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/subscribe/createSubscribeLogic.go

@@ -50,6 +50,8 @@ func (l *CreateSubscribeLogic) CreateSubscribe(req *types.CreateSubscribeRequest
 		Quota:             req.Quota,
 		Nodes:             tool.Int64SliceToString(req.Nodes),
 		NodeTags:          tool.StringSliceToString(req.NodeTags),
+		NodeGroupIds:      subscribe.JSONInt64Slice(req.NodeGroupIds),
+		NodeGroupId:       req.NodeGroupId,
 		Show:              req.Show,
 		Sell:              req.Sell,
 		Sort:              0,