Future> load(Locale locale) async {
  return await cache.load(locale)
      ?? await remote.load(locale)   // saves to cache on success
      ?? await asset.load(locale);   // always works
}

// assets/i18n/en.json — flat key → ICU string
{
  "welcome": "Welcome, {name}!",
  "retry":   "Try again"
}

Text(context.l10n.t('welcome', args: {'name': 'Amir'}))

app start / locale change
  → LocalizationCubit.changeLocale()
    → LocalizationRepository.load()
      → cache? → yes: use it
      → no: remote? → yes: use + save cache
      → no: asset → always works
        → AppLocalization emitted
          → MaterialApp rebuilds
            → all context.l10n calls updated