Add the Czech catalog (2,056 UI messages, 246 format templates), the
language-menu entry, locale detection (cs, cs-CZ, cs_CZ.UTF-8) and
regression tests for switching, persistence, dates, placeholders and
glyphs. Translate a few face/model, person and HDR/PDF captions through
the existing tr() interface. Settings > Language now wraps its buttons,
since twelve language names no longer fit a narrow window.
What's New prose stays English, like most catalogs. AI-assisted, with
an independent review pass; not yet proofread by a native speaker.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
