Add an opaque xone_dongle session handle to the C ABI bridge:
xone_open() probes, resets, and loads the firmware (path optional),
and xone_pid/xone_chip_id/xone_mac_address/xone_firmware_build return
debug info for the open session. chip captures the firmware build
string from the image header during load.
The Swift app opens a session when the dongle appears and shows PID,
chip ID, MAC address, and firmware build string in a debug section.
Co-Authored-By: qwen3.8-27b@q2_k_xl: added C API session handle and debug UI
Add the CMake build for the Swift + C++ macOS port, mirroring the
refix layout: deps/ modules (Platform, Flags, Sanitizers, FindUnity),
per-module static libraries (usb, auth, mt76, gip, hid, api), a Swift
app entry point with a pure C bridge header, and a Unity test suite
behind BUILD_TESTING.
Swift requires the Ninja or Xcode generator; a guard in
CMakeLists.txt rejects anything else.
Co-Authored-By: qwen (qwen/qwen3.8-27b@q2_k_xl): scaffolded CMake build + tests
portersky