* docs(#3574): record ADR-3574 install materialization primitives Epic #2866 phase 6 was scoped on the premise that materializing a layout is implemented three times and should become one module. Measured against the tree, the premise does not hold: the three sites overlap in shape and diverge in mechanism. applySurface prunes by allow-list precisely so it structurally cannot delete a user's files. installRuntimeArtifacts wipes a prefix-scoped set and restores a snapshot. A single writer has to pick one, and picking either trades a working guarantee for a different one. So the ADR declines phase 6's first acceptance criterion and says why, because the next reader who notices three similar loops should find this file rather than rediscover the conflict. What is extracted instead is the genuinely shared part: durable user-artifact staging for #1874-F19, reusing the migration primitive that copies strictly before delete and never dereferences a symlink, plus the retired-kind prune both callers already share. The agents bypass closes on its own terms. Two of the issue's premises were also stale: ten runtimes have already migrated off the inline agent dispatch, and the duplication comment's deliberate-until condition is partly met. Closes #3574 * chore(#3574): backfill changeset pr number --------- Co-authored-by: sim <sim@local>
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.