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/NotebookWrapper.cs

@@ -0,0 +1,117 @@
+using System;
+using Decal.Interop.Controls;
+using Decal.Interop.Inject;
+
+namespace Decal.Adapter.Wrappers;
+
+public class NotebookWrapper : ControlWrapperBase<NotebookClass>
+{
+	private EventHandler<ControlEventArgs> evtDestroy;
+
+	private EventHandler<IndexChangeEventArgs> evtChange;
+
+	private PageTextIndexer myPageIndex;
+
+	public int ActiveTab
+	{
+		get
+		{
+			return base.Control.ActiveTab;
+		}
+		set
+		{
+			base.Control.ActiveTab = value;
+		}
+	}
+
+	public PageTextIndexer PageText => myPageIndex;
+
+	public event EventHandler<ControlEventArgs> Destroy
+	{
+		add
+		{
+			if (evtDestroy == null)
+			{
+				base.Control.Destroy += DestroyEvent;
+			}
+			evtDestroy = (EventHandler<ControlEventArgs>)Delegate.Combine(evtDestroy, value);
+		}
+		remove
+		{
+			evtDestroy = (EventHandler<ControlEventArgs>)Delegate.Remove(evtDestroy, value);
+			if (evtDestroy == null)
+			{
+				base.Control.Destroy -= DestroyEvent;
+			}
+		}
+	}
+
+	public event EventHandler<IndexChangeEventArgs> Change
+	{
+		add
+		{
+			if (evtChange == null)
+			{
+				base.Control.Change += ChangeEvent;
+			}
+			evtChange = (EventHandler<IndexChangeEventArgs>)Delegate.Combine(evtChange, value);
+		}
+		remove
+		{
+			evtChange = (EventHandler<IndexChangeEventArgs>)Delegate.Remove(evtChange, value);
+			if (evtChange == null)
+			{
+				base.Control.Change -= ChangeEvent;
+			}
+		}
+	}
+
+	public override void Initialize(object control)
+	{
+		base.Initialize(control);
+		myPageIndex = new PageTextIndexer(base.Control);
+	}
+
+	protected override void Dispose(bool disposing)
+	{
+		if (disposing)
+		{
+			if (evtDestroy != null)
+			{
+				evtDestroy = (EventHandler<ControlEventArgs>)Delegate.Remove(evtDestroy, evtDestroy);
+				base.Control.Destroy -= DestroyEvent;
+			}
+			if (evtChange != null)
+			{
+				evtChange = (EventHandler<IndexChangeEventArgs>)Delegate.Remove(evtChange, evtChange);
+				base.Control.Change -= ChangeEvent;
+			}
+			if (myPageIndex != null)
+			{
+				myPageIndex.Dispose();
+			}
+		}
+		base.Dispose(disposing);
+	}
+
+	public void AddPage(string text, IControl control)
+	{
+		base.Control.AddPage(text, control);
+	}
+
+	private void ChangeEvent(int ID, int Index)
+	{
+		if (evtChange != null)
+		{
+			evtChange(this, new IndexChangeEventArgs(ID, Index));
+		}
+	}
+
+	private void DestroyEvent(int ID)
+	{
+		if (evtDestroy != null)
+		{
+			evtDestroy(this, new ControlEventArgs(ID));
+		}
+	}
+}