Prepare scanner branch for merge

scripts/dev-admin-start.ps1

@@ -1,5 +1,6 @@
 param(
-  [string]$ProjectRoot
+  [string]$ProjectRoot,
+  [string]$OcrWorkers = ""
 )
 
 # Mit -NoExit gestartet: dieses Fenster bleibt immer offen (siehe dev-admin.cmd),
@@ -20,6 +21,10 @@ try {
 
   Write-Host "Projekt: $project"
   Write-Host "Admin-Log: $logPath"
+  if ($OcrWorkers) {
+    $env:GAA_OCR_WORKERS = $OcrWorkers
+    Write-Host "GAA_OCR_WORKERS: $env:GAA_OCR_WORKERS"
+  }
 
   # A UAC-elevated process gets its environment rebuilt fresh from the
   # registry; it does NOT inherit PATH edits that only exist in the calling