feat(localization): Implement Swedish localization and error messages

- Added localization support for Swedish and English languages.
- Integrated localized strings for user messages in the API error mapper.
- Updated UI components to use localized strings for labels and messages.
- Ensured all error messages are context-aware and utilize the localization framework.
- Created regression test to prevent common ASCII fallbacks in Swedish UI text.

flutter/lib/features/recipes/presentation/create_recipe_screen.dart

@@ -92,7 +92,7 @@ class _CreateRecipeScreenState extends ConsumerState<CreateRecipeScreen> {
         return;
       }
       setState(() {
-        _parseError = mapErrorToUserMessage(e);
+        _parseError = mapErrorToUserMessage(e, context);
         _isParsing = false;
       });
     }
@@ -146,7 +146,7 @@ class _CreateRecipeScreenState extends ConsumerState<CreateRecipeScreen> {
         return;
       }
       setState(() {
-        _saveError = mapErrorToUserMessage(e);
+        _saveError = mapErrorToUserMessage(e, context);
         _isSaving = false;
       });
     }