Initial rebrand: @polkadot -> @pezkuwi (14 packages)

- Package namespace: @polkadot/* -> @pezkuwi/*
- Repository: polkadot-js/common -> pezkuwichain/pezkuwi-common
- Author: Pezkuwi Team <team@pezkuwichain.io>

Core packages:
- @pezkuwi/util (utilities)
- @pezkuwi/util-crypto (crypto primitives)
- @pezkuwi/keyring (account management)
- @pezkuwi/networks (chain metadata)
- @pezkuwi/hw-ledger (Ledger hardware wallet)
- @pezkuwi/x-* (10 polyfill packages)

Total: 14 packages
Upstream: polkadot-js/common v14.0.1

packages/util/src/array/shuffle.spec.ts

@@ -0,0 +1,39 @@
+// Copyright 2017-2025 @polkadot/util authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/// <reference types="@polkadot/dev-test/globals.d.ts" />
+
+import { stringify } from '../stringify.js';
+import { perf } from '../test/index.js';
+import { arrayRange, arrayShuffle } from './index.js';
+
+const ptest = arrayRange(16284);
+
+describe('arrayShuffle', (): void => {
+  it('returns an empty array as-is', (): void => {
+    expect(
+      arrayShuffle([])
+    ).toEqual([]);
+  });
+
+  it('returns a single array as-is', (): void => {
+    expect(
+      arrayShuffle([100])
+    ).toEqual([100]);
+  });
+
+  it('shuffles an array', (): void => {
+    const inp = arrayRange(100);
+    const out = arrayShuffle(inp);
+
+    expect(inp).toHaveLength(out.length);
+    expect(
+      inp.filter((v) => !out.includes(v))
+    ).toEqual([]);
+    expect(
+      stringify(inp)
+    ).not.toEqual(stringify(out));
+  });
+
+  perf('arrayShuffle', 1000, [[ptest]], arrayShuffle);
+});