Closes#217. The Japanese catalog now covers every menu string and every
tl! literal, so `complete_menus` is on for `ja` and the tests keep it
complete.
- ja.tsv: about 2,300 rows added after the existing menu rows, which are
unchanged: panels, dialogs, tooltips, the hint bar, document tabs,
status messages and the strings built at run time (section lists,
counts, `@plural` rows). Written from the meaning of the English
labels in the vocabulary Japanese users of vector illustration
software know; product and format names stay in Latin letters, the
trailing "…" is kept, and placeholders appear in both columns.
- Kept in English, as before: the product name, OpenType, the built-in
workspace names and the bracketed perspective preset names.
- tests: the languages that keep those names in English (`cs`, `ja`) are
listed once (`KEEPS_MENU_NAMES`), and the completeness test skips the
kept names for them, so a language can keep them and still be
complete.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>