Initial commit: Pezkuwi SDK UI

Comprehensive web interface for interacting with Pezkuwi blockchain.

Features:
- Blockchain explorer
- Wallet management
- Staking interface
- Governance participation
- Developer tools

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/react-api/src/util/isEqual.ts

@@ -0,0 +1,16 @@
+// Copyright 2017-2026 @pezkuwi/react-api authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+function flatten (_key: string | null, value?: unknown): unknown {
+  return !value
+    ? value
+    : (value as Record<string, unknown>).$$typeof
+      ? ''
+      : Array.isArray(value)
+        ? value.map((item) => flatten(null, item))
+        : value;
+}
+
+export function isEqual <T> (a?: T, b?: T): boolean {
+  return JSON.stringify({ test: a }, flatten) === JSON.stringify({ test: b }, flatten);
+}