feat: game lobby service

user/internal/ports/domain_event_publishers.go

@@ -182,8 +182,13 @@ type ProfileChangedEvent struct {
 	// Operation stores the profile-change event kind.
 	Operation ProfileChangedOperation
 
-	// RaceName stores the latest exact race name after the commit.
-	RaceName common.RaceName
+	// UserName stores the immutable handle associated with the account at the
+	// moment the event is published.
+	UserName common.UserName
+
+	// DisplayName stores the latest display name after the commit. An empty
+	// value is valid and means no display name is set.
+	DisplayName common.DisplayName
 }
 
 // Validate reports whether event is structurally complete.
@@ -194,8 +199,11 @@ func (event ProfileChangedEvent) Validate() error {
 	if !event.Operation.IsKnown() {
 		return fmt.Errorf("profile changed event operation %q is unsupported", event.Operation)
 	}
-	if err := event.RaceName.Validate(); err != nil {
-		return fmt.Errorf("profile changed event race name: %w", err)
+	if err := event.UserName.Validate(); err != nil {
+		return fmt.Errorf("profile changed event user name: %w", err)
+	}
+	if err := event.DisplayName.Validate(); err != nil {
+		return fmt.Errorf("profile changed event display name: %w", err)
 	}
 
 	return nil