EvtIddCxDeviceIoControl now dispatches the pf-vdisplay-proto control plane (new
src/control.rs): IOCTL_GET_INFO writes InfoReply{protocol_version, watchdog_timeout_s}
(the host asserts the version + fails loudly on mismatch), IOCTL_PING bumps the watchdog
keepalive. ADD/REMOVE/SET_RENDER_ADAPTER/CLEAR_ALL are dispatched but stubbed
(STATUS_NOT_IMPLEMENTED) pending create_monitor + the real mode DDIs (next). Unknown
IOCTLs -> STATUS_NOT_FOUND. Builds CI-green; warnings are the *2/HDR stubs (STEP 7) +
the stored adapter handle (read by create_monitor, next).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler
49f403f48a