feat: add d4r inference engines and Windows parity tooling

Add native K/M/RR inference engines, HIP kernels, replay and validation
harnesses, and Windows DLSS setup and runtime support. Include GPU
profiling tools, build and packaging scripts, platform integration
patches, and implementation documentation.

scripts/windows/build-windows-rdna4.ps1

@@ -0,0 +1,79 @@
+[CmdletBinding()]
+param(
+    [string]$HipRoot = $env:HIP_PATH,
+    [ValidateSet('stable', 'therock')][string]$RuntimeProfile = 'stable',
+    [string]$GpuArch = 'gfx1201',
+    [string]$ZludaRoot,
+    [string]$ToolchainRoot,
+    [string]$BuildDirectory,
+    [string]$InstallDirectory
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+[void](Get-D4RGpuTargetInfo $GpuArch)
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if ($RuntimeProfile -eq 'therock') {
+    if (!$PSBoundParameters.ContainsKey('HipRoot')) { $HipRoot = Join-Path $repo '.tools/therock-10.2.0a20260929/_rocm_sdk_core' }
+    if (!$BuildDirectory) { $BuildDirectory = Join-Path $repo 'build/windows-rdna4-therock' }
+    if (!$InstallDirectory) { $InstallDirectory = Join-Path $repo 'dist/windows-rdna4-therock' }
+}
+if (!$HipRoot) { $HipRoot = 'C:\Program Files\AMD\ROCm\7.2' }
+if (!$BuildDirectory) { $BuildDirectory = Join-Path $repo 'build/windows-rdna4' }
+if (!$InstallDirectory) { $InstallDirectory = Join-Path $repo 'dist/windows-rdna4-diagnostics' }
+if ($GpuArch -ne 'gfx1201') {
+    if (!$PSBoundParameters.ContainsKey('BuildDirectory')) { $BuildDirectory += "-$GpuArch" }
+    if (!$PSBoundParameters.ContainsKey('InstallDirectory')) { $InstallDirectory += "-$GpuArch" }
+}
+$HipRoot = [IO.Path]::GetFullPath($HipRoot).TrimEnd('\', '/')
+$BuildDirectory = [IO.Path]::GetFullPath($BuildDirectory).TrimEnd('\', '/')
+$InstallDirectory = [IO.Path]::GetFullPath($InstallDirectory).TrimEnd('\', '/')
+if (!$ZludaRoot -and (Test-Path (Join-Path $repo '.tools/zluda/zluda/nvcuda.dll'))) {
+    $ZludaRoot = Join-Path $repo '.tools/zluda/zluda'
+}
+if (!$ToolchainRoot -and (Test-Path (Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'))) {
+    $ToolchainRoot = Join-Path $repo '.tools/llvm-mingw-20260922-ucrt-x86_64'
+}
+$cmakeCommand = Get-Command cmake -ErrorAction SilentlyContinue
+$cmake = if ($cmakeCommand) { $cmakeCommand.Source } else { Join-Path $repo '.tools/python/cmake/data/bin/cmake.exe' }
+$ninjaCommand = Get-Command ninja -ErrorAction SilentlyContinue
+$ninja = if ($ninjaCommand) { $ninjaCommand.Source } else { Join-Path $repo '.tools/python/ninja/data/bin/ninja.exe' }
+if (!(Test-Path $ninja)) { $ninja = Join-Path $repo '.tools/python/bin/ninja.exe' }
+if (!(Test-Path $cmake) -or !(Test-Path $ninja)) {
+    throw 'CMake >=3.24 and Ninja required. See docs/windows-rdna4-port.md for local tool setup.'
+}
+New-Item -ItemType Directory -Force $BuildDirectory | Out-Null
+$minhook = Join-Path $repo 'external/MinHook'
+if (!(Test-Path (Join-Path $minhook 'include/MinHook.h'))) {
+    & git clone --depth 1 --branch v1.3.4 https://github.com/TsudaKageyu/minhook.git $minhook
+    if ($LASTEXITCODE) { throw 'MinHook 1.3.4 source download failed.' }
+}
+$minhookCommit = (& git -C $minhook rev-parse HEAD).Trim()
+if ($minhookCommit -ne 'c3fcafdc10146beb5919319d0683e44e3c30d537') {
+    throw "Expected audited MinHook 1.3.4 source, found $minhookCommit"
+}
+$originalPath = $env:PATH
+try {
+    $configure = @('--fresh', '-S', $repo, '-B', $BuildDirectory, '-G', 'Ninja', '-DCMAKE_BUILD_TYPE=RelWithDebInfo',
+        "-DCMAKE_MAKE_PROGRAM=$ninja", "-DD4R_HIP_ROOT=$HipRoot", "-DD4R_GPU_ARCH=$GpuArch", "-DCMAKE_INSTALL_PREFIX=$InstallDirectory")
+    if ($ToolchainRoot) {
+        $compiler = Join-Path $ToolchainRoot 'bin/x86_64-w64-mingw32-clang++.exe'
+        if (!(Test-Path $compiler)) { throw "Compiler missing: $compiler" }
+        $env:PATH = "$(Join-Path $ToolchainRoot 'bin');$originalPath"
+        $configure += "-DCMAKE_CXX_COMPILER=$compiler"
+        $configure += "-DCMAKE_C_COMPILER=$(Join-Path $ToolchainRoot 'bin/x86_64-w64-mingw32-clang.exe')"
+    }
+    if ($ZludaRoot) { $configure += "-DD4R_ZLUDA_ROOT=$ZludaRoot" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake @configure 2>&1 | Tee-Object (Join-Path $BuildDirectory 'configure.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "CMake configure exit=$LASTEXITCODE" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake --build $BuildDirectory --parallel 4 2>&1 | Tee-Object (Join-Path $BuildDirectory 'build.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "Build exit=$LASTEXITCODE" }
+    $ErrorActionPreference = 'Continue'
+    & $cmake --install $BuildDirectory 2>&1 | Tee-Object (Join-Path $BuildDirectory 'install.log')
+    $ErrorActionPreference = 'Stop'
+    if ($LASTEXITCODE) { throw "Install exit=$LASTEXITCODE" }
+    Write-Host "Built diagnostics: $InstallDirectory"
+} finally { $env:PATH = $originalPath }