Fix Windows Source SDK MP branch bootstrap

ddiff --git a/docs/WINDOWS_WORKFLOW_SDK_BOOTSTRAP.md b/docs/WINDOWS_WORKFLOW_SDK_BOOTSTRAP.md
iindex 025e23d..0bfa3b3 100644
---- a/docs/WINDOWS_WORKFLOW_SDK_BOOTSTRAP.md
++++ b/docs/WINDOWS_WORKFLOW_SDK_BOOTSTRAP.md
@@@ -1,23 +1,10 @@
--# Windows DLL workflow bootstrap
++# Windows Source SDK bootstrap
  
--The Windows GitHub Actions runner does not have the local `engine/source-sdk-2013` checkout that exists on the Linux workstation.
++The GitHub Actions Windows runner does not have Alex's local `engine/source-sdk-2013` checkout. The workflow bootstraps it by cloning ValveSoftware/source-sdk-2013.
  
--The workflow now bootstraps Valve's Source SDK 2013 multiplayer tree into:
++Important detail: the Source SDK 2013 multiplayer code is normally on the `mp` branch, not necessarily in a `mp/` directory on the default branch. The bootstrap script now supports both layouts:
  
--```text
--engine/source-sdk-2013
--```
++- `source-sdk-2013` checked out directly on the `mp` branch, with `src/...` at repo root
++- older/mirrored layout with `mp/src/...`
  
--Then it applies the OpenVibe SDK patch, skips the Linux QuickJS static-library build, builds QuickJS with MSVC, generates Visual Studio projects, builds `client.dll/server.dll`, and only uploads DLLs when `client.dll` contains OpenVibe command strings such as `ov_join`, `ov_menu`, or `OpenVibe`.
--
--Use:
--
--```bash
--tools/gh-windows-build-and-install.sh
--```
--
--or debug the latest run with:
--
--```bash
--tools/windows-workflow-debug-and-install.sh
--```
++The workflow should not upload or install stock/stale DLLs. A DLL artifact is considered useful only when `client.dll` contains OpenVibe command strings such as `ov_join`, `ov_menu`, or `OpenVibe`.
ddiff --git a/tools/bootstrap-source-sdk-2013-windows.ps1 b/tools/bootstrap-source-sdk-2013-windows.ps1
iindex be99448..26e3197 100644
---- a/tools/bootstrap-source-sdk-2013-windows.ps1
++++ b/tools/bootstrap-source-sdk-2013-windows.ps1
@@@ -4,48 +4,95 @@ $Root = if ($env:OPENVIBE_ROOT) { (Resolve-Path $env:OPENVIBE_ROOT).Path } else
  $Sdk = if ($env:OPENVIBE_SDK) { $env:OPENVIBE_SDK } else { Join-Path $Root 'engine/source-sdk-2013' }
  $Src = Join-Path $Sdk 'src'
  $Deps = Join-Path $Root '_deps'
--$ValveRepo = Join-Path $Deps 'source-sdk-2013'
  $LogDir = Join-Path $Root 'artifacts/windows-build-debug'
  New-Item -ItemType Directory -Force -Path $LogDir | Out-Null
  
  function Say($m) { Write-Host "[openvibe-sdk-bootstrap] $m" }
++function Has-HL2MP($base) {
++  return ((Test-Path (Join-Path $base 'src/game/client/hl2mp')) -and (Test-Path (Join-Path $base 'src/game/server/hl2mp')))
++}
++function Run-Git($args, $logName) {
++  $log = Join-Path $LogDir $logName
++  Say "git $args"
++  & git @args 2>&1 | Tee-Object -FilePath $log
++  if ($LASTEXITCODE -ne 0) { throw "git $args failed with exit code $LASTEXITCODE. See $log" }
++}
  
  Say "root=$Root"
  Say "sdk=$Sdk"
++Say "logdir=$LogDir"
  
--if ((Test-Path (Join-Path $Src 'game/client/hl2mp')) -and (Test-Path (Join-Path $Src 'game/server/hl2mp'))) {
--  Say "existing SDK tree looks usable"
++if (Has-HL2MP $Sdk) {
++  Say "existing SDK tree already contains HL2MP client/server"
    exit 0
  }
  
