chore: small cleanups

src/Ryujinx.HLE/HOS/Services/Nfc/AmiiboDecryption/AmiiboBinReader.cs

@@ -333,7 +333,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.AmiiboDecryption
             return Path.Combine(AppDataManager.KeysDirPath, "key_retail.bin");
         }
 
-        public static bool HasKeyRetailBinPath => File.Exists(GetKeyRetailBinPath());
+        public static bool HasAmiiboKeyFile => File.Exists(GetKeyRetailBinPath());
 
         
         public static DateTime DateTimeFromTag(ushort value)

src/Ryujinx.HLE/HOS/Services/Nfc/AmiiboDecryption/AmiiboDump.cs

@@ -36,7 +36,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.AmiiboDecryption
 
         private byte[] DeriveKey(AmiiboMasterKey key, bool deriveAes, out byte[] derivedAesKey, out byte[] derivedAesIv)
         {
-            List<byte> seed = new List<byte>();
+            List<byte> seed = [];
 
             // Start with the type string (14 bytes)
             seed.AddRange(key.TypeString);

src/Ryujinx.HLE/HOS/Services/Nfc/AmiiboDecryption/AmiiboMasterKey.cs

@@ -33,10 +33,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.AmiiboDecryption
             byte[] dataBin = combinedBin.Take(80).ToArray();
             byte[] tagBin = combinedBin.Skip(80).Take(80).ToArray();
 
-            AmiiboMasterKey dataKey = new AmiiboMasterKey(dataBin);
-            AmiiboMasterKey tagKey = new AmiiboMasterKey(tagBin);
-
-            return (dataKey, tagKey);
+            return (new AmiiboMasterKey(dataBin), new AmiiboMasterKey(tagBin));
         }
     }
 }

src/Ryujinx.UI.Common/Helper/OpenHelper.cs

@@ -1,3 +1,4 @@
+using Gommon;
 using Ryujinx.Common.Logging;
 using System;
 using System.Diagnostics;
@@ -34,6 +35,8 @@ namespace Ryujinx.UI.Common.Helper
             }
         }
 
+        public static void OpenFolder(FilePath path) => OpenFolder(path.Path);
+
         public static void LocateFile(string path)
         {
             if (File.Exists(path))

src/Ryujinx/UI/ViewModels/MainWindowViewModel.cs

@@ -334,7 +334,7 @@ namespace Ryujinx.Ava.UI.ViewModels
             }
         }
 
-        public bool CanScanAmiiboBinaries => AmiiboBinReader.HasKeyRetailBinPath;
+        public bool CanScanAmiiboBinaries => AmiiboBinReader.HasAmiiboKeyFile;
         
         public bool ShowLoadProgress
         {

src/Ryujinx/UI/Views/Main/MainMenuBarView.axaml.cs

@@ -178,7 +178,7 @@ namespace Ryujinx.Ava.UI.Views.Main
         private void ScanBinAmiiboMenuItem_AttachedToVisualTree(object sender, VisualTreeAttachmentEventArgs e)
         {
             if (sender is MenuItem)
-                ViewModel.IsAmiiboBinRequested = ViewModel.IsAmiiboRequested && AmiiboBinReader.HasKeyRetailBinPath;
+                ViewModel.IsAmiiboBinRequested = ViewModel.IsAmiiboRequested && AmiiboBinReader.HasAmiiboKeyFile;
         }
 
         private async void InstallFileTypes_Click(object sender, RoutedEventArgs e)