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-crypto/src/base58/validate.spec.ts

@@ -0,0 +1,20 @@
+// Copyright 2017-2025 @polkadot/util-crypto authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/// <reference types="@polkadot/dev-test/globals.d.ts" />
+
+import { base58Validate } from './index.js';
+
+describe('base58Validate', (): void => {
+  it('validates encoded', (): void => {
+    expect(
+      base58Validate('a1UbyspTdnyZXLUQaQbciCxrCWWxz24kgSwGXSQnkbs', false)
+    ).toEqual(true);
+  });
+
+  it('fails on string with extra padding', (): void => {
+    expect(
+      () => base58Validate('a1UbyspTdnyZXLUQaQbciCxrCWWxz24kgSwGXSQnkbs=', false)
+    ).toThrow(/Invalid base58 character "="/);
+  });
+});