The gamepad scheme picker + controller-status now live in the bottom-right corner of the full-screen Keymap overlay (ExpandedPianoWaveformView), next to where a controller player is actually looking — at the large QWERTY/piano. It self-refreshes off the GameController connect/disconnect notifications and switches the live mapping via GamepadDefaults + .menuBandGamepadConfigChanged (same contract the popover used). Removes the row, props, action, and refresh method from MenuBandPopover, and the now-redundant onConnectionChanged popover callback in AppDelegate — the popover is fully gamepad-free now.