完善多赛道联调与全局产品架构

backend/internal/service/event_play_service.go

@@ -35,6 +35,8 @@ type EventPlayResult struct {
 	} `json:"release,omitempty"`
 	ResolvedRelease *ResolvedReleaseView `json:"resolvedRelease,omitempty"`
 	Play            struct {
+		AssignmentMode *string              `json:"assignmentMode,omitempty"`
+		CourseVariants []CourseVariantView  `json:"courseVariants,omitempty"`
 		CanLaunch      bool                 `json:"canLaunch"`
 		PrimaryAction  string               `json:"primaryAction"`
 		Reason         string               `json:"reason"`
@@ -77,6 +79,11 @@ func (s *EventPlayService) GetEventPlay(ctx context.Context, input EventPlayInpu
 	result.Event.DisplayName = event.DisplayName
 	result.Event.Summary = event.Summary
 	result.Event.Status = event.Status
+	variantPlan := resolveVariantPlan(event.ReleasePayloadJSON)
+	result.Play.AssignmentMode = variantPlan.AssignmentMode
+	if len(variantPlan.CourseVariants) > 0 {
+		result.Play.CourseVariants = variantPlan.CourseVariants
+	}
 	if event.CurrentReleasePubID != nil && event.ConfigLabel != nil && event.ManifestURL != nil {
 		result.Release = &struct {
 			ID                     string  `json:"id"`