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/x-bigint/src/index.ts

@@ -0,0 +1,22 @@
+// Copyright 2017-2025 @polkadot/x-bigint authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { extractGlobal } from '@pezkuwi/x-global';
+
+export { packageInfo } from './packageInfo.js';
+
+/**
+ * @internal
+ *
+ * There are _still_ some older environments (specifically RN < 0.70), that does
+ * not have proper BigInt support - a non-working fallback is provided for those.
+ *
+ * We detect availability of BigInt upon usage, so this is purely to allow functional
+ * compilation & bundling. Since we have operators such as *+-/ top-level, a number-ish
+ * result is used here.
+ */
+function invalidFallback (): number {
+  return Number.NaN;
+}
+
+export const BigInt = /*#__PURE__*/ extractGlobal('BigInt', invalidFallback);

packages/x-bigint/src/mod.ts

@@ -0,0 +1,4 @@
+// Copyright 2017-2025 @polkadot/x-bigint authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+export * from './index.js';

packages/x-bigint/src/packageInfo.ts

@@ -0,0 +1,6 @@
+// Copyright 2017-2025 @polkadot/x-bigint authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+// Do not edit, auto-generated by @polkadot/dev
+
+export const packageInfo = { name: '@polkadot/x-bigint', path: 'auto', type: 'auto', version: '14.0.1' };

packages/x-bigint/src/shim.ts

@@ -0,0 +1,7 @@
+// Copyright 2017-2025 @polkadot/x-bigint authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { BigInt } from '@pezkuwi/x-bigint';
+import { exposeGlobal } from '@pezkuwi/x-global';
+
+exposeGlobal('BigInt', BigInt);