- add i18n/GLOSSARY.md with canonical template phrases for ru/de/ko/zh
  (section labels, headings, changelog/nav headings, admonition titles,
  do-not-translate terms), adapted to RichText conventions

- unify theme.admonition.* in code.json across locales: capitalize
  ru/de, sync with the explicit markdown titles, drop caution/warning
  duplicates (ru caution→Осторожно, danger→Опасно; de nouns capitalized;
  ko note→참고; zh note→注意, caution→谨慎)

- normalize headings: ru Конфиг по умолчанию→Конфигурация по умолчанию,
  Применение→Использование; ko 매개변수→파라미터, 예시→예제,
  기본 구성→기본 설정, 관련 예제→관련 샘플; de fix "Wie geht es weiter?"
  and double-space "Neue API" (anchors untouched)

- enforce do-not-translate terms: ru АПИ→API (99), шину событий→Event Bus;
  zh 事件总线方法→Event Bus 方法

- align section labels, headings and admonition titles across
  ru/de/ko/zh with the i18n/GLOSSARY.md canon
- Change log label normalized: ru Журнал изменений, de Changelog,
  ko 변경 로그, zh 更新日志
- ru: Related articles → Полезные статьи; tip/info admonition
  → Подсказка/К сведению; Returns/New functionality headings
- ko: Parameters heading → 매개변수; Related samples → 관련 예제
- zh: note/caution admonition titles → 备注/注意
- sync theme.admonition.* in ru/ko/zh code.json with md titles
- update i18n/GLOSSARY.md reference tables