Initial commit: Complete open-source Decal rebuild

All 5 phases of the open-source Decal rebuild:

Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil)
Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs
  - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters
  - Decal.Core, DecalControls, DecalRender, D3DService
Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL
Phase 4: DenAgent WinForms tray application
Phase 5: WiX installer and build script

25 C# projects building with 0 errors.
Native C++ projects require VS 2022 + Windows SDK (x86).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Managed/Decal.Adapter/Decal.Adapter.Wrappers/RenderServiceWrapper.cs

@@ -0,0 +1,132 @@
+using System;
+using System.ComponentModel;
+using System.Drawing;
+using System.Runtime.InteropServices;
+using Decal.Adapter.Support;
+using Decal.Interop.Core;
+using Decal.Interop.Inject;
+using Decal.Interop.Render;
+
+namespace Decal.Adapter.Wrappers;
+
+[CLSCompliant(true)]
+public class RenderServiceWrapper : MarshalByRefObject, IDisposable
+{
+	private RenderService internalRender;
+
+	private bool isDisposed;
+
+	private EventHandler myDeviceLost;
+
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public object UnsafeDevice => internalRender.Device;
+
+	internal event EventHandler DeviceLost
+	{
+		add
+		{
+			myDeviceLost = (EventHandler)Delegate.Combine(myDeviceLost, value);
+		}
+		remove
+		{
+			myDeviceLost = (EventHandler)Delegate.Combine(myDeviceLost, value);
+		}
+	}
+
+	internal RenderServiceWrapper(RenderService render)
+	{
+		internalRender = render;
+		internalRender.DeviceLost += internalRender_DeviceLost;
+	}
+
+	~RenderServiceWrapper()
+	{
+		Dispose(disposing: false);
+	}
+
+	private void internalRender_DeviceLost()
+	{
+		if (myDeviceLost != null)
+		{
+			myDeviceLost(this, new EventArgs());
+		}
+	}
+
+	private void myHUD_Disposing(object sender, EventArgs e)
+	{
+		if (sender is Hud hud)
+		{
+			RemoveHud(hud);
+			hud.Disposing -= myHUD_Disposing;
+		}
+	}
+
+	public Background CreateBackground(Rectangle region)
+	{
+		return UnsafeCreateBackground(Util.toTagRECT(region));
+	}
+
+	public Hud CreateHud(Rectangle region)
+	{
+		return UnsafeCreateHud(Util.toTagRECT(region));
+	}
+
+	public void RemoveHud(Hud hud)
+	{
+		if (hud == null)
+		{
+			throw new ArgumentNullException("hud");
+		}
+		internalRender.RemoveHUD(hud.Underlying);
+	}
+
+	[CLSCompliant(false)]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public Background UnsafeCreateBackground(tagRECT pRegion)
+	{
+		return new Background(internalRender.CreateBackground(ref pRegion));
+	}
+
+	[CLSCompliant(false)]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public Hud UnsafeCreateHud(tagRECT pRegion)
+	{
+		Hud hud = new Hud(internalRender.CreateHUD(ref pRegion));
+		hud.Disposing += myHUD_Disposing;
+		return hud;
+	}
+
+	[CLSCompliant(false)]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public Background EncapsulateBackground(tagPOINT coordinates, object surface)
+	{
+		return new Background(internalRender.EncapsulateBackground(ref coordinates, surface));
+	}
+
+	[CLSCompliant(false)]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public Hud EncapsulateHud(tagPOINT coordinates, object surface)
+	{
+		return new Hud(internalRender.EncapsulateHUD(ref coordinates, surface));
+	}
+
+	public void Dispose()
+	{
+		Dispose(disposing: true);
+		GC.SuppressFinalize(this);
+	}
+
+	protected virtual void Dispose(bool disposing)
+	{
+		if (!isDisposed && disposing)
+		{
+			internalRender.DeviceLost -= internalRender_DeviceLost;
+		}
+		if (internalRender != null)
+		{
+			Marshal.ReleaseComObject(internalRender);
+		}
+		internalRender = null;
+		isDisposed = true;
+	}
+}