feat: initial Pezkuwi Apps rebrand from polkadot-apps

Rebranded terminology:
- Polkadot → Pezkuwi
- Kusama → Dicle
- Westend → Zagros
- Rococo → PezkuwiChain
- Substrate → Bizinikiwi
- parachain → teyrchain

Custom logos with Kurdistan brand colors (#e6007a → #86e62a):
- bizinikiwi-hexagon.svg
- sora-bizinikiwi.svg
- hezscanner.svg
- heztreasury.svg
- pezkuwiscan.svg
- pezkuwistats.svg
- pezkuwiassembly.svg
- pezkuwiholic.svg

packages/react-components/src/ChainLock.tsx

@@ -0,0 +1,73 @@
+// Copyright 2017-2025 @pezkuwi/react-components authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { HexString } from '@pezkuwi/util/types';
+
+import React, { useCallback, useMemo } from 'react';
+
+import { useApi } from '@pezkuwi/react-hooks';
+import { chains } from '@pezkuwi/ui-settings/defaults/chains';
+
+import { styled } from './styled.js';
+import Toggle from './Toggle.js';
+import { useTranslation } from './translate.js';
+
+interface Props {
+  className?: string;
+  genesisHash: string | null;
+  isDisabled?: boolean;
+  onChange: (genesisHash: HexString | null) => void;
+}
+
+function calcLock (apiGenesis: string, genesisHash: string | null): boolean {
+  if (!genesisHash) {
+    return false;
+  }
+
+  return (
+    Object.values(chains).find((hashes): boolean =>
+      hashes.includes(apiGenesis)
+    ) || [apiGenesis]
+  ).includes(genesisHash);
+}
+
+function ChainLock ({ className = '', genesisHash, isDisabled, onChange }: Props): React.ReactElement<Props> | null {
+  const { t } = useTranslation();
+  const { api, isDevelopment } = useApi();
+
+  const isTiedToChain = useMemo(
+    () => calcLock(api.genesisHash.toHex(), genesisHash),
+    [api, genesisHash]
+  );
+
+  const _onChange = useCallback(
+    (isTiedToChain: boolean) =>
+      onChange(
+        isTiedToChain
+          ? api.genesisHash.toHex()
+          : null
+      ),
+    [api, onChange]
+  );
+
+  if (isDevelopment) {
+    return null;
+  }
+
+  return (
+    <StyledToggle
+      className={className}
+      isDisabled={isDisabled}
+      label={t('only this network')}
+      onChange={_onChange}
+      preventDefault
+      value={isTiedToChain}
+    />
+  );
+}
+
+const StyledToggle = styled(Toggle)`
+  text-align: right;
+`;
+
+export default React.memo(ChainLock);