增加客服分组管理

backend/internal/model/chat.go

@@ -73,3 +73,29 @@ type ChatQrCode struct {
 func (ChatQrCode) TableName() string {
 	return "chat_qrcode_pool"
 }
+
+type ChatSupportGroup struct {
+	ID          uint64    `gorm:"primaryKey" json:"id"`
+	Code        string    `gorm:"size:64;not null;uniqueIndex" json:"code"`
+	Name        string    `gorm:"size:64;not null" json:"name"`
+	Description string    `gorm:"size:255;not null;default:''" json:"description"`
+	Status      string    `gorm:"size:16;not null;default:'active';index" json:"status"`
+	SortOrder   int       `gorm:"not null;default:0" json:"sort_order"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+func (ChatSupportGroup) TableName() string {
+	return "chat_support_groups"
+}
+
+type ChatSupportGroupMember struct {
+	ID        uint64    `gorm:"primaryKey" json:"id"`
+	GroupID   uint64    `gorm:"not null;uniqueIndex:uk_support_group_member" json:"group_id"`
+	AdminID   uint64    `gorm:"column:admin_user_id;not null;uniqueIndex:uk_support_group_member;index" json:"admin_id"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+func (ChatSupportGroupMember) TableName() string {
+	return "chat_support_group_members"
+}