Rebrand: polkadot → pezkuwi build fixes

- Fixed TypeScript type assertion issues
- Updated imports from api-augment/substrate to api-augment/bizinikiwi
- Fixed imgConvert.mjs header and imports
- Added @ts-expect-error for runtime-converted types
- Fixed all @polkadot copyright headers to @pezkuwi

web/src/components/AccountBalance.tsx

@@ -102,8 +102,8 @@ export const AccountBalance: React.FC = () => {
       if (import.meta.env.DEV) console.log('💰 Fetching token prices from pools...');
 
       // Import utilities for pool account derivation
-      const { stringToU8a } = await import('@polkadot/util');
-      const { blake2AsU8a } = await import('@polkadot/util-crypto');
+      const { stringToU8a } = await import('@pezkuwi/util');
+      const { blake2AsU8a } = await import('@pezkuwi/util-crypto');
       const PALLET_ID = stringToU8a('py/ascon');
 
       // Fetch wHEZ/wUSDT pool reserves (Asset 0 / Asset 1000)