Basic GUI client, login dialog, various comments fixes after copypaste.

client/internal/services/core/translations/translations.go

@@ -1,6 +1,7 @@
 package translations
 
 import (
+	"errors"
 	"fmt"
 	"log/slog"
 	"os"
@@ -12,7 +13,11 @@ import (
 	"fyne.io/fyne/v2/lang"
 )
 
-var _ = core.Translations(&translations{})
+var (
+	_ = core.Translations(&translations{})
+
+	errTranslations = errors.New("translations core service")
+)
 
 type translations struct {
 	app        *application.Application
@@ -20,14 +25,14 @@ type translations struct {
 	mainWindow core.MainWindow
 }
 
-// Initialize инициализирует сервис.
+// Initialize initializes service.
 func Initialize(app *application.Application) error {
 	transl := &translations{
 		app: app,
 	}
 
 	if err := app.RegisterService(transl); err != nil {
-		return fmt.Errorf("%w: %w", core.ErrOptions, err)
+		return fmt.Errorf("%w: %w", errTranslations, err)
 	}
 
 	return nil
@@ -67,7 +72,7 @@ func (t *translations) Initialize() error {
 	t.logger.Info("Current system locale.", "locale", lang.SystemLocale().String(), "LANG", langFromEnv)
 
 	if err := lang.AddTranslationsFS(langfiles.LangFiles, "files"); err != nil {
-		return fmt.Errorf("%w: load translations: %w", core.ErrTranslations, err)
+		return fmt.Errorf("%w: load translations: %w", errTranslations, err)
 	}
 
 	return nil