* i18n: add persisted English and Japanese interface language
* ROADMAP: the language entry goes at the top of the log, dated
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: midasdf <205497066+midasdf@users.noreply.github.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>