Add an option for showing file extensions

lib/modules/windows.nix

@@ -19,6 +19,12 @@
             };
           };
 
+          showFileExt = mkOption {
+            type = types.bool;
+            description = "A value indicating whether file extensions should be displayed in Windows Explorer.";
+            default = true;
+          };
+
           legacyIconSpacing = mkEnableOption "legacy icon spacing" // {
             default = true;
           };

scripts/Windows/Software/Windows/Manage.ps1

@@ -124,6 +124,16 @@ Start-SoftwareInstaller @PSBoundParameters `
             $startLayout | ConvertTo-Json -Compress | Set-Content "$env:SystemDrive\Users\Default\AppData\Local\Microsoft\Windows\Shell\LayoutModification.json";
         }
 
+        if (Get-WinConfig "showFileExt") {
+            Edit-DefaultUserKey {
+                param (
+                    [RegistryKey] $Key
+                )
+
+                Set-ItemProperty "$($Key.PSPath)\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" -Name "HideFileExt" -Value 0 -Type "DWord";
+            };
+        }
+
         Pop-Location;
         Remove-Item -Recurse $dir;
     };