  New-Item -ItemType Directory -Force -Path $Deps | Out-Null
  
--if (!(Test-Path (Join-Path $ValveRepo '.git'))) {
--  Say "cloning ValveSoftware/source-sdk-2013"
++# Valve's source-sdk-2013 repository is normally organized by branches: mp and sp.
++# Some forks/mirrors use root folders like mp/src. Support both layouts.
++$RepoUrl = if ($env:OPENVIBE_SOURCE_SDK_REPO) { $env:OPENVIBE_SOURCE_SDK_REPO } else { 'https://github.com/ValveSoftware/source-sdk-2013.git' }
++$ValveRepo = Join-Path $Deps 'source-sdk-2013-mp'
++
++if (Test-Path $ValveRepo) { Remove-Item -Recurse -Force $ValveRepo }
++
++$cloned = $false
++try {
++  Say "cloning Valve Source SDK 2013 branch mp"
++  Run-Git @('clone','--depth','1','--branch','mp',$RepoUrl,$ValveRepo) 'bootstrap-git-clone-mp.log'
++  $cloned = $true
++} catch {
++  Say "mp branch clone failed: $($_.Exception.Message)"
    if (Test-Path $ValveRepo) { Remove-Item -Recurse -Force $ValveRepo }
--  git clone --depth 1 https://github.com/ValveSoftware/source-sdk-2013.git $ValveRepo 2>&1 | Tee-Object -FilePath (Join-Path $LogDir 'bootstrap-git-clone.log')
--} else {
--  Say "updating cached Valve source-sdk-2013"
--  Push-Location $ValveRepo
--  git fetch --depth 1 origin 2>&1 | Tee-Object -FilePath (Join-Path $LogDir 'bootstrap-git-fetch.log')
--  git reset --hard origin/master 2>&1 | Tee-Object -FilePath (Join-Path $LogDir 'bootstrap-git-reset.log')
--  Pop-Location
++  Say "falling back to default branch clone"
++  Run-Git @('clone','--depth','1',$RepoUrl,$ValveRepo) 'bootstrap-git-clone-default.log'
++  $cloned = $true
++}
++
++if (-not $cloned) { throw "could not clone Source SDK repo" }
++
++"=== Valve repo root ===" | Out-File (Join-Path $LogDir 'valve-repo-root.txt')
++Get-ChildItem -Force $ValveRepo | Select-Object Mode,Length,Name | Format-Table -AutoSize | Out-File (Join-Path $LogDir 'valve-repo-root.txt') -Append
++"=== candidate src folders ===" | Out-File (Join-Path $LogDir 'valve-candidate-src.txt')
++Get-ChildItem -Path $ValveRepo -Recurse -Directory -Filter src -ErrorAction SilentlyContinue |
++  Select-Object FullName | Format-List | Out-File (Join-Path $LogDir 'valve-candidate-src.txt') -Append
++
++$candidates = @(
++  $ValveRepo,
++  (Join-Path $ValveRepo 'mp'),
++  (Join-Path $ValveRepo 'srcsdk/mp'),
++  (Join-Path $ValveRepo 'source-sdk-2013/mp')
++)
++
++$SourceRoot = $null
++foreach ($candidate in $candidates) {
++  if (Has-HL2MP $candidate) {
++    $SourceRoot = $candidate
++    break
++  }
  }
  
--$Mp = Join-Path $ValveRepo 'mp'
--if (!(Test-Path (Join-Path $Mp 'src'))) {
--  Get-ChildItem -Force $ValveRepo | Select-Object Mode,Length,Name | Format-Table -AutoSize | Out-File (Join-Path $LogDir 'valve-repo-root.txt')
--  throw "Valve source-sdk-2013 clone does not contain mp/src at $Mp/src"
++if (-not $SourceRoot) {
++  $matches = Get-ChildItem -Path $ValveRepo -Recurse -Directory -Filter hl2mp -ErrorAction SilentlyContinue |
++    Where-Object { $_.FullName -match '[\\/]src[\\/]game[\\/](client|server)[\\/]hl2mp$' }
++  $matches | Select-Object FullName | Format-List | Out-File (Join-Path $LogDir 'hl2mp-folder-search.txt')
++  throw "Could not find Source SDK 2013 MP HL2MP layout after clone. Check valve-repo-root.txt, valve-candidate-src.txt, and hl2mp-folder-search.txt."
  }
  
--Say "copying mp branch layout into $Sdk"
++Say "source root=$SourceRoot"
++Say "copying Source SDK MP layout into $Sdk"
  if (Test-Path $Sdk) { Remove-Item -Recurse -Force $Sdk }
  New-Item -ItemType Directory -Force -Path $Sdk | Out-Null
--Copy-Item -Path (Join-Path $Mp '*') -Destination $Sdk -Recurse -Force
++Copy-Item -Path (Join-Path $SourceRoot '*') -Destination $Sdk -Recurse -Force
  
--if (!(Test-Path (Join-Path $Src 'game/client/hl2mp')) -or !(Test-Path (Join-Path $Src 'game/server/hl2mp'))) {
++if (!(Has-HL2MP $Sdk)) {
    Get-ChildItem -Force $Sdk | Select-Object Mode,Length,Name | Format-Table -AutoSize | Out-File (Join-Path $LogDir 'sdk-root-after-copy.txt')
--  throw "Bootstrapped SDK is missing expected HL2MP folders"
++  throw "Bootstrapped SDK is missing expected HL2MP folders after copy"
  }
  
++"=== SDK root after copy ===" | Out-File (Join-Path $LogDir 'sdk-root-after-copy.txt')
++Get-ChildItem -Force $Sdk | Select-Object Mode,Length,Name | Format-Table -AutoSize | Out-File (Join-Path $LogDir 'sdk-root-after-copy.txt') -Append
++"=== SDK src root after copy ===" | Out-File (Join-Path $LogDir 'sdk-src-root-after-copy.txt')
++Get-ChildItem -Force (Join-Path $Sdk 'src') | Select-Object Mode,Length,Name | Format-Table -AutoSize | Out-File (Join-Path $LogDir 'sdk-src-root-after-copy.txt') -Append
++
  Say "SDK bootstrapped successfully"