- Add docs/maintainers/merging-prs.md: policy to always use Squash and merge,
resolve conflicts on PR branch so PR shows Merged; Co-authored-by for rare
local integration
- Update .github/MAINTENANCE.md: merge via GitHub only, never close after
local integration; conflict resolution on branch then merge
- Update CONTRIBUTING.md Recognition: we always merge accepted PRs on GitHub,
never close after integrating locally
Addresses feedback from @sraphaz on #225 (attribution when PRs are integrated
locally). Going forward PRs will show as Merged so contributors get full credit.
