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-hooks/src/useCollectiveInstance.ts

@@ -0,0 +1,32 @@
+// Copyright 2017-2026 @pezkuwi/react-hooks authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { CollectiveType } from './types.js';
+
+import { useMemo } from 'react';
+
+import { useApi } from '@pezkuwi/react-hooks';
+import { isFunction } from '@pezkuwi/util';
+
+import { createNamedHook } from './createNamedHook.js';
+
+function useCollectiveInstanceImpl (instanceType: CollectiveType, instanceIndex?: number): CollectiveType | null {
+  const { api } = useApi();
+
+  return useMemo(
+    (): CollectiveType | null => {
+      const index = instanceIndex || 0;
+      const instances = api.registry.getModuleInstances(api.runtimeVersion.specName.toString(), instanceType);
+      const instance = instances && (index < instances.length)
+        ? instances[index] as 'council'
+        : instanceType;
+
+      return api.tx[instance] && isFunction(api.tx[instance].close)
+        ? instance
+        : null;
+    },
+    [api, instanceIndex, instanceType]
+  );
+}
+
+export const useCollectiveInstance = createNamedHook('useCollectiveInstance', useCollectiveInstanceImpl);