- the CJK fallback order follows the UI language's script, but the fonts were
only installed on the first frame: switching 日本語 ↔ 简体中文 at runtime kept
the previous language's Han forms. The app remembers the language its fonts
were built for and reinstalls them when it changes.
- the native menu bar rebuilds on any language change (keyed on the language
code, not on "uses CJK fonts", which is true for both CJK languages)
- restore the tests the language-table change dropped, for every language:
core catalog entries, user-named menu items stay untranslated, the window
paints each language and menu ids don't change with it, CJK glyphs in every
UI family, and the UI runs without craft-fonts
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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