2V2-e.1: 3D draw-command channel — recording D3D8 device, StateManager, GrpBase, camera

EterLib/StateManager.cpp and GrpBase.cpp ported verbatim. CGraphicDevice::Create builds a platform
IDirect3DDevice8 that keeps the device state and records every Draw* call as a Render3DDraw
(vertices decoded by FVF, strips/fans expanded, textures, world/view/proj, blend/depth/light state).
The 40250 camera (__UpdateCamera, SetCenterPosition, ...) and the Process order
(__UpdateCamera -> OnCameraUpdate -> OnUIUpdate -> Begin/SetInterfaceRenderState/OnUIRender/End)
are in place; CScreen Begin/End, CPythonGraphic render states and CCullingManager::Process matrix
updates are verbatim. port.login_flow asserts a textured, lit character draw under the RH
perspective with every vertex on screen; offline and live pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

extension/src/platform/EterLib/RecordingDevice.h

@@ -0,0 +1,7 @@
+#pragma once
+// The platform's IDirect3DDevice8: CGraphicDevice::Create hands it to CStateManager, which keeps
+// 40250's state caching; the device remembers the state it is given and turns every draw call into a
+// Render3DDraw (RenderCommands3D.h) for the Godot renderer.
+#include "EterLib/StdAfx.h"
+
+IDirect3DDevice8* MtCreateRecordingDevice(int width, int height);