d", ensuredSiteConv.DistributionSiteID, site.ID)
+	}
+
+	// 主站再次查询，仍然只有 1 个主站会话
+	mainListAfter, err := repo.ListConversations(t.Context(), principal, 1, 20)
+	if err != nil {
+		t.Fatalf("主站列表查询失败: %v", err)
+	}
+	if mainListAfter.Total != 1 {
+		t.Fatalf("主站会话数量 = %d, want 1 (分站新增会话不应出现在主站)", mainListAfter.Total)
+	}
+
+	// 分站再次查询，有 2 个分站会话
+	siteListAfter, err := repo.ListConversations(t.Context(), principal, 1, 20, site.SiteCode)
+	if err != nil {
+		t.Fatalf("分站列表查询失败: %v", err)
+	}
+	if siteListAfter.Total != 2 {
+		t.Fatalf("分站会话数量 = %d, want 2", siteListAfter.Total)
+	}
+}

backend/internal/modules/chat/dto.go

@@ -11,6 +11,7 @@ type ConversationDTO struct {
 	ID                  uint64           `json:"id"`
 	OrderID             *uint64          `json:"order_id"`
 	ListingID           *uint64          `json:"listing_id"`
+	DistributionSiteID  *uint64          `json:"distribution_site_id,omitempty"`
 	LatestOrderID       *uint64          `json:"latest_order_id,omitempty"`
 	LatestOrderNo       string           `json:"latest_order_no,omitempty"`
 	LatestOrderStatus   string           `json:"latest_order_status,omitempty"`
@@ -38,7 +39,8 @@ type ConversationDTO struct {
 // EnsureSupportRequest 创建/复用客服会话。
 type EnsureSupportRequest struct {
 	// Scene 业务场景：general（默认）/ crash（撞车，兼容旧值 mohong）
-	Scene string `json:"scene"`
+	Scene                string `json:"scene"`
+	DistributionSiteCode string `json:"distribution_site_code"`
 }
 
 type ParticipantDTO struct {

backend/internal/modules/chat/handler_common.go

@@ -1,14 +1,31 @@
 package chat
 
 import (
+	"strings"
+
 	"hfb_sys/backend/pkg/response"
 
 	"github.com/gin-gonic/gin"
 )
 
+func parseSiteCode(c *gin.Context) string {
+	for _, val := range []string{
+		c.Query("distribution_site_code"),
+		c.Query("site_code"),
+		c.GetHeader("X-Distribution-Site-Code"),
+		c.GetHeader("X-Site-Code"),
+	} {
+		if trimmed := strings.TrimSpace(val); trimmed != "" {
+			return trimmed
+		}
+	}
+	return ""
+}
+
 func (h *Handler) list(c *gin.Context, principal Principal) {
 	page, pageSize := parsePagination(c)
-	result, err := h.service.ListConversations(c.Request.Context(), principal, page, pageSize)
+	siteCode := parseSiteCode(c)
+	result, err := h.service.ListConversations(c.Request.Context(), principal, page, pageSize, siteCode)
 	if err != nil {
 		writeChatError(c, err)
 		return

backend/internal/modules/chat/handler_user.go

@@ -21,7 +21,8 @@ func (h *Handler) UnreadCount(c *gin.Context) {
 		response.Unauthorized(c, "缺少用户上下文")
 		return
 	}
-	result, err := h.service.CountUnreadMessages(c.Request.Context(), Principal{Type: "user", ID: userID})
+	siteCode := parseSiteCode(c)
+	result, err := h.service.CountUnreadMessages(c.Request.Context(), Principal{Type: "user", ID: userID}, siteCode)
 	if err != nil {
 		writeChatError(c, err)
 		return
@@ -65,7 +66,11 @@ func (h *Handler) EnsureSupportConversation(c *gin.Context) {
 	var req EnsureSupportRequest
 	// scene 可选；空 body 仍按平台客服处理
 	_ = c.ShouldBindJSON(&req)
-	item, err := h.service.EnsureSupportConversation(c.Request.Context(), userID, req.Scene)
+	siteCode := parseSiteCode(c)
+	if siteCode == "" && req.DistributionSiteCode != "" {
+		siteCode = req.DistributionSiteCode
+	}
+	item, err := h.service.EnsureSupportConversation(c.Request.Context(), userID, req.Scene, siteCode)
 	if err != nil {
 		writeChatError(c, err)
 		return

backend/internal/modules/chat/participant.go

@@ -15,6 +15,7 @@ type conversationRow struct {
 	ID                  uint64
 	OrderID             *uint64
 	ListingID           *uint64
+	DistributionSiteID  *uint64
 	LatestOrderID       *uint64
 	LatestOrderNo       string
 	LatestOrderStatus   string
@@ -40,7 +41,7 @@ type conversationRow struct {
 
 func (r *Repository) conversationQuery(ctx context.Context, principal Principal) *gorm.DB {
 	return r.db.WithContext(ctx).Table("chat_conversations AS c").
-		Select(`c.id, c.order_id, c.listing_id, c.type, c.support_scene, c.title, c.status, c.last_message_id,
+		Select(`c.id, c.order_id, c.listing_id, c.distribution_site_id, c.type, c.support_scene, c.title, c.status, c.last_message_id,
 			c.last_message_preview, c.last_message_at, c.created_at, c.updated_at, cp.role,
 			(
 				SELECT COUNT(1)
@@ -54,17 +55,37 @@ func (r *Repository) conversationQuery(ctx context.Context, principal Principal)
 		Where("cp.participant_type = ? AND cp.participant_id = ?", principal.Type, principal.ID)
 }
 
