- Extract 1149 translation keys from i18n.py into locales/ru.json and locales/en.json
- Rewrite i18n.py as a lightweight JSON loader (5287 → 128 lines)
- Add I18nService.reload() for runtime hot-reload without restart
- Add I18nService.available_languages() to list loaded language codes
- Public API unchanged: t(), get(), get_all(), add_translation()
- New languages require only a new *.json file in locales/ — no code changes
Bump version: 1.1.6 → 1.1.7
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