Fix Interaction with the Contract using Aztec JS

The Nebula contract has already been deployed and the intractions via CLI has been confirmed, but interacting with the contract over the webpage is a little bit too slow and seems to not work.

Lets work on the Aztecjs integration so that this is fixed.

Entrypoint: Have a wallet created when you siginin or register an accoutn with your gmail account, then you navigate to /dashboard.

Start by tracing the /dashboard flow after Gmail sign-in or registration and compare its Aztec JS contract interaction with the confirmed CLI path. Reproduce the reported slowness or failure in the webpage, and finish when a newly created wallet can interact reliably with the deployed Nebula contract from the dashboard.

Written by the indexing model from the issue text.