Kiosk bootstrap: look for the installer where staging actually puts it

The bootstrap looked for C:\Enrollment\kiosk\Install-ShopdbKiosk.ps1, but
startnet copies the type-specific tree to
C:\Enrollment\shopfloor-setup\gea-shopfloor-display\ - so the payload lands
beside the bootstrap, not under C:\Enrollment.

As written it would have logged "Installer not staged" on every 15-minute cycle
and never installed anything, with no error anywhere. Exactly the silent-failure
shape this whole day has been about, and it would have looked like the API being
unreachable.

Resolves via a -KioskRoot parameter defaulting to kiosk\ next to the script, so
the bootstrap and its payload travel together regardless of where the tree is
staged. display-type.txt still comes from EnrollmentRoot, which is correct - that
one really is at C:\Enrollment.

playbook/shopfloor-setup/gea-shopfloor-display/Install-ShopdbKiosk-WhenOnline.ps1

@@ -25,9 +25,9 @@
 .PARAMETER EnrollmentRoot
     Where imaging staged things. Expects:
         <root>\display-type.txt          Dashboard | Lobby | 3DPrintRoom
-        <root>\kiosk\Install-ShopdbKiosk.ps1
-        <root>\kiosk\shopdb-key.txt      (optional) line1 collector.ingest PAT,
-                                         line2 geenforce.fetch PAT
+    and, beside this script (see -KioskRoot):
+        kiosk\Install-ShopdbKiosk.ps1
+        kiosk\shopdb-key.txt            (optional) labelled: collector=..., fetch=...
 
 .PARAMETER TaskName
     The scheduled task to remove once installation succeeds.
@@ -42,6 +42,15 @@
 [CmdletBinding()]
 param(
     [string]$EnrollmentRoot = 'C:\Enrollment',
+
+    # Where the staged installer and key live. Defaults to kiosk\ NEXT TO THIS
+    # SCRIPT, not under EnrollmentRoot: startnet copies the whole type-specific
+    # tree to
+    #   C:\Enrollment\shopfloor-setup\gea-shopfloor-display\
+    # so the payload arrives beside this file, not at C:\Enrollment\kiosk.
+    # Getting this wrong is silent - the bootstrap just logs "not staged" every
+    # cycle and never installs anything.
+    [string]$KioskRoot = (Join-Path $PSScriptRoot 'kiosk'),
     [string]$BaseUrl        = 'https://tsgwp00525.wjs.geaerospace.net/shopdb',
     [string]$TaskName       = 'ShopDB Kiosk Bootstrap',
     [int]$TimeoutSeconds    = 30
@@ -93,7 +102,7 @@ if ($displayType -notin @('Dashboard','Lobby','3DPrintRoom')) {
 }
 Log "DisplayType: $displayType"
 
-$installer = Join-Path $EnrollmentRoot 'kiosk\Install-ShopdbKiosk.ps1'
+$installer = Join-Path $KioskRoot 'Install-ShopdbKiosk.ps1'
 if (-not (Test-Path $installer)) {
     Log "Installer not staged at $installer. Leaving armed."
     return
@@ -118,7 +127,7 @@ try {
 }
 
 # --- keys ----------------------------------------------------------------
-$keyFile = Join-Path $EnrollmentRoot 'kiosk\shopdb-key.txt'
+$keyFile = Join-Path $KioskRoot 'shopdb-key.txt'
 $collectorKey = ''
 $fetchToken   = ''
 if (Test-Path $keyFile) {