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/updateNodeLogic.go

@@ -40,6 +40,7 @@ func (l *UpdateNodeLogic) UpdateNode(req *types.UpdateNodeRequest) error {
 	data.Address = req.Address
 	data.Protocol = req.Protocol
 	data.Enabled = req.Enabled
+	data.NodeGroupIds = node.JSONInt64Slice(req.NodeGroupIds)
 	err = l.svcCtx.NodeModel.UpdateNode(l.ctx, data)
 	if err != nil {
 		l.Errorw("[UpdateNode] Update Database Error: ", logger.Field("error", err.Error()))