Every change used to add an entry at the top of Completed Steps in its
own commit, so each merge into `next` left every other open PR
conflicting on that list. The Workflow section now says to add no
entry: what landed is recorded on the tracker and in `git log`, where
each commit title names the issue it closes. The step that moved Next
Step into Completed Steps and pulled the top of Future Steps into Next
Step goes with it. The entries already in Completed Steps stay.
Model: opus-5-5
sneak