Shared machine-number helper, site-config for OpenText + PreInstall, placeholder type dirs

Three optimization batches from the pipeline audit:

1. Shared Update-MachineNumber.ps1 helper (lib/)
   Extracts duplicated machine-number update logic from Configure-PC.ps1,
   Check-MachineNumber.ps1, and Set-MachineNumber.ps1 into a shared
   dot-sourceable helper at Shopfloor/lib/Update-MachineNumber.ps1.

   Exports:
     Get-CurrentMachineNumber → @{ Udc = $string; Ednc = $string }
     Update-MachineNumber -NewNumber <n> [-Site <s>] → @{ UdcUpdated; EdncUpdated; Errors }

   All three consumers now dot-source the helper instead of duplicating
   ~50 lines each. Set-MachineNumber.ps1 also migrated from inline
   Get-SiteConfig to dot-sourcing Get-PCProfile.ps1 for consistency.

2. Site-config integration for remaining scripts
   Setup-OpenText.ps1: exclude lists (profiles + shortcuts) now read from
     site-config.json opentext section, falling back to West Jefferson
     defaults. Inline Get-SiteConfig since the script runs from
     C:\PreInstall\installers\opentext\ (can't dot-source Get-PCProfile).

   00-PreInstall-MachineApps.ps1: after parsing preinstall.json, scans
     InstallArgs for "West Jefferson" and replaces with site-config
     siteName if different. Inline Get-SiteConfig for same reason.

3. Placeholder type-specific directories
   Created skeleton 01-Setup-*.ps1 scripts for all PC types so the
   directory structure is in place and Run-ShopfloorSetup's type-specific
   loop has something to iterate over:
     Genspect/01-Setup-Genspect.ps1
     Keyence/01-Setup-Keyence.ps1
     WaxAndTrace/01-Setup-WaxAndTrace.ps1
     Lab/01-Setup-Lab.ps1
   Each logs a "no type-specific apps configured yet" banner and exits.
   Fill in app installs when details are finalized; for share-based
   installs, copy the CMM/01-Setup-CMM.ps1 pattern.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

playbook/shopfloor-setup/Shopfloor/00-PreInstall-MachineApps.ps1

@@ -17,6 +17,19 @@ $installerDir  = Join-Path $preInstallDir "installers"
 $logDir        = "C:\Logs\PreInstall"
 $logFile       = Join-Path $logDir "install.log"
 
+# --- Inline site-config reader (same pattern as Setup-OpenText.ps1; this script
+# runs from C:\Enrollment\shopfloor-setup\Shopfloor\ but Get-PCProfile.ps1 may
+# not be available yet, so keep the lookup self-contained) ---
+function Get-SiteConfig {
+    $configPath = 'C:\Enrollment\site-config.json'
+    if (-not (Test-Path $configPath)) { return $null }
+    try {
+        return Get-Content $configPath -Raw | ConvertFrom-Json
+    } catch {
+        return $null
+    }
+}
+
 # --- Setup logging ---
 # IMPORTANT: do NOT wipe the log on each run. The runner can get killed by an
 # installer-triggered reboot mid-execution. On the next autologon, the dispatcher
@@ -102,6 +115,20 @@ if (-not $config.Applications) {
 Write-PreInstallLog "Staged installer dir: $installerDir"
 Write-PreInstallLog "Found $($config.Applications.Count) app entries in preinstall.json"
 
+# --- Site-name override: replace "West Jefferson" in InstallArgs if site-config says otherwise ---
+$siteConfig = Get-SiteConfig
+if ($siteConfig -and $siteConfig.siteName -and $siteConfig.siteName -ne 'West Jefferson') {
+    Write-PreInstallLog "Site config loaded - siteName: $($siteConfig.siteName)"
+    foreach ($app in $config.Applications) {
+        if ($app.InstallArgs -and $app.InstallArgs -match 'West Jefferson') {
+            $app.InstallArgs = $app.InstallArgs -replace 'West Jefferson', $siteConfig.siteName
+            Write-PreInstallLog "  Overrode site name in $($app.Name) args: $($app.InstallArgs)"
+        }
+    }
+} else {
+    Write-PreInstallLog "No site-config override for siteName (using defaults in preinstall.json)"
+}
+
 # --- Detection helper (mirrors Simple-Install.ps1's Test-ApplicationInstalled) ---
 function Test-AppInstalled {
     param($App)