-func (r *Repository) CountUnreadMessages(ctx context.Context, principal Principal) (int64, error) {
-	var total int64
-	err := r.db.WithContext(ctx).Table("chat_messages AS cm").
+func (r *Repository) CountUnreadMessages(ctx context.Context, principal Principal, siteCode ...string) (int64, error) {
+	var code string
+	if len(siteCode) > 0 {
+		code = siteCode[0]
+	}
+	site, err := r.resolveSite(ctx, code)
+	if err != nil {
+		return 0, err
+	}
+
+	query := r.db.WithContext(ctx).Table("chat_messages AS cm").
 		Joins("JOIN chat_participants AS cp ON cp.conversation_id = cm.conversation_id").
 		Joins("JOIN chat_conversations AS c ON c.id = cm.conversation_id").
 		Where("cp.participant_type = ? AND cp.participant_id = ?", principal.Type, principal.ID).
 		Where("c.status = ?", "active").
 		Where("NOT (cm.sender_type = ? AND cm.sender_id = ?)", principal.Type, principal.ID).
 		Where("cm.sender_type <> ?", "system").
-		Where("(cp.last_read_at IS NULL OR cm.created_at > cp.last_read_at)").
-		Count(&total).Error
+		Where("(cp.last_read_at IS NULL OR cm.created_at > cp.last_read_at)")
+
+	if principal.Type == "user" {
+		if site != nil {
+			siteFilter := "(c.distribution_site_id = ? OR (c.order_id IS NOT NULL AND c.order_id IN (SELECT ro.id FROM rental_orders ro WHERE ro.distribution_site_id = ?)))"
+			query = query.Where(siteFilter, site.ID, site.ID)
+		} else {
+			mainFilter := "(c.distribution_site_id IS NULL OR c.distribution_site_id = 0) AND (c.order_id IS NULL OR c.order_id NOT IN (SELECT ro.id FROM rental_orders ro WHERE ro.distribution_site_id IS NOT NULL AND ro.distribution_site_id > 0))"
+			query = query.Where(mainFilter)
+		}
+	}
+
+	var total int64
+	err = query.Count(&total).Error
 	return total, err
 }
 
@@ -315,6 +336,7 @@ func (row conversationRow) toDTO(participants []ParticipantDTO) ConversationDTO
 		ID:                  row.ID,
 		OrderID:             row.OrderID,
 		ListingID:           row.ListingID,
+		DistributionSiteID:  row.DistributionSiteID,
 		LatestOrderID:       row.LatestOrderID,
 		LatestOrderNo:       row.LatestOrderNo,
 		LatestOrderStatus:   row.LatestOrderStatus,

backend/internal/modules/chat/repository.go

@@ -89,10 +89,11 @@ func EnsureOrderConversation(tx *gorm.DB, order model.RentalOrder) (*model.ChatC
 
 	now := time.Now()
 	conversation := model.ChatConversation{
-		OrderID: &order.ID,
-		Type:    "order_group",
-		Title:   orderConversationTitle(order),
-		Status:  "active",
+		OrderID:            &order.ID,
+		DistributionSiteID: order.DistributionSiteID,
+		Type:               "order_group",
+		Title:              orderConversationTitle(order),
+		Status:             "active",
 	}
 	if err := tx.Create(&conversation).Error; err != nil {
 		return nil, err

backend/internal/modules/chat/service.go

@@ -22,18 +22,18 @@ func NewService(repo *Repository) *Service {
 	return &Service{repo: repo}
 }
 
-func (s *Service) ListConversations(ctx context.Context, principal Principal, page, pageSize int) (*PaginatedResult, error) {
+func (s *Service) ListConversations(ctx context.Context, principal Principal, page, pageSize int, siteCode ...string) (*PaginatedResult, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	return s.repo.ListConversations(ctx, principal, page, pageSize)
+	return s.repo.ListConversations(ctx, principal, page, pageSize, siteCode...)
 }
 
-func (s *Service) CountUnreadMessages(ctx context.Context, principal Principal) (*UnreadCountDTO, error) {
+func (s *Service) CountUnreadMessages(ctx context.Context, principal Principal, siteCode ...string) (*UnreadCountDTO, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	total, err := s.repo.CountUnreadMessages(ctx, principal)
+	total, err := s.repo.CountUnreadMessages(ctx, principal, siteCode...)
 	if err != nil {
 		return nil, err
 	}
@@ -54,14 +54,14 @@ func (s *Service) FindOrderConversation(ctx context.Context, userID uint64, orde
 	return s.repo.FindOrderConversation(ctx, userID, orderID)
 }
 
-func (s *Service) EnsureSupportConversation(ctx context.Context, userID uint64, scene string) (*ConversationDTO, error) {
+func (s *Service) EnsureSupportConversation(ctx context.Context, userID uint64, scene string, siteCode ...string) (*ConversationDTO, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
 	if userID == 0 {
 		return nil, ErrPermissionDenied
 	}
-	return s.repo.EnsureSupportConversation(ctx, userID, scene)
+	return s.repo.EnsureSupportConversation(ctx, userID, scene, siteCode...)
 }
 
 func (s *Service) Messages(ctx context.Context, principal Principal, conversationID uint64, page, pageSize int) (*PaginatedResult, error) {