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-query/src/CoreDescriptor.tsx

@@ -0,0 +1,29 @@
+// Copyright 2017-2026 @pezkuwi/react-query authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { PezkuwiRuntimeTeyrchainsAssignerCoretimeCoreDescriptor } from '@pezkuwi/types/lookup';
+
+import React from 'react';
+
+import { useApi, useCall } from '@pezkuwi/react-hooks';
+
+interface Props {
+  children?: React.ReactNode;
+  className?: string;
+  query: string;
+}
+
+function BrokerStatus ({ children, className = '', query }: Props): React.ReactElement<Props> {
+  const { api } = useApi();
+  const status = useCall<PezkuwiRuntimeTeyrchainsAssignerCoretimeCoreDescriptor>(api.query.broker?.status);
+  const strStatus = status === undefined ? '' : status.toJSON()[query];
+
+  return (
+    <div className={className}>
+      {strStatus?.toString()}
+      {children}
+    </div>
+  );
+}
+
+export default React.memo(BrokerStatus);