Refresh QR code after AAD join detected

The QR code text was built once at script startup. If the device wasn't
AAD-joined yet, it showed "Device not yet Azure AD joined" forever -
even after Phase 1 checks passed. Now regenerates Build-QRCodeText
when Phase1.AzureAdJoined transitions to true.

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

playbook/shopfloor-setup/Shopfloor/lib/Monitor-IntuneProgress.ps1

@@ -636,6 +636,7 @@ function Invoke-RebootPrompt {
 # ============================================================================
 try {
     $qrText = Build-QRCodeText
+    $qrRefreshed = [bool]($qrText -notmatch 'not yet Azure AD joined')
     Invoke-IntuneSync
     $lastSync      = Get-Date
     $nextRetrigger = $lastSync.AddMinutes($RetriggerMinutes)
@@ -643,6 +644,14 @@ try {
     while ($true) {
         $snap = Get-Snapshot
 
+        # Refresh QR code once AAD join is detected (the initial build
+        # may have run before enrollment completed, showing "not yet
+        # Azure AD joined" even after Phase 1 passes).
+        if (-not $qrRefreshed -and $snap.Phase1.AzureAdJoined) {
+            $qrText = Build-QRCodeText
+            $qrRefreshed = $true
+        }
+
         Clear-Host
         Write-Host "=== Monitor running - transcript: $transcriptPath ===" -ForegroundColor DarkGray
         foreach ($l in (Format-Snapshot -Snap $snap -LastSync $lastSync -NextRetrigger $nextRetrigger)) {