KeyboardLayout.qml and KeyboardLayoutModel.js exactly as they ship in
omarchy-dev 4.0.0.r1744.gf002044 (shell/plugins/bar/widgets/), alongside
the manifest `omarchy plugin clone` generates — upstream has no per-widget
manifest, the widgets share the shell's registry.
Kept on its own branch so `git diff stock..master` shows precisely what
this fork changes.
