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/page-parachains/src/useLeaseRanges.ts

@@ -0,0 +1,56 @@
+// Copyright 2017-2025 @pezkuwi/app-teyrchains authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { u32 } from '@pezkuwi/types';
+
+import { useMemo } from 'react';
+
+import { createNamedHook, useApi } from '@pezkuwi/react-hooks';
+import { BN } from '@pezkuwi/util';
+
+const RANGES_DEFAULT: [number, number][] = [
+  [0, 0], [0, 1], [0, 2], [0, 3],
+  [1, 1], [1, 2], [1, 3],
+  [2, 2], [2, 3],
+  [3, 3]
+];
+
+function isU32 (leasePeriodsPerSlot: unknown): leasePeriodsPerSlot is u32 {
+  return !!leasePeriodsPerSlot;
+}
+
+function useLeaseRangesImpl (): [number, number][] {
+  const { api } = useApi();
+
+  return useMemo(
+    (): [number, number][] => {
+      if (isU32(api.consts.auctions?.leasePeriodsPerSlot)) {
+        const ranges: [number, number][] = [];
+
+        for (let i = 0; api.consts.auctions.leasePeriodsPerSlot.gtn(i); i++) {
+          for (let j = i; api.consts.auctions.leasePeriodsPerSlot.gtn(j); j++) {
+            ranges.push([i, j]);
+          }
+        }
+
+        return ranges;
+      }
+
+      return RANGES_DEFAULT;
+    },
+    [api]
+  );
+}
+
+export const useLeaseRanges = createNamedHook('useLeaseRanges', useLeaseRangesImpl);
+
+function useLeaseRangeMaxImpl (): BN {
+  const ranges = useLeaseRanges();
+
+  return useMemo(
+    () => new BN(ranges[ranges.length - 1][1]),
+    [ranges]
+  );
+}
+
+export const useLeaseRangeMax = createNamedHook('useLeaseRangeMax', useLeaseRangeMaxImpl);