/**** 
* Classes
****/ 
// Error Button
var ErrorButton = Container.expand(function () {
	var self = Container.call(this);
	self.errorId = null;
	self.errorTitle = null;
	self.errorMsg = null;
	self.assetId = null;
	self.init = function (errorId, errorTitle, errorMsg, assetId) {
		self.errorId = errorId;
		self.errorTitle = errorTitle;
		self.errorMsg = errorMsg;
		self.assetId = assetId;
		var btn = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var txt = new Text2(errorTitle, {
			size: 48,
			fill: 0x222222
		});
		txt.anchor.set(0.5, 0.5);
		txt.x = btn.width / 2 - btn.width / 2;
		txt.y = btn.height / 2 - btn.height / 2;
		self.addChild(txt);
	};
	self.down = function (x, y, obj) {
		if (typeof onErrorSelected === "function") {
			onErrorSelected(self.errorId, self.errorTitle, self.errorMsg);
		}
	};
	return self;
});
// Error Popup
var ErrorPopup = Container.expand(function () {
	var self = Container.call(this);
	self.bg = null;
	self.txtTitle = null;
	self.txtMsg = null;
	self.btn = null;
	self.btnTxt = null;
	self.init = function (versionName, errorTitle, errorMsg) {
		self.bg = self.attachAsset('popup_bg', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		// Title
		self.txtTitle = new Text2(versionName + " - " + errorTitle, {
			size: 60,
			fill: 0x222222
		});
		self.txtTitle.anchor.set(0.5, 0);
		self.txtTitle.x = 0;
		self.txtTitle.y = -self.bg.height / 2 + 60;
		self.addChild(self.txtTitle);
		// Message
		self.txtMsg = new Text2(errorMsg, {
			size: 48,
			fill: 0x444444
		});
		self.txtMsg.anchor.set(0.5, 0);
		self.txtMsg.x = 0;
		self.txtMsg.y = -self.bg.height / 2 + 160;
		self.addChild(self.txtMsg);
		// OK Button
		self.btn = self.attachAsset('popup_btn', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 0,
			y: self.bg.height / 2 - 100
		});
		self.btnTxt = new Text2("OK", {
			size: 48,
			fill: 0xFFFFFF
		});
		self.btnTxt.anchor.set(0.5, 0.5);
		self.btnTxt.x = 0;
		self.btnTxt.y = self.bg.height / 2 - 100;
		self.addChild(self.btnTxt);
	};
	self.down = function (x, y, obj) {
		// Only close if tap is on OK button
		var local = self.toLocal({
			x: x,
			y: y
		});
		var btnRect = {
			x: self.btn.x - self.btn.width / 2,
			y: self.btn.y - self.btn.height / 2,
			width: self.btn.width,
			height: self.btn.height
		};
		if (local.x >= btnRect.x && local.x <= btnRect.x + btnRect.width && local.y >= btnRect.y && local.y <= btnRect.y + btnRect.height) {
			if (typeof onPopupClosed === "function") {
				onPopupClosed();
			}
		}
	};
	return self;
});
// No plugins needed for MVP
// MacOS Version Button
var MacVersionButton = Container.expand(function () {
	var self = Container.call(this);
	self.versionId = null;
	self.versionName = null;
	self.init = function (versionId, versionName, colorAsset) {
		self.versionId = versionId;
		self.versionName = versionName;
		var btn = self.attachAsset(colorAsset, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		var txt = new Text2(versionName, {
			size: 60,
			fill: 0x222222
		});
		txt.anchor.set(0.5, 0.5);
		txt.x = btn.width / 2 - btn.width / 2; // Centered
		txt.y = btn.height / 2 - btn.height / 2;
		self.addChild(txt);
	};
	// Touch/click event
	self.down = function (x, y, obj) {
		if (typeof onVersionSelected === "function") {
			onVersionSelected(self.versionId, self.versionName);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xf0f0f0
});

/**** 
* Game Code
****/ 
// Error popup (shape)
// Error buttons (shapes)
// Mac OS version buttons (shapes)
// Data
var macVersions = [{
	id: 'macos_6',
	name: 'System 6',
	asset: 'macos_6'
}, {
	id: 'macos_7',
	name: 'System 7',
	asset: 'macos_7'
}, {
	id: 'macos_8',
	name: 'Mac OS 8',
	asset: 'macos_8'
}, {
	id: 'macos_9',
	name: 'Mac OS 9',
	asset: 'macos_9'
}, {
	id: 'macos_x',
	name: 'Mac OS X',
	asset: 'macos_x'
}, {
	id: 'macos_catalina',
	name: 'Catalina',
