* enhance(#4261): report size-cap headroom on every run, with a reserved margin The tier caps are red lines and none of them moves here. What was missing is everything below the red line: a passing run said nothing, so a contributor at 99.6% of a cap and one at 60% got identical feedback, and the density that produces merge-time collisions was invisible to the people creating it. Two levels, matching the shape execute-phase.md already carries by hand (a hard ceiling plus a lower margin "so minor future edits don't re-trip the gate") and which was until now the only capped file with one: 1. a headroom census printed every run, green included, sorted least-headroom-first, and appended to the GitHub job summary 2. a 95% reserved margin that names the files inside it and REPORTS rather than fails The margin deliberately does not fail. A cap breach is a red line; a file at 96% is not broken, it is a file whose next contributor should extract before adding. Failing there would create a second red line and force exactly the +N bumps the policy forbids. Neither level asserts a count, so this adds no snapshot to regenerate — the per-file size baseline was deleted by #2724 for conflicting on 7 of 7 PRs that touched it. Also deletes rather than refreshes the per-tier high-water comments in both guard files. They were measured once and then diverged from the tree: the LARGE line still claimed "gsd-executor 42,342 -> ~6.8 KB headroom" while the real high-water sat at 99.6% of that cap, so the comment documenting the margin was itself why nobody noticed the margin was gone. As measured on next by the new census, the pressure has grown since the issue was filed: gsd-plan-checker.md has 9 bytes of headroom, gsd-verifier.md 21, and plan-phase.md 14. * chore(#4261): add changeset for the size-cap headroom census * test(#4261): exercise reserved-margin boundaries --------- Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
Changeset Fragments
This directory holds per-PR CHANGELOG fragments. Every PR with user-facing changes drops one (or more) <random-name>.md files here describing its CHANGELOG entry. Fragments are consolidated into the top-level CHANGELOG.md at release time.
Why
Two PRs that both edit the ### Fixed block of CHANGELOG.md always conflict on merge — git can't pick a serialization order without human input. Two PRs that each add a fresh .changeset/<unique-name>.md never conflict because they don't share lines.
See #2975 for the full rationale.
Adding a fragment
node scripts/changeset/new.cjs \
--type Fixed \
--pr 1234 \
--body "fix the thing — explain the user-visible change in one sentence"
This writes .changeset/<adjective>-<noun>-<noun>.md with frontmatter and a body. Three random words → concurrent PRs don't collide.
Format
---
type: Fixed
pr: 1234
---
**`/gsd-foo` no longer drops trailing slashes** — explain the user-visible change.
Allowed type: values follow Keep a Changelog: Added, Changed, Deprecated, Removed, Fixed, Security.
Opting out
PRs that legitimately have no user-facing impact can add the no-changelog label. CI honors it. When unsure, add the fragment.
At release time
Promotion is automatic. The release workflow's finalize job runs:
node scripts/changeset/cli.cjs render --version vX.Y.Z --date YYYY-MM-DD --allow-empty
This reads every fragment, groups bullets by type:, replaces ## [Unreleased] with a new ## [vX.Y.Z] - YYYY-MM-DD block, opens a fresh ## [Unreleased] above, and deletes consumed fragments. The --allow-empty flag ensures a no-change release still gets a dated heading (with a _No notable changes._ placeholder). A subsequent verify step confirms the promotion landed correctly. Maintainers do not run this by hand.
Archived fragments
.changeset/archived/ holds fragments for already-shipped releases (≤ 1.3.1), retained for provenance. Their content was hand-curated into the dated ## [1.x.y] sections of CHANGELOG.md during the #690 backfill — they were never consumed by render. All changeset tooling enumerates .changeset/ non-recursively, so archived fragments are never picked up or rendered. Do not move them back to the top level.