refcell

`trusted-sync` is dead, long live `trusted-sync` https://github.com/anton-rs/kona/pull/621

* **#473** 👈 * `main` This stack of pull requests is managed by Graphite. Learn more about stacking. Join @refcell and the rest of your teammates on Graphite

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Added you as a collaborator btw @BrianBland so you don't need if a fork if you don't want :)

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> [!WARNING] > This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite....

Document to expand on this: https://hackmd.io/@refcell/rJfs8cr1ye

I'm thinking this should be merged after #638 which will bring kona to around ~95% which will give us enough of a buffer to avoid regressions hitting the threshold.

See: https://github.com/ethereum-optimism/optimism/issues/15297

If the `op-node` goes with [this PR](https://github.com/ethereum-optimism/optimism/pull/15719), we'll want to make topic scoring optional and turned off by default (so the `kona-node` has sensible defaults).