Add live debugger frontend and mutex stall recovery (#383)

src/SharpEmu.Core/Cpu/CpuExecutionOptions.cs

@@ -1,15 +1,26 @@
 // Copyright (C) 2026 SharpEmu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+using SharpEmu.Core.Cpu.Debugging;
+
 namespace SharpEmu.Core.Cpu;
 
 public readonly struct CpuExecutionOptions
 {
     public bool EnableDisasmDiagnostics { get; init; }
-    
+
     public CpuExecutionEngine CpuEngine { get; init; }
 
     public bool StrictDynlibResolution { get; init; }
 
     public int ImportTraceLimit { get; init; }
+
+    /// <summary>
+    /// An optional debugger attached to this execution session. When set, the
+    /// dispatcher notifies it at each frame boundary via
+    /// <see cref="ICpuDebugHook.OnFrameEnter"/> / <see cref="ICpuDebugHook.OnFrameExit"/>.
+    /// Null when no debugger is attached, which is the default and imposes no
+    /// runtime cost.
+    /// </summary>
+    public ICpuDebugHook? DebugHook { get; init; }
 }