Add CMake vcpkg UI validation target

scripts/automation/platform-build.ps1

@@ -94,11 +94,50 @@ function Expand-ArgumentList {
     return $expanded
 }
 
+function Get-VcpkgRoot {
+    $candidates = @()
+    if ($env:VCPKG_ROOT) {
+        $candidates += $env:VCPKG_ROOT
+    }
+
+    $programFiles = @($env:ProgramFiles, ${env:ProgramFiles(x86)}) | Where-Object { $_ }
+    $vsYears = @("2026", "2022")
+    $vsEditions = @("Community", "Professional", "Enterprise", "BuildTools", "Preview")
+    foreach ($root in $programFiles) {
+        foreach ($year in $vsYears) {
+            foreach ($edition in $vsEditions) {
+                $candidates += (Join-Path $root "Microsoft Visual Studio\$year\$edition\VC\vcpkg")
+            }
+        }
+    }
+
+    foreach ($candidate in $candidates) {
+        if ($candidate -and (Test-Path -LiteralPath (Join-Path $candidate "vcpkg.exe") -PathType Leaf)) {
+            return (Resolve-Path -LiteralPath $candidate).Path
+        }
+    }
+
+    throw "VCPKG_ROOT was not set and no Visual Studio bundled vcpkg root was found."
+}
+
+function Set-VcpkgRootEnvironment {
+    $vcpkgRoot = Get-VcpkgRoot
+    $env:VCPKG_ROOT = $vcpkgRoot
+    return [ordered]@{
+        vcpkgRoot = $vcpkgRoot
+        vcpkgCommand = Join-Path $vcpkgRoot "vcpkg.exe"
+    }
+}
+
 $Presets = @(Expand-ArgumentList -Values $Presets)
 $Targets = @(Expand-ArgumentList -Values $Targets)
 
 $cmakeCommand = "cmake"
 $androidToolchain = $null
+$vcpkgToolchain = $null
+if ($Presets | Where-Object { $_ -like "*vcpkg*" }) {
+    $vcpkgToolchain = Set-VcpkgRootEnvironment
+}
 if ($Presets | Where-Object { $_ -like "android-*" }) {
     . "$PSScriptRoot\android-sdk-env.ps1"
     $androidToolchain = Set-AndroidSdkToolchainEnvironment
@@ -152,6 +191,7 @@ $elapsed = [int]((Get-Date) - $started).TotalMilliseconds
     exitCode = $overallExitCode
     elapsedMs = $elapsed
     androidToolchain = $androidToolchain
+    vcpkgToolchain = $vcpkgToolchain
     results = $results
 } | ConvertTo-Json -Compress -Depth 6
 

scripts/dev/check_platform_build_targets.py

@@ -33,6 +33,7 @@ REQUIRED_ANDROID_PRESETS = [
 EXPECTED_CMAKE_PLATFORM_TARGETS = [
     "panopainter_platform_build_headless",
     "panopainter_platform_build_android_assets",
+    "panopainter_platform_build_vcpkg_ui_core",
     "panopainter_platform_build_apple_remote",
 ]