Port 2V0 UI Python bindings and app module link surface

extension/src/platform/ScriptLib/PythonBoot.cpp

@@ -3,6 +3,7 @@
 #include "ScriptLib/StdAfx.h"
 #include "ScriptLib/PythonLauncher.h"
 #include "UserInterface/StdAfx.h" // initpack and the rest of the module initializer list
+#include "EterPythonLib/StdAfx.h"
 #include "PythonBoot.h"
 #include "PythonHost.h"
 #include "../EterBase/LogBox.h"
@@ -13,6 +14,7 @@ namespace
 {
 // 40250 has this on Main()'s stack. CPythonLauncher is a CSingleton, so there is still only ever one.
 std::unique_ptr<CPythonLauncher> g_launcher;
+std::unique_ptr<UI::CWindowManager> g_window_manager;
 
 bool fail(std::string* error, const std::string& text)
 {
@@ -55,6 +57,7 @@ bool Start(const char* stdlib_path, std::string* error)
 		Stop();
 		return fail(error, "InstallStdLib(" + stdlib + "): " + stdlib_error);
 	}
+	g_window_manager = std::make_unique<UI::CWindowManager>();
 	return true;
 }
 
@@ -66,10 +69,14 @@ bool RunMainScript(const char* lpCmdLine, std::string* error)
 
 	CPythonLauncher& pyLauncher = *g_launcher;
 
-	// The module initializers, in 40250's order. Everything after initpack (initdbg, initime, initgrp,
-	// initgrpImage, initgrpText, initwndMgr, initudp, initapp, ... initServerStateChecker) is a 2V slice:
-	// system.py stops at the first import of one of them, today `app`.
+	// The module initializers follow 40250's order; missing modules arrive in later 2V steps.
 	initpack();
+	initdbg();
+	initgrp();
+	initgrpImage();
+	initgrpText();
+	initwndMgr();
+	initapp();
 
 	ClearLogBoxMessage();
 
@@ -122,6 +129,10 @@ bool RunMainScript(const char* lpCmdLine, std::string* error)
 			TraceError("RunMain Error");
 			return fail(error, "RunMain Error: " + LastLogBoxMessage());
 		}
+		// system.py catches failures in prototype.py and calls dbg.LogBox. Its outer
+		// RunFile then succeeds, so surface that recorded failure to the Godot host.
+		if (!LastLogBoxMessage().empty())
+			return fail(error, "RunMain Error: " + LastLogBoxMessage());
 	}
 
 	NANOEND
@@ -143,6 +154,7 @@ void Stop()
 {
 	if (!g_launcher)
 		return;
+	g_window_manager.reset();
 	g_launcher->Clear(); // Main() calls Clear() explicitly before the launcher leaves scope
 	g_launcher.reset();
 }