This change completes the refactoring of `fetchListIncrementally` by:
1. Importing `RelayBatchFetcher` in `js/nostr/client.js`.
2. Instantiating `RelayBatchFetcher` in `NostrClient` constructor.
3. Ensuring `RelayBatchFetcher` receives the client instance.
The complex logic was already moved to `js/nostr/relayBatchFetcher.js`, but the integration was missing, causing runtime errors. This change fixes the wiring and ensures the new class is used.
Co-authored-by: PR0M3TH3AN <[email protected]>