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>

Native/DecalSupportLibraries/Attic/DlgProxy.cpp

@@ -0,0 +1,80 @@
+// DlgProxy.cpp : implementation file
+//
+
+#include "stdafx.h"
+#include "DecalSupportLibraries.h"
+#include "DlgProxy.h"
+#include "DecalSupportLibrariesDlg.h"
+
+#ifdef _DEBUG
+#define new DEBUG_NEW
+#endif
+
+
+// CDecalSupportLibrariesDlgAutoProxy
+
+IMPLEMENT_DYNCREATE(CDecalSupportLibrariesDlgAutoProxy, CCmdTarget)
+
+CDecalSupportLibrariesDlgAutoProxy::CDecalSupportLibrariesDlgAutoProxy()
+{
+	EnableAutomation();
+	
+	// To keep the application running as long as an automation 
+	//	object is active, the constructor calls AfxOleLockApp.
+	AfxOleLockApp();
+
+	// Get access to the dialog through the application's
+	//  main window pointer.  Set the proxy's internal pointer
+	//  to point to the dialog, and set the dialog's back pointer to
+	//  this proxy.
+	ASSERT (AfxGetApp()->m_pMainWnd != NULL);
+	ASSERT_VALID (AfxGetApp()->m_pMainWnd);
+	ASSERT_KINDOF(CDecalSupportLibrariesDlg, AfxGetApp()->m_pMainWnd);
+	m_pDialog = reinterpret_cast<CDecalSupportLibrariesDlg*>(AfxGetApp()->m_pMainWnd);
+	m_pDialog->m_pAutoProxy = this;
+}
+
+CDecalSupportLibrariesDlgAutoProxy::~CDecalSupportLibrariesDlgAutoProxy()
+{
+	// To terminate the application when all objects created with
+	// 	with automation, the destructor calls AfxOleUnlockApp.
+	//  Among other things, this will destroy the main dialog
+	if (m_pDialog != NULL)
+		m_pDialog->m_pAutoProxy = NULL;
+	AfxOleUnlockApp();
+}
+
+void CDecalSupportLibrariesDlgAutoProxy::OnFinalRelease()
+{
+	// When the last reference for an automation object is released
+	// OnFinalRelease is called.  The base class will automatically
+	// deletes the object.  Add additional cleanup required for your
+	// object before calling the base class.
+
+	CCmdTarget::OnFinalRelease();
+}
+
+BEGIN_MESSAGE_MAP(CDecalSupportLibrariesDlgAutoProxy, CCmdTarget)
+END_MESSAGE_MAP()
+
+BEGIN_DISPATCH_MAP(CDecalSupportLibrariesDlgAutoProxy, CCmdTarget)
+END_DISPATCH_MAP()
+
+// Note: we add support for IID_IDecalSupportLibraries to support typesafe binding
+//  from VBA.  This IID must match the GUID that is attached to the 
+//  dispinterface in the .IDL file.
+
+// {586E5AC4-7A88-4CFA-B075-2D7F0E70250D}
+static const IID IID_IDecalSupportLibraries =
+{ 0x586E5AC4, 0x7A88, 0x4CFA, { 0xB0, 0x75, 0x2D, 0x7F, 0xE, 0x70, 0x25, 0xD } };
+
+BEGIN_INTERFACE_MAP(CDecalSupportLibrariesDlgAutoProxy, CCmdTarget)
+	INTERFACE_PART(CDecalSupportLibrariesDlgAutoProxy, IID_IDecalSupportLibraries, Dispatch)
+END_INTERFACE_MAP()
+
+// The IMPLEMENT_OLECREATE2 macro is defined in StdAfx.h of this project
+// {29FC66D6-DFC1-45D0-87AD-52D44949DCBC}
+IMPLEMENT_OLECREATE2(CDecalSupportLibrariesDlgAutoProxy, "DecalSupportLibraries.Application", 0x29fc66d6, 0xdfc1, 0x45d0, 0x87, 0xad, 0x52, 0xd4, 0x49, 0x49, 0xdc, 0xbc)
+
+
+// CDecalSupportLibrariesDlgAutoProxy message handlers