@pi/ui's slide toggle hides its input with display: none and gives it
no name: neither the Tab key nor a screen reader could reach the
switches in settings (visibility, the public's proposals, the
definition of done, the link for clients) or the bell's (e-mail copy,
notices on this device). They are pi-checkbox now, each with a name
saying what it turns on: reachable by keyboard, toggled with the space
bar and announced.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>