Roll the pf-client-core slot pattern to the Apple client (Swift):
- GamepadManager tracks all connected GCControllers, assigning each a stable
lowest-free wire pad index + concrete type, emitting GamepadArrival on
connect and GamepadRemove on disconnect (index freed for reuse on re-plug).
- GamepadCapture binds every controller with per-controller Slot state
(buttons/axes/fingers/motion), threading the pad index into flags on every
event; GamepadWire/InputEvents carry the pad + the two new events.
- GamepadFeedback + RumbleRenderer go per-pad (rumbleByPad, slots[pad]),
routing rumble/HID back to the correct controller by wire index.
- ContentView/Settings surface every forwarded controller.
pad 0 => flags 0, so single-controller wire is byte-identical. Cannot build
on the Linux dev box (no Swift toolchain / Apple frameworks); wire bytes
hand-checked against input.rs and GamepadWireTests extended for multi-pad.
CI apple.yml (swift build/test on macOS) is the compile gate.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler
97c67b2692