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/useCoretimeConsts.ts

@@ -0,0 +1,49 @@
+// Copyright 2017-2025 @pezkuwi/react-hooks authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { ChainConstants } from './types.js';
+
+import { useEffect, useState } from 'react';
+
+import { useApi, useBlockTime } from '@pezkuwi/react-hooks';
+import { BN, BN_ONE, BN_ZERO } from '@pezkuwi/util';
+
+import { createNamedHook } from './createNamedHook.js';
+
+function useCoretimeConstsImpl (): ChainConstants | undefined {
+  const { api, apiCoretime, isApiReady } = useApi();
+  const [coretimeConstants, setCoretimeConstants] = useState<ChainConstants | undefined>();
+
+  const [blockTimeMsRelayChain] = useBlockTime(BN_ONE, api);
+  const blockTimeMsCoretimeChain = apiCoretime?.consts.aura?.slotDuration;
+  const blocksPerTimesliceRelayChain = apiCoretime?.consts.broker?.timeslicePeriod;
+
+  useEffect(() => {
+    if (!isApiReady || !blockTimeMsRelayChain || !blockTimeMsCoretimeChain || !blocksPerTimesliceRelayChain) {
+      return;
+    }
+
+    const blockTimeMsCoretimeChainBN = new BN(blockTimeMsCoretimeChain.toString());
+    const blocksPerTimesliceRelayChainBN = new BN(blocksPerTimesliceRelayChain);
+    const relationConstant = blockTimeMsCoretimeChainBN.div(new BN(blockTimeMsRelayChain));
+
+    const blocksPerTimesliceCoretimeChain = relationConstant.gtn(0)
+      ? blocksPerTimesliceRelayChainBN.div(relationConstant)
+      : BN_ZERO;
+
+    setCoretimeConstants({
+      coretime: {
+        blocksPerTimeslice: blocksPerTimesliceCoretimeChain.toNumber(),
+        blocktimeMs: blockTimeMsCoretimeChainBN.toNumber()
+      },
+      relay: {
+        blocksPerTimeslice: blocksPerTimesliceRelayChainBN.toNumber(),
+        blocktimeMs: blockTimeMsRelayChain
+      }
+    });
+  }, [isApiReady, blockTimeMsRelayChain, blockTimeMsCoretimeChain, blocksPerTimesliceRelayChain]);
+
+  return coretimeConstants;
+}
+
+export const useCoretimeConsts = createNamedHook('useCoretimeConsts', useCoretimeConstsImpl);