The v3 Pedalboard's settingsTarget() resolved settings-first, so a
plugin that ships both a screen and a settings panel (notably the
bundled Audio Engine) could only ever reach its settings from the
pedalboard — its actual page was unreachable.
Flip to screen-first (stompbox metaphor: step on the pedal, see the
pedal), falling back to settings when there is no screen. Keep a
settings fallback in openPluginSettings() when a declared screen
isn't mounted yet (installing/failed) so settings-bearing plugins are
never stranded on a toast. Drive the pedal aria-label off the same
target so it never promises the wrong surface. Update the unit test
contract to screen > settings > none.
Fixes#555
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
