Features:

- Node group CRUD operations with traffic-based filtering
  - Three grouping modes: average distribution, subscription-based, and traffic-based
  - Automatic and manual group recalculation with history tracking
  - Group assignment preview before applying changes
  - User subscription group locking to prevent automatic reassignment
  - Subscribe-to-group mapping configuration
  - Group calculation history and detailed reports
  - System configuration for group management (enabled/mode/auto_create)

  Database:
  - Add node_group table for group definitions
  - Add group_history and group_history_detail tables for tracking
  - Add node_group_ids (JSON) to nodes and subscribe tables
  - Add node_group_id and group_locked fields to user_subscribe table
  - Add migration files for schema changes

internal/logic/admin/server/createNodeLogic.go

@@ -29,13 +29,14 @@ func NewCreateNodeLogic(ctx context.Context, svcCtx *svc.ServiceContext) *Create
 
 func (l *CreateNodeLogic) CreateNode(req *types.CreateNodeRequest) error {
 	data := node.Node{
-		Name:     req.Name,
-		Tags:     tool.StringSliceToString(req.Tags),
-		Enabled:  req.Enabled,
-		Port:     req.Port,
-		Address:  req.Address,
-		ServerId: req.ServerId,
-		Protocol: req.Protocol,
+		Name:         req.Name,
+		Tags:         tool.StringSliceToString(req.Tags),
+		Enabled:      req.Enabled,
+		Port:         req.Port,
+		Address:      req.Address,
+		ServerId:     req.ServerId,
+		Protocol:     req.Protocol,
+		NodeGroupIds: node.JSONInt64Slice(req.NodeGroupIds),
 	}
 	err := l.svcCtx.NodeModel.InsertNode(l.ctx, &data)
 	if err != nil {