Add Français (fr) as a complete UI catalog and select it for every
French locale. Preferences lists it, and Auto follows fr, fr_FR,
fr_CA and fr_BE. About credits labels now go through the catalog.
Coverage tests check commands, All tools labels and every tl! literal.
The bundled Latin faces cover the catalog.
Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: iMhack <iMhack87@users.noreply.github.com>
