Restricts manufacturer folder detection to known OEMs

Improves driver folder discovery logic by explicitly defining recognized manufacturer folder names (Dell, HP, Lenovo, Microsoft) instead of treating any root-level folder with children as a manufacturer folder.

Prevents incorrect categorization of non-manufacturer folders at the root level and ensures only legitimate OEM folders are processed for model-specific driver packages.

Refactors control flow to eliminate else block, improving code clarity and maintainability.

FFUDevelopment/WinPEDeployFFUFiles/ApplyFFU.ps1

@@ -1155,6 +1155,7 @@ if ($null -eq $DriverSourcePath) {
         # Build folder list that surfaces Manufacturer\Model entries
         $DriverFolders = Get-ChildItem -Path $DriversPath -Directory
         $driversRootFullPath = (Get-Item -Path $DriversPath).FullName.TrimEnd('\')
+        $manufacturerFolderNames = @('dell','hp','lenovo','microsoft')
         $relativePathResolver = {
             param(
                 [string]$candidatePath,
@@ -1187,8 +1188,13 @@ if ($null -eq $DriverSourcePath) {
             }
         }
         foreach ($driverFolder in $DriverFolders) {
+            $parentIsRoot = $driverFolder.Parent.FullName -eq $driversRootFullPath
+            $folderNameLower = $driverFolder.Name.ToLowerInvariant()
+            $isManufacturerFolder = $parentIsRoot -and ($manufacturerFolderNames -contains $folderNameLower)
+
+            if ($isManufacturerFolder) {
+                # Only manufacturer folders (Dell/HP/Lenovo/Microsoft) should surface child model folders.
                 $childModelFolders = Get-ChildItem -Path $driverFolder.FullName -Directory -ErrorAction SilentlyContinue
-            if (($childModelFolders.Count -gt 0) -and ($driverFolder.Parent.FullName -eq $driversRootFullPath)) {
                 foreach ($modelFolder in $childModelFolders) {
                     if (-not (Test-DriverFolderHasInstallableContent -Path $modelFolder.FullName)) {
                         WriteLog "Skipping driver folder '$($modelFolder.FullName)' because no installable files were found."
@@ -1201,8 +1207,9 @@ if ($null -eq $DriverSourcePath) {
                         RelativePath = $relativePath
                     }
                 }
+                continue
             }
-            else {
+
             if (-not (Test-DriverFolderHasInstallableContent -Path $driverFolder.FullName)) {
                 WriteLog "Skipping driver folder '$($driverFolder.FullName)' because no installable files were found."
                 continue
@@ -1214,7 +1221,6 @@ if ($null -eq $DriverSourcePath) {
                 RelativePath = $relativePath
             }
         }
-        }
 
         $DriverSourcesCount = $DriverSources.Count