Changes the release-notes workflow so each landing PR records its next-release line in its own file under .alfonso/release-notes/next/ instead of appending to next-notes.md, so merging one PR no longer forces every other queued PR to rebase. Adds the aft-search slice descriptor that marks notes-fragments as a non-ranking harness slice.
Confidence Score: 5/5
The PR appears safe to merge.
Summary
The PR changes how landing PRs record draft release notes.
Landing pull requests keep release-note drafts in separate files.
The benchmark marks this slice as a non-ranking harness change.