misc: One additional usage of Lock & comment why it's not used on the others.

src/Ryujinx.Cpu/Jit/HostTracked/AddressSpacePartitionAllocator.cs

@@ -115,6 +115,9 @@ namespace Ryujinx.Cpu.Jit.HostTracked
             }
 
             private readonly AddressIntrusiveRedBlackTree<Mapping> _mappingTree;
+            
+            // type is not Lock due to the unique usage of this mechanism,
+            // an arbitrary object is used as the lock passed in by constructor.
             private readonly object _lock;
 
             public Block(MemoryTracking tracking, Func<ulong, ulong> readPtCallback, MemoryBlock memory, ulong size, object locker) : base(memory, size)
@@ -174,6 +177,9 @@ namespace Ryujinx.Cpu.Jit.HostTracked
 
         private readonly MemoryTracking _tracking;
         private readonly Func<ulong, ulong> _readPtCallback;
+        
+        // type is not Lock due to the unique usage of this mechanism,
+        // an arbitrary object is used as the lock passed in by constructor.
         private readonly object _lock;
 
         public AddressSpacePartitionAllocator(

src/Ryujinx.HLE/HOS/Kernel/Common/KResourceLimit.cs

@@ -15,7 +15,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Common
         private readonly long[] _current2;
         private readonly long[] _peak;
 
-        private readonly object _lock = new();
+        private readonly Lock _lock = new();
 
         private readonly LinkedList<KThread> _waitingThreads;
 

src/Ryujinx.HLE/HOS/Kernel/Threading/KCriticalSection.cs

@@ -5,10 +5,10 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
     class KCriticalSection
     {
         private readonly KernelContext _context;
-        private readonly object _lock = new();
         private int _recursionCount;
         
-        public object Lock => _lock;
+        // type is not Lock due to Monitor class usage
+        public object Lock { get; } = new();
 
         public KCriticalSection(KernelContext context)
         {
@@ -17,7 +17,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
 
         public void Enter()
         {
-            Monitor.Enter(_lock);
+            Monitor.Enter(Lock);
 
             _recursionCount++;
         }
@@ -33,7 +33,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
             {
                 ulong scheduledCoresMask = KScheduler.SelectThreads(_context);
 
-                Monitor.Exit(_lock);
+                Monitor.Exit(Lock);
 
                 KThread currentThread = KernelStatic.GetCurrentThread();
                 bool isCurrentThreadSchedulable = currentThread != null && currentThread.IsSchedulable;
@@ -56,7 +56,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
             }
             else
             {
-                Monitor.Exit(_lock);
+                Monitor.Exit(Lock);
             }
         }
     }

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);
+            return (new AmiiboMasterKey(dataBin), new AmiiboMasterKey(tagBin));
-            AmiiboMasterKey tagKey = new AmiiboMasterKey(tagBin);
-
-            return (dataKey, tagKey);
         }
     }
 }

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/Impl/EventFileDescriptor.cs

@@ -10,6 +10,7 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl
         private ulong _value;
         private readonly EventFdFlags _flags;
 
+        // type is not Lock due to Monitor class usage
         private readonly object _lock = new();
 
         public bool Blocking { get => !_flags.HasFlag(EventFdFlags.NonBlocking); set => throw new NotSupportedException(); }

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)