_gpu_dxg_open_gate.nx

_gpu_dxg_open_gate.nx -- SOVEREIGN-GPU ladder R2 (adapter-handle open from LUID). R0 reached the real GPU set (LX_DXENUMADAPTERS2). R1 positively IDed the discrete RTX 5080 by its ADAPTERTYPE bit. R2 takes that IDENTITY (the adapter's LUID) and opens a fresh kernel ADAPTER HANDLE for it through the raw /dev/dxg ioctl LX_DXOPENADAPTERFROMLUID (0xC00C4701, _IOWR(0x47,0x01,12)) -- the openable handle that LX_DXCREATEDEVICE (R3) will consume to make the WDDM device. ABI (WSL2-Linux-Kernel linux-msft-wsl-6.6.y, include/uapi/misc/d3dkmthk.h; recon-confirmed live): struct winluid { __u32 a; __u32 b; } // 8 bytes struct d3dkmt_openadapterfromluid { winluid adapter_luid(@0,IN); d3dkmthandle adapter_handle(@8,OUT); } GREEN iff (author=organ, from REAL device returns, never $?): A) enum ret==0 AND num_adapters>=2 AND exactly ONE discrete hw adapter (R1 identity holds); B) open(discrete LUID) ret==0 AND opened_handle != 0; C) opened discrete handle != the discrete adapter's ENUM handle (a FRESH kernel allocation, not an echo); D) open(integrated LUID) ret==0 AND its handle != 0 AND != the discrete handle (DISCRIMINATION: the open resolves the SPECIFIC adapter from its LUID, not "any adapter"); E) TAMPER matrix, each distinct from the real ret==0 AND yielding handle==0: T1 bogus LUID (0xdeadbeef) -> -EINVAL ; T2 bogus ioctl code (0x99..) ; T3 open on a non-dxg fd. The fd close releases the opened adapter handles (dxgkrnl frees per-fd handles on close). Marker -> knowledge/status/gpu_dxg.log (DXGOPENGATE). raw syscalls only (no libvulkan/cuda/dxcore/libc). NO-WAVE: this rung proves only "open a per-adapter kernel handle from the LUID". ZERO throughput/exceed. license_tier: ORIGINAL