diff --git a/.gitea/workflows/build-windows.yml b/.gitea/workflows/build-windows.yml
index 4b40aad06..7f01035cb 100644
--- a/.gitea/workflows/build-windows.yml
+++ b/.gitea/workflows/build-windows.yml
@@ -33,14 +33,26 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Show toolchain versions
-        shell: bash
+      - name: Verify host toolchain
+        shell: pwsh
         run: |
-          rustc --version
-          cargo --version
-          clang --version
-          flutter --version
-          python --version
+          $required = 'node','pwsh','git','bash','python','rustc','cargo','rustup','clang','flutter','nuget','cmake','ninja'
+          $missing = @()
+          foreach ($tool in $required) {
+            $cmd = Get-Command $tool -ErrorAction SilentlyContinue
+            if (-not $cmd) { $missing += $tool; continue }
+            $ver = & $tool --version 2>&1 | Select-Object -First 1
+            Write-Host ("{0,-10} {1}  ({2})" -f $tool, $cmd.Source, $ver)
+          }
+          if ($missing.Count -gt 0) {
+            Write-Error ("Missing tools on runner: {0}. Re-run provision.ps1 or install manually." -f ($missing -join ', '))
+            exit 1
+          }
+          if (-not $env:VCPKG_ROOT -or -not (Test-Path "$env:VCPKG_ROOT\vcpkg.exe")) {
+            Write-Error "VCPKG_ROOT not set or vcpkg.exe missing at $env:VCPKG_ROOT"
+            exit 1
+          }
+          Write-Host "VCPKG_ROOT  $env:VCPKG_ROOT"
 
       - name: Install flutter_rust_bridge codegen tools
         shell: bash
diff --git a/ci/runners/windows/provision.ps1 b/ci/runners/windows/provision.ps1
index 903bfc8a1..b3e9c8b20 100644
--- a/ci/runners/windows/provision.ps1
+++ b/ci/runners/windows/provision.ps1
@@ -47,10 +47,14 @@ if (-not (Get-Command choco -ErrorAction SilentlyContinue)) {
 }
 
 Write-Host '==> Installing base packages'
-choco install -y --no-progress git python311 nuget.commandline 7zip cmake ninja
+# nodejs-lts: act_runner needs node to execute JavaScript actions.
+# powershell-core: workflows commonly use `shell: pwsh` (PS 7), not the OS's PS 5.1.
+choco install -y --no-progress git python311 nuget.commandline 7zip cmake ninja nodejs-lts powershell-core
 Add-MachinePath 'C:\Program Files\Git\cmd'
 Add-MachinePath 'C:\Python311'
 Add-MachinePath 'C:\Python311\Scripts'
+Add-MachinePath 'C:\Program Files\nodejs'
+Add-MachinePath 'C:\Program Files\PowerShell\7'
 
 # --- 2. Visual Studio 2022 Build Tools (MSVC v143 + Win10 SDK) ---
 $vsInstaller = "$env:ProgramFiles(x86)\Microsoft Visual Studio\Installer\vswhere.exe"