Add CUDA NGX Ray Reconstruction support

Run the signed CUDA-capable denoiser through feature 13 with independent D/E presets, pre-Init discovery, per-frame guide and camera snapshots, normalized integer guide staging, paired alpha output, and recorded-resource retirement.

Add the required ZLUDA/LLVM patch, behavioral configuration tests, GPU harness coverage, optional denoiser installation and packaging, and tested support limitations. Preserve upstream attribution and distinguish LLVM licensing from the ZLUDA portions of the patch.

scripts/build_release_glibc241.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# Modified in this fork for CUDA Ray Reconstruction support and validation (2026).
 # Run inside packaging/build/Dockerfile.glibc241 with a recent official Rust toolchain and ROCm mounted.
 # Supply isolated, patched ZLUDA/vkd3d checkouts and the usual package_release.sh inputs.
 set -euo pipefail