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/lib/Update-MachineNumber.ps1

@@ -0,0 +1,103 @@
+# Update-MachineNumber.ps1 - Shared helper for reading and updating the
+# machine number in UDC and eDNC. Dot-source from any script that needs
+# machine-number operations:
+#
+#   . "$PSScriptRoot\lib\Update-MachineNumber.ps1"   (from Shopfloor\ scripts)
+#   . "$PSScriptRoot\..\Shopfloor\lib\Update-MachineNumber.ps1" (from Standard\ scripts)
+#   . "$PSScriptRoot\Update-MachineNumber.ps1"       (from lib\ scripts)
+#
+# Exported functions:
+#   Get-CurrentMachineNumber  - returns @{ Udc = $string_or_null; Ednc = $string_or_null }
+#   Update-MachineNumber      - updates both, returns @{ UdcUpdated = $bool; EdncUpdated = $bool; Errors = @() }
+#
+# Both handle missing files/keys gracefully (app not installed = skip, not error).
+
+$script:UdcSettingsPath = 'C:\ProgramData\UDC\udc_settings.json'
+$script:UdcExePath      = 'C:\Program Files\UDC\UDC.exe'
+$script:EdncRegPath     = 'HKLM:\SOFTWARE\WOW6432Node\GE Aircraft Engines\DNC\General'
+
+function Get-CurrentMachineNumber {
+    <#
+    .SYNOPSIS
+        Reads the current machine number from UDC settings JSON and eDNC registry.
+    .OUTPUTS
+        Hashtable with keys Udc ($string or $null) and Ednc ($string or $null).
+    #>
+    $result = @{ Udc = $null; Ednc = $null }
+
+    if (Test-Path $script:UdcSettingsPath) {
+        try {
+            $json = Get-Content $script:UdcSettingsPath -Raw | ConvertFrom-Json
+            $result.Udc = $json.GeneralSettings.MachineNumber
+        } catch {}
+    }
+
+    if (Test-Path $script:EdncRegPath) {
+        try {
+            $result.Ednc = (Get-ItemProperty -Path $script:EdncRegPath -Name MachineNo -ErrorAction Stop).MachineNo
+        } catch {}
+    }
+
+    return $result
+}
+
+function Update-MachineNumber {
+    <#
+    .SYNOPSIS
+        Updates UDC + eDNC machine number in one step. Stops UDC before writing,
+        relaunches after.
+    .PARAMETER NewNumber
+        The new machine number (digits only - caller validates).
+    .PARAMETER Site
+        Site name passed to UDC.exe -site argument. Defaults to 'West Jefferson'.
+    .OUTPUTS
+        Hashtable: @{ UdcUpdated = $bool; EdncUpdated = $bool; Errors = @() }
+    #>
+    param(
+        [Parameter(Mandatory)]
+        [string]$NewNumber,
+
+        [string]$Site = 'West Jefferson'
+    )
+
+    $out = @{ UdcUpdated = $false; EdncUpdated = $false; Errors = @() }
+
+    # --- Stop UDC before editing its JSON (avoid stale shutdown write) ---
+    Get-Process UDC -ErrorAction SilentlyContinue | ForEach-Object {
+        try { $_.Kill(); $_.WaitForExit(5000) | Out-Null } catch {}
+    }
+    Start-Sleep -Seconds 1
+
+    # --- Update UDC settings JSON ---
+    if (Test-Path $script:UdcSettingsPath) {
+        try {
+            $json = Get-Content $script:UdcSettingsPath -Raw | ConvertFrom-Json
+            $json.GeneralSettings.MachineNumber = $NewNumber
+            $json | ConvertTo-Json -Depth 99 | Set-Content -Path $script:UdcSettingsPath -Encoding UTF8
+            $out.UdcUpdated = $true
+        } catch {
+            $out.Errors += "UDC update failed: $_"
+        }
+    }
+
+    # --- Update eDNC registry ---
+    if (Test-Path $script:EdncRegPath) {
+        try {
+            Set-ItemProperty -Path $script:EdncRegPath -Name MachineNo -Value $NewNumber -Type String -Force
+            $out.EdncUpdated = $true
+        } catch {
+            $out.Errors += "eDNC update failed: $_"
+        }
+    }
+
+    # --- Relaunch UDC with new args ---
+    if ((Test-Path $script:UdcExePath) -and $out.UdcUpdated) {
+        try {
+            Start-Process -FilePath $script:UdcExePath -ArgumentList @('-site', "`"$Site`"", '-machine', $NewNumber)
+        } catch {
+            $out.Errors += "UDC relaunch failed: $_"
+        }
+    }
+
+    return $out
+}