fix(build): migrate project config and tests to updated git.zone tooling

test/test.tree.both.ts

@@ -1,4 +1,4 @@
-import { tap, expect } from '@push.rocks/tapbundle';
+import { tap, expect } from '@git.zone/tstest/tapbundle';
 import * as lik from '../ts/index.js';
 
 class TestClass {
@@ -129,7 +129,7 @@ tap.test("should create a JSON object that reflects a tree's hierachy", async ()
 
 tap.test('fromJsonWithHierachy rebuilds a tree', async () => {
   const newTree = new lik.Tree<{ name: string }>();
-  const jsonRoot = {
+  const jsonRoot: lik.ITreeNode<{ name: string }> = {
     data: { name: 'root' },
     children: [
       { data: { name: 'child1' }, children: [] },