port 4-a: text input through CPythonIME (login typed, in-game chat)

- UserInterface/PythonIME(+Module) ported verbatim; ime module stubs removed, initime() after initdbg()
- EterLib/IME.cpp in platform/: 40250 buffer/WMChar bodies, IMM/TSF processors no-op; committed
  multi-byte text via PythonBoot::UIChar emulating GCS_RESULTSTR
- GameApplicationAdapter RunIME* -> CWindowManager; Godot keys -> ui_ime_key/ui_char
- port.login_flow/login_live type the account through the IME; chat CG_CHAT round-trip on the fake server
- python_game_render_test logs in with Godot key events

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

extension/src/port/UserInterface/PythonIME.cpp

@@ -0,0 +1,119 @@
+#include "StdAfx.h"
+#include "PythonIME.h"
+#include "AbstractApplication.h"
+
+CPythonIME::CPythonIME()
+: CIME()
+{
+	ms_pEvent = this;
+}
+
+CPythonIME::~CPythonIME()
+{
+	Tracen("PythonIME Clear");
+}
+
+void CPythonIME::Create(HWND hWnd)
+{
+	Initialize(hWnd);
+}
+
+void CPythonIME::MoveLeft()
+{
+	DecCurPos();
+}
+
+void CPythonIME::MoveRight()
+{
+	IncCurPos();
+}
+
+void CPythonIME::MoveHome()
+{
+	ms_curpos = 0;
+}
+
+void CPythonIME::MoveEnd()
+{
+	ms_curpos = ms_lastpos;
+}
+
+void CPythonIME::SetCursorPosition(int iPosition)
+{
+	SetCurPos(iPosition);
+}
+
+void CPythonIME::Delete()
+{
+	DelCurPos();
+}
+
+void CPythonIME::OnUpdate()
+{
+	IAbstractApplication::GetSingleton().RunIMEUpdate();
+}
+
+void CPythonIME::OnTab()
+{
+	IAbstractApplication::GetSingleton().RunIMETabEvent();
+}
+
+void CPythonIME::OnReturn()
+{
+	IAbstractApplication::GetSingleton().RunIMEReturnEvent();
+}
+
+void CPythonIME::OnEscape()
+{
+//	IAbstractApplication::GetSingleton().RunIMEEscapeEvent();
+}
+
+bool CPythonIME::OnWM_CHAR( WPARAM wParam, LPARAM lParam )
+{
+	unsigned char c = (unsigned char)(wParam & 0xff); // PORT: functional cast of a two-word type is MSVC-only.
+
+	switch (c) 
+	{
+	case VK_RETURN:
+		OnReturn();
+		return true;
+
+	case VK_TAB:
+		if(ms_bCaptureInput == false)
+			return 0;
+		OnTab();
+		return true;
+
+	case VK_ESCAPE:
+		if(ms_bCaptureInput == false)
+			return 0;
+		OnEscape();
+		return true;
+	}
+	return false;
+}
+
+void CPythonIME::OnChangeCodePage()
+{
+	IAbstractApplication::GetSingleton().RunIMEChangeCodePage();
+}
+
+void CPythonIME::OnOpenCandidateList()
+{
+	IAbstractApplication::GetSingleton().RunIMEOpenCandidateListEvent();
+}
+
+void CPythonIME::OnCloseCandidateList()
+{
+	IAbstractApplication::GetSingleton().RunIMECloseCandidateListEvent();
+}
+
+void CPythonIME::OnOpenReadingWnd()
+{
+	IAbstractApplication::GetSingleton().RunIMEOpenReadingWndEvent();
+}
+
+void CPythonIME::OnCloseReadingWnd()
+{
+	IAbstractApplication::GetSingleton().RunIMECloseReadingWndEvent();
+}