Files
msd-core/.changeset
Tom Boucher 58e5a5b581 fix(#3566): read the per-install .gsd-runtime marker above host-wide defaults in the isolation guards (#3589)
* test(#3566): pin per-install .gsd-runtime marker precedence in the isolation guard

Failing-first regression for #3566: resolveRuntimeIdentity must consult the
per-install marker (<install>/gsd-core/.gsd-runtime, written by every install
since #2297) above the host-wide ~/.gsd/defaults.json whose leakage #2840
exists to prevent. In-process block drives the marker through the same
_setInstallRuntimeMarkerForTests seam model-resolver.cts established.

* fix(#3566): read the per-install .gsd-runtime marker above host-wide defaults in the isolation guard

resolveRuntimeIdentity consulted ~/.gsd/defaults.json — the exact host-wide
file whose runtime leakage #2840 exists to prevent — and never the
per-install marker the installer has written for every runtime since #2297.
On a 2-runtime machine the guard confidently resolved the WRONG runtime and
silently went inert when that runtime declares no harnessIsolationFlag.
Precedence is now GSD_RUNTIME > config.json runtime > .gsd-runtime marker >
defaults.json, restoring #2840's design; the defaults rung stays last so
single-runtime and pre-#2297 installs keep #3045 BLOCKER 2 behavior.

* fix(#3566): apply the marker rung to the cursor subagent-start fallback; review fixes

Review finding (spec pass): hooks/gsd-cursor-subagent-start.js's
resolveFallbackIsolation mirrored the Claude hook's exact three-rung chain
and shared the bug — same rung inserted between config.json and the
host-wide defaults, same #2297-pattern seam, in-process regression +
negative controls.

Review finding (standards): dropped the one new raw-text assert.match on
the block reason (CONTRIBUTING test-output rule); the reason-naming
property stays pinned by the pre-existing #3045 row.

* chore(#3566): add changeset fragment

* chore(#3566): backfill changeset pr number

---------

Co-authored-by: sim <sim@local>
2026-08-17 10:48:32 -04:00
..

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.