Motivation

Details like age and badge weren't updating. Fixes #1646.

• Extract batch age to a field in the dict so LiveView knows when it changed
• Broadcast an event on the block update task so views know to update assigns

Type of change

• New feature
• Bug fix
• Optimization
• Refactor

Testing

1. Deploy a devnet and the explorer.
2. Send a few proofs.
3. Stop sending proofs.
4. Go to the ex batches page. You should see the age column updating about once a minute.
5. Kill the operator.
6. Send a few more proofs.
7. Stop sending proofs.
8. After a while (5 minutes by default) the pending proofs should start turning red, with the badge signaling "unverified".
9. Verify also for a given batch and for the frontpage.

Checklist

• “Hotfix” to testnet, everything else to staging
• Linked to Github Issue
• This change depends on code or research by an external entity
  • Acknowledgements were updated to give credit
• Unit tests added
• This change requires new documentation.
  • Documentation has been added/updated.
• This change is an Optimization
  • Benchmarks added/run
• Has a known issue
  • Link to the open issue addressing it
• If your PR changes the Operator compatibility (Ex: Upgrade prover versions)
  • This PR adds compatibility for operator for both versions and do not change batcher/docs/examples
  • This PR updates batcher and docs/examples to the newer version. This requires the operator are already updated to be compatible