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-hooks/src/useScroll.ts

@@ -0,0 +1,27 @@
+// Copyright 2017-2025 @pezkuwi/react-hooks authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { useCallback, useEffect, useState } from 'react';
+
+import { createNamedHook } from './createNamedHook.js';
+
+function useScrollImpl (): number {
+  const [scrollY, setScrollY] = useState(window.scrollY);
+  const setYOffset = useCallback((): void => setScrollY(window.scrollY), []);
+
+  useEffect(() => {
+    function watchScroll () {
+      window.addEventListener('scroll', setYOffset);
+    }
+
+    watchScroll();
+
+    return () => {
+      window.removeEventListener('scroll', setYOffset);
+    };
+  }, [setYOffset]);
+
+  return scrollY;
+}
+
+export const useScroll = createNamedHook('useScroll', useScrollImpl);