feat(ci): enhance Windows SDK checks in CI and release workflows

- Added checks to ensure Windows SDK environment variables are set, providing warnings if they are not.
- Included a step to verify the presence of kernel32.lib, improving diagnostics for Windows builds.

Benefits:
- Increases the robustness of the CI and release workflows by ensuring necessary SDK components are available.
- Enhances build reliability on Windows by proactively identifying potential issues with the SDK setup.

.github/workflows/ci.yml

@@ -220,6 +220,12 @@ jobs:
           }
         }
         Write-Host "MSVC developer environment variables exported (selected set)"
+
+    - name: Ensure MSVC Dev Cmd (Windows)
+      if: runner.os == 'Windows'
+      uses: ilammy/msvc-dev-cmd@v1
+      with:
+        arch: x64
     
     - name: Diagnose vcpkg (Windows)
       if: runner.os == 'Windows' && (steps.vcpkg.outcome == 'failure' || steps.vcpkg.outcome == 'success')
@@ -362,6 +368,17 @@ jobs:
         }
         Write-Host "Using vcpkg toolchain: $env:CMAKE_TOOLCHAIN_FILE"
 
+        if (-not $env:WindowsSdkDir -or -not $env:WindowsSdkVersion) {
+          Write-Host "::warning::Windows SDK environment variables not set (WindowsSdkDir/WindowsSdkVersion)"
+        } else {
+          $kernelLib = Join-Path $env:WindowsSdkDir ("Lib/{0}/um/x64/kernel32.lib" -f $env:WindowsSdkVersion.TrimEnd('\'))
+          if (Test-Path $kernelLib) {
+            Write-Host "Found Windows SDK kernel32.lib at: $kernelLib"
+          } else {
+            Write-Host "::warning::kernel32.lib not found at expected path: $kernelLib"
+          }
+        }
+
         $linker = "link.exe"
         if ($env:MSVC_LINK_PATH -and (Test-Path $env:MSVC_LINK_PATH)) {
           $linker = $env:MSVC_LINK_PATH

.github/workflows/release.yml

@@ -295,6 +295,12 @@ jobs:
           }
           Write-Host "MSVC developer environment variables exported (selected set)"
 
+      - name: "Ensure MSVC Dev Cmd (Windows)"
+        if: runner.os == 'Windows'
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          arch: x64
+
       - name: "Free Disk Space (Linux)"
         if: runner.os == 'Linux'
         shell: bash
@@ -372,6 +378,17 @@ jobs:
           }
           Write-Host "Using vcpkg toolchain: $env:CMAKE_TOOLCHAIN_FILE"
 
+          if (-not $env:WindowsSdkDir -or -not $env:WindowsSdkVersion) {
+            Write-Host "::warning::Windows SDK environment variables not set (WindowsSdkDir/WindowsSdkVersion)"
+          } else {
+            $kernelLib = Join-Path $env:WindowsSdkDir ("Lib/{0}/um/x64/kernel32.lib" -f $env:WindowsSdkVersion.TrimEnd('\'))
+            if (Test-Path $kernelLib) {
+              Write-Host "Found Windows SDK kernel32.lib at: $kernelLib"
+            } else {
+              Write-Host "::warning::kernel32.lib not found at expected path: $kernelLib"
+            }
+          }
+
           $linker = "link.exe"
           if ($env:MSVC_LINK_PATH -and (Test-Path $env:MSVC_LINK_PATH)) {
             $linker = $env:MSVC_LINK_PATH