BranchLoader.Load reads the reflog commits to sort branches by recency.
Today it reads them straight from Model.ReflogCommits, which works
because in the recency path the reflog refresh writes that field
synchronously just before the branches refresh reads it (same goroutine,
sequential).
An upcoming commit bounces the reflog model write onto the UI thread, at
which point Model.ReflogCommits wouldn't be updated yet when branches
runs — branches would sort by the previous refresh's reflog. To decouple
the branches load from *when* that write lands, pass the reflog commits
to refreshBranches explicitly: refreshReflogCommits now returns the
commits it loaded, and the recency path hands them straight to
refreshBranches. The non-recency path (branches and reflog run
concurrently, as before) keeps passing Model.ReflogCommits.
Pure refactor: behavior is identical, since the value passed is exactly
what Load read from the model before.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>