hotwire haku2 into rkgk

really a bodge job right now and it crashes but it's a start

crates/haku2/src/render.zig

@@ -54,6 +54,6 @@ fn renderRec(vm: *Vm, canvas: *Canvas, val: Value, depth: usize, max_depth: usiz
 }
 
 pub fn render(vm: *Vm, canvas: *Canvas, max_depth: usize) !void {
-    const val = try vm.pop();
+    const val = vm.stack[vm.stack_top - 1];
     try renderRec(vm, canvas, val, 0, max_depth);
 }