Zhe Wu

Discussed this with @mwtian in the office the other day. Can we make sure it is actually safe to cancel `make_checkpoint` and aggregator's `run_and_notify`, and won't leave inconsistent state in...

> > LGTM! Thanks for adding all the detailed comments! > > I wonder if it also worth creating some kind of cache invariant checker that runs periodically in simtest...

> If this feature will be enabled in testnet 1.30, I think the Narwhal config will probably never be used in testnet or mainnet. > > Also Mysticeti commit rate...