	asset: 'macos_catalina'
}];
var errorDefs = [{
	id: 'disk',
	title: 'Disk Error',
	msg: 'The disk “Untitled” could not be read because of a hardware problem.',
	asset: 'error_disk'
}, {
	id: 'finder',
	title: 'Finder Error',
	msg: 'The Finder has unexpectedly quit. Please restart your Macintosh.',
	asset: 'error_finder'
}, {
	id: 'type11',
	title: 'Type 11 Error',
	msg: 'Sorry, a system error occurred.\n“Type 11”\nTo temporarily turn off extensions, restart and hold down the shift key.',
	asset: 'error_type11'
}, {
	id: 'sadmac',
	title: 'Sad Mac',
	msg: 'A system error has occurred. Restart your Macintosh.',
	asset: 'error_sadmac'
}, {
	id: 'kernel',
	title: 'Kernel Panic',
	msg: 'You need to restart your computer. Hold down the Power button.',
	asset: 'error_kernel'
}];
// State
var selectedVersionId = null;
var selectedVersionName = null;
var versionButtons = [];
var errorButtons = [];
var popup = null;
// Layout constants
var gameWidth = 2048;
var gameHeight = 2732;
// Functions to handle state transitions
function showVersionButtons() {
	// Remove error buttons and popup if present
	for (var i = 0; i < errorButtons.length; ++i) {
		errorButtons[i].destroy();
	}
	errorButtons = [];
	if (popup) {
		popup.destroy();
		popup = null;
	}
	// Remove old version buttons
	for (var i = 0; i < versionButtons.length; ++i) {
		versionButtons[i].destroy();
	}
	versionButtons = [];
	// Layout: vertical stack, centered, skip top 100px
	var btnSpacing = 80;
	var btnH = 120;
	var totalH = macVersions.length * btnH + (macVersions.length - 1) * btnSpacing;
	var startY = (gameHeight - totalH) / 2 + 60;
	var centerX = gameWidth / 2;
	for (var i = 0; i < macVersions.length; ++i) {
		var v = macVersions[i];
		var btn = new MacVersionButton();
		btn.init(v.id, v.name, v.asset);
		btn.x = centerX;
		btn.y = startY + i * (btnH + btnSpacing);
		versionButtons.push(btn);
		game.addChild(btn);
	}
}
function showErrorButtons(versionId, versionName) {
	// Remove version buttons
	for (var i = 0; i < versionButtons.length; ++i) {
		versionButtons[i].destroy();
	}
	versionButtons = [];
	// Remove error buttons and popup if present
	for (var i = 0; i < errorButtons.length; ++i) {
		errorButtons[i].destroy();
	}
	errorButtons = [];
	if (popup) {
		popup.destroy();
		popup = null;
	}
	selectedVersionId = versionId;
	selectedVersionName = versionName;
	// Layout: vertical stack, centered
	var btnSpacing = 60;
	var btnH = 120;
	var totalH = errorDefs.length * btnH + (errorDefs.length - 1) * btnSpacing;
	var startY = (gameHeight - totalH) / 2 + 60;
	var centerX = gameWidth / 2;
	for (var i = 0; i < errorDefs.length; ++i) {
		var e = errorDefs[i];
		var btn = new ErrorButton();
		btn.init(e.id, e.title, e.msg, e.asset);
		btn.x = centerX;
		btn.y = startY + i * (btnH + btnSpacing);
		errorButtons.push(btn);
		game.addChild(btn);
	}
}
function showErrorPopup(versionName, errorTitle, errorMsg) {
	// Remove error buttons
	for (var i = 0; i < errorButtons.length; ++i) {
		errorButtons[i].destroy();
	}
	errorButtons = [];
	if (popup) {
		popup.destroy();
		popup = null;
	}
	// Centered popup
	popup = new ErrorPopup();
	popup.init(versionName, errorTitle, errorMsg);
	popup.x = gameWidth / 2;
	popup.y = gameHeight / 2;
	game.addChild(popup);
}
// Callbacks for buttons
function onVersionSelected(versionId, versionName) {
	showErrorButtons(versionId, versionName);
}
function onErrorSelected(errorId, errorTitle, errorMsg) {
	showErrorPopup(selectedVersionName, errorTitle, errorMsg);
}
function onPopupClosed() {
	// Return to main menu (version selection)
	showVersionButtons();
}
// Show initial screen
showVersionButtons();
// No update loop needed for MVP
// No GUI overlay needed for MVP
// No move/drag events needed for MVP
// No sound/music for MVP

===================================================================
--- original.js
+++ change.js