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/DecalFilters/Enchantment.cpp

@@ -0,0 +1,106 @@
+// Enchantment.cpp : Implementation of CDecalFiltersApp and DLL registration.
+
+#include "stdafx.h"
+#include "DecalFilters.h"
+#include "Enchantment.h"
+
+/////////////////////////////////////////////////////////////////////////////
+//
+
+STDMETHODIMP Enchantment::get_SpellID(long *pVal)
+{
+	*pVal = SpellID;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_SpellID(long newVal)
+{
+	SpellID = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_Layer(long *pVal)
+{
+	*pVal = Layer;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_Layer(long newVal)
+{
+	Layer = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_TimeRemaining(long *pVal)
+{
+	*pVal = SecondsLeft;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_TimeRemaining(long newVal)
+{
+	SecondsLeft = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_Affected(long *pVal)
+{
+	*pVal = Affected;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_Affected(long newVal)
+{
+	Affected = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_AffectedMask(long *pVal)
+{
+	*pVal = AffectMask;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_AffectedMask(long newVal)
+{
+	AffectMask = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_Family(long *pVal)
+{
+	*pVal = Family;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_Family(long newVal)
+{
+	Family = newVal;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::get_Adjustment(double *pVal)
+{
+	*pVal = Adjustment;
+
+	return S_OK;
+}
+
+STDMETHODIMP Enchantment::put_Adjustment(double newVal)
+{
+	Adjustment = newVal;
+
+	return S_OK;
+}