Finish someone else's work as if it were yours, but credit them for what they did.

Steps

Read the source PR, branch or thread in full: description, commits, review comments and any later corrections from the user.
Find the real current state: the head SHA, uncommitted changes and open review findings. Treat the handoff notes as hints, not facts.
Write down the original goal in one sentence.
Choose where to work. By default, make a new branch with the original commits on it and add your fixes as separate commits. Continue in place or stack only if the user asked for it.
Run ds-revive to bring the work up to date with the base branch.
Fix what is needed to reach the original goal. Simplify where you can, but keep every intended behavior.
Verify on your own. Reproduce the original problem, then show it fixed. Run the real workflow, not only mocked tests. Record the commands and output.
Check the source PR again. It may have changed while you worked.
If a PR is wanted, file it with ds-pr, then watch it with ds-watch-pr. Use ds-pr-comments for any reply.
Report what you inherited, what you changed, how you verified it, how credit was kept and what is still open.

ds-adopt