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/format/getSeparator.spec.ts

@@ -0,0 +1,53 @@
+// Copyright 2017-2025 @polkadot/util authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/// <reference types="@polkadot/dev-test/globals.d.ts" />
+
+import { getSeparator } from './getSeparator.js';
+
+describe('getSeparator', (): void => {
+  const normalizeSeparator = (separator: string) =>
+    separator === '\u202F' ? ' ' : separator;
+
+  const testLocales = [
+    { decimal: '.', locale: 'en', thousand: ',' },
+    { decimal: '.', locale: 'en-gb', thousand: ',' },
+    { decimal: ',', locale: 'sl', thousand: '.' },
+    { decimal: ',', locale: 'sl-si', thousand: '.' },
+    { decimal: ',', locale: 'it-it', thousand: '.' },
+    { decimal: '.', locale: 'ja-jp', thousand: ',' },
+    { decimal: '.', locale: 'hi-IN', thousand: ',' },
+    { decimal: '.', locale: undefined, thousand: ',' } // Fallback test
+  ];
+
+  testLocales.forEach(({ decimal, locale, thousand }) => {
+    it(`uses ${locale || 'system default'} locale`, (): void => {
+      expect(
+        getSeparator(locale)
+      ).toEqual({ decimal, thousand });
+    });
+  });
+
+  it('falls back for invalid locale', (): void => {
+    expect(
+      getSeparator('invalid-locale')
+    ).toEqual({ decimal: '.', thousand: ',' }); // Default fallback
+  });
+
+  it('matches system locale dynamically', (): void => {
+    const n = 1000.1;
+    const expected = {
+      decimal: n.toLocaleString().substring(5, 6),
+      thousand: n.toLocaleString().substring(1, 2)
+    };
+
+    expect(getSeparator()).toEqual(expected);
+  });
+
+  it('handles locales with unique separators', (): void => {
+    const result = getSeparator('fr-FR');
+
+    expect(normalizeSeparator(result.thousand)).toBe(' ');
+    expect(result.decimal).toBe(',');
+  });
+});