3435218089
* fix(#2452): stop shallow-fetching the base ref in three-dot-diff CI gates `mutation.yml` re-fetched the base branch with `--depth=1` after checking out with `fetch-depth: 0`. The shallow re-fetch truncates the base ref's ancestry, so `git diff --name-only origin/<base>...HEAD` in scripts/mutation-matrix.cjs can no longer compute a merge base and aborts with `fatal: origin/next...HEAD: no merge base` (exit 2). The `detect` job then fails and the `mutate` shards never run — so the 80% mutation-score threshold went UNVERIFIED rather than enforced. The failure is branch-position dependent, which is why it went unnoticed: a branch already level with the base incidentally passes (its merge base IS the single fetched commit), while a branch that is BEHIND fails. Observed on PRs #2436 and #2005. `changeset-required.yml` and `docs-required.yml` shallow-fetched the base ref too (`--depth=50`), shrinking the same window further. All three now fetch the BASE REF unshallowed. Their shallow *checkout* depth is left at 50: that is a separate, deliberate cost control with fail-closed semantics, owned by tests/policy-lint-shallow-checkout.test.cjs. Only the base-ref fetch changes. The two `${{ }}` interpolations in mutation.yml's run: blocks now pass the base name through `env:`, matching the sibling workflows. Regression coverage in tests/mutation-workflow-base-ref.test.cjs: - a per-workflow contract guard asserting the base fetch carries no --depth (RED on origin/next for all three files, GREEN here). The YAML step parser handles block scalars and skips commented-out steps, so a future refactor to a multi-line `run:` cannot silently degrade the guard. - a real-git mechanism proof with boundary coverage at the shallow edge: with the base advanced 60 commits past the branch point, --depth=1 and --depth=60 both fail with `no merge base`, --depth=61 (merge base exactly at the boundary) succeeds, and an unbounded fetch succeeds. Each variant uses an independent clone, because a plain fetch does not un-shallow a repo that already carries a .git/shallow boundary. Also fixes a startup race in tests/run-with-timeout.test.cjs surfaced by this branch's gsd-test run (C1, linux-node24). The heartbeat file only appeared ~100ms after the grandchild's runtime was up, but the window is 1s spanning two cold node starts, so on a loaded runner the timeout fired before any heartbeat existed and the precondition failed for reasons unrelated to reaping. The child now writes its heartbeat once synchronously at startup; the frozen-vs-ticking comparison that actually proves reaping is unchanged. Closes #2452 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * docs(changeset): backfill PR number to 2485 --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.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.