feat: game lobby service

user/internal/service/accountview/service.go

@@ -104,8 +104,13 @@ type AccountView struct {
 	// Email stores the exact normalized login e-mail address.
 	Email string `json:"email"`
 
-	// RaceName stores the current user-facing race name.
-	RaceName string `json:"race_name"`
+	// UserName stores the immutable `player-<suffix>` handle assigned at
+	// account creation.
+	UserName string `json:"user_name"`
+
+	// DisplayName stores the current optional free-text user label. An empty
+	// value indicates no display name is set.
+	DisplayName string `json:"display_name,omitempty"`
 
 	// PreferredLanguage stores the current BCP 47 preferred language.
 	PreferredLanguage string `json:"preferred_language"`
@@ -177,7 +182,8 @@ func (aggregate Aggregate) View() AccountView {
 	view := AccountView{
 		UserID:            aggregate.AccountRecord.UserID.String(),
 		Email:             aggregate.AccountRecord.Email.String(),
-		RaceName:          aggregate.AccountRecord.RaceName.String(),
+		UserName:          aggregate.AccountRecord.UserName.String(),
+		DisplayName:       aggregate.AccountRecord.DisplayName.String(),
 		PreferredLanguage: aggregate.AccountRecord.PreferredLanguage.String(),
 		TimeZone:          aggregate.AccountRecord.TimeZone.String(),
 		Entitlement: EntitlementSnapshotView{
@@ -280,6 +286,9 @@ func (loader *Loader) Load(ctx context.Context, userID common.UserID) (Aggregate
 	default:
 		return Aggregate{}, shared.ServiceUnavailable(err)
 	}
+	if accountRecord.IsDeleted() {
+		return Aggregate{}, shared.SubjectNotFound()
+	}
 
 	entitlementSnapshot, err := loader.entitlements.GetByUserID(ctx, userID)
 	switch {