fix: the web build on a Mac shows chords as ⌘ and ⌥, the keys that run them

A Mac's browser takes the PC's chords with Command for Ctrl, but menus,
the palette, tag lists and Keyboard options labelled them Ctrl+. They
now read as a Mac's (⌥⌘N), and the symbol face that draws ⌘⌥⇧ is fetched
on a Mac at start.

Assisted-by: claude-opus-5.5
da750b15d3clover caruso committed on 10/2/2026, 8:35:43 PMparent5a7c56c
5 files changedLine totals unavailable