Bundle the ROCm 7.2.4 runtime in the release zip

docs/architecture.md

@@ -75,7 +75,7 @@ The release zip (`scripts/package_release.sh`) is unpacked into the folder that
 **Settings.** When an `d4r.ini` sits next to the shim, the shim turns it into the same environment variables the developer launcher sets, with the release's defaults. A variable that is already set, for example in the launch options, wins. Settings for the Linux side (ZLUDA's and the bridge's) are handed to the bridge through `d4rSetEnv` right after it is loaded, before its first CUDA call.
 
 **Loading ROCm.** Steam runs GE-Proton 11 inside its container runtime (SteamLinuxRuntime_4), whose library search path has no ROCm. The bridge therefore:
-- loads HIP, HSA and comgr by path, from `RocmDir` (default `/opt/rocm`);
+- loads HIP, HSA and comgr by path, from `RocmDir` (default: the release's bundled `d4r/rocm`, else `/opt/rocm`);
 - looks up any dependency they lack in the host's library directories, which the container mounts under `/run/host`;
 - sets `XDG_CACHE_HOME` only while ZLUDA initialises, so ZLUDA's kernel cache goes to `~/.cache/d4r` without affecting the rest of the game.
 

docs/building.md

@@ -84,6 +84,7 @@ In the game, pick DLSS as the upscaler (OptiScaler intercepts it). Every setting
 ## 7. Package a release
 
 ```sh
+scripts/fetch_rocm_runtime.sh         # -> ~/.cache/d4r-rocm-runtime (AMD's ROCm 7.2.4 runtime, checksummed)
 D4R_OPTISCALER=/path/to/OptiScaler_0.9.4.7z \
 D4R_DLSS_DLLS=/path/to/310.7/nvngx_dlss.dll:/path/to/310.9/nvngx_dlss.dll \
 D4R_BUNDLE_DLSS=/path/to/nvngx_dlss.dll D4R_BUNDLE_NGX=/path/to/_nvngx.dll D4R_BUNDLE_TEX=kernels/out/native \
@@ -96,7 +97,7 @@ The script:
 - writes the kernel manifest from the DLLs you list (it records hashes of their PTX, nothing else);
 - stages OptiScaler as `dxgi.dll` with the settings in `packaging/optiscaler.settings`;
 - adds NVIDIA's two DLLs and the texture kernels (built from NVIDIA's PTX by `kernels/build.sh tex`);
-- zips the result together with the ZLUDA and vkd3d-proton builds, `packaging/d4r.ini`, the licenses and the patches.
+- zips the result together with the ZLUDA and vkd3d-proton builds, the ROCm runtime (as `d4r/rocm`), `packaging/d4r.ini`, the licenses and the patches.
 
 The NVIDIA files are not covered by d4r's license; redistributing them is up to whoever publishes the zip. `D4R_BUNDLE_NVIDIA=0` builds `d4r-<version>-nonvidia.zip` without them and without the texture kernels. [architecture.md](architecture.md#portable-installs-the-release-zip) describes how the installed files work together.