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/Menu/Header.tsx

@@ -0,0 +1,25 @@
+// Copyright 2017-2025 @pezkuwi/react-components authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { HeaderProps } from './types.js';
+
+import React from 'react';
+
+import { styled } from '../styled.js';
+
+function Header ({ children, className }: HeaderProps): React.ReactElement {
+  return (
+    <StyledDiv className={className}>
+      {children}
+    </StyledDiv>
+  );
+}
+
+const StyledDiv = styled.div`
+  color: var(--color-label);
+  font-size: var(--font-size-tiny);
+  line-height: 0.857rem;
+  margin-bottom: 0.3rem;
+`;
+
+export default React.memo(Header);