chore: license server updates and tests

Co-authored-by: Cursor <cursoragent@cursor.com>

test/canonicalJson.test.mjs

@@ -0,0 +1,15 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { canonicalJson } from '../lib/canonicalJson.mjs';
+
+void test('canonicalJson: stable key order', () => {
+  const a = canonicalJson({ b: 2, a: 1 });
+  const b = canonicalJson({ a: 1, b: 2 });
+  assert.equal(a, b);
+  assert.equal(a, '{"a":1,"b":2}');
+});
+
+void test('canonicalJson: rejects non-finite number', () => {
+  assert.throws(() => canonicalJson({ x: NaN }), TypeError);
+});