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/pages/Developers.tsx

@@ -11,7 +11,7 @@ const CodeSnippet = ({ language, code }: { language: string, code: string }) =>
 );
 
 const Developers: React.FC = () => {
-  const connectCode = `import { ApiPromise, WsProvider } from '@polkadot/api';
+  const connectCode = `import { ApiPromise, WsProvider } from '@pezkuwi/api';
 
 // Connect to the PezkuwiChain node
 const wsProvider = new WsProvider('wss://rpc.pezkuwichain.io');