Build native Windows packages for both RDNA4 targets

Add explicit gfx1200/gfx1201 builds, runtime selection and per-target
code objects. Guard staging, packaging and installation against mixed
architectures; retain gfx1201 compatibility and strict K/M arithmetic.

Adapt realdody's target configuration and MSVC binary16/BOOL portability
fixes from ae530b0. Do not import its forced gfx12 layout on RDNA3.
Add exhaustive binary16 and C++/PowerShell target contract regressions.

Validation: 20 CTest gates on RX 9070 XT; four software-only gfx1200 gates;
MSVC portability compile checks; exact 4K K async and M control outputs;
isolated package install/restore and mixed-target rejection tests.
No physical gfx1200 validation is claimed.

Co-authored-by: realdody <[email protected]>

scripts/windows/test-async-k.ps1

@@ -11,12 +11,14 @@ param(
     [string]$OutputDirectory
 )
 $ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
 $repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
 if (!$NgxCore) { $NgxCore = Join-Path $repo '_nvngx.dll' }
 if (!$DlssDll) { $DlssDll = Join-Path $repo 'nvngx_dlss.dll' }
-if (!$NativeRoot) { $NativeRoot = Join-Path $repo 'build/native-k-gfx1201' }
 if (!$ZludaRoot) { $ZludaRoot = Join-Path $repo 'dist/zluda-windows-api-profile' }
 if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$NativeRoot) { $NativeRoot = Join-Path $repo "build/native-k-$GpuArch" }
 if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/async-k-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
 if ($Resolution -notmatch '^([0-9]+)x([0-9]+)$') { throw 'Resolution must be WIDTHxHEIGHT' }
 $width=$Matches[1]; $height=$Matches[2]
@@ -71,7 +73,7 @@ try {
             Tee-Object -FilePath (Join-Path $OutputDirectory "$mode-comparison.log")
         if ($LASTEXITCODE) { throw "Async $mode output mismatch" }
     }
-    @{passed=$true; architecture='gfx1201'; preset=11; resolution=$Resolution;
+    @{passed=$true; architecture=$GpuArch; preset=11; resolution=$Resolution;
         inputResolution=$InputResolution;
         modes=@('burst','recreate'); framesPerMode=3; exactRgb=$true; gpuBoundaryTiming=[bool]$ProfileGpuBoundary;
         deferredKernelTiming=[bool]$ProfileKernelsDeferred; batchInputs=[bool]$BatchInputCopies; pixelProfile=$PixelProfile} |