some more cart infrastructure

index.ts

@@ -2,10 +2,9 @@ import {
 	mainloop,
 	frame,
 } from "./window.ts";
-import cart from "./cart_unpacked.json" assert { type: "json" };
-import { parseCodeSheet } from "./cart_tools.ts";
+import { codeSheet } from "./sheet.ts";
 
-const game = parseCodeSheet(cart[0].value);
+const game = codeSheet(0);
 
 game.init();