Delivers option (a) from the #1314 maintainer review: thread a fourth flat scalar check_violation_fixture through the projection so a prohibition authored at spec-phase machine-proves fail-first and greens through the deterministic path alone — zero hand-authoring at verify time. - src/probe-core.cts: Prohibition gains check_violation_fixture?; projectProhibitions emits it (both kinds) ONLY for a well-formed descriptor and ONLY when non-empty (blank/absent -> projects absent -> producer hard-gates, never a partial green). - src/prohibition-enforcement.cts: descriptorFromProjection reads it back into violationFixture via the same numeric-coercion-safe scalar() normalizer. - Tests (RED-first, proven non-vacuous by reverting both src edits): CHK-02(#1346) projection emit, CHK-08(#1346) read-back, CHK-03(D) example round-trip, the fast-check round-trip property extended to the 4th scalar (the contract trek-e blocked #1301 on), and a real-subprocess COMPOSE capstone greening end-to-end through project -> descriptorFromProjection -> default prover+runner. - Docs flipped from 'hard-gates until #1346' to 'composes end-to-end': verify-phase.md, prohibition-probe.md, spec-phase.md authoring, ADR-550 addendum, changeset. #1346 now tracks only the node-test causation residual. 190 affected-suite tests green; eslint + tsc clean; size baseline regenerated.
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.