Files
msd-core/.changeset
Tom Boucher a987cf2731 chore(#2932): emit a per-invocation section manifest from the init bundle (#2987)
* chore(#2932): emit a per-invocation section manifest from init

Extends the init bundle with a typed per-invocation section manifest so an
invocation loads only the branch guidance it will actually take.

The three flag/state-gated branches in execute-phase.md move into their own
step files; the parent keeps its gsd:section markers wrapping a one-line
on-demand reference, so each section's prose lives in exactly one file and
the parent shrinks 93369 -> 89507 bytes. A new drift-guarded generator
derives the shipped section manifest from those markers, and a new pure
evaluator maps invocation facts to applicable section ids.

The evaluator is a lookup over the frozen WHEN_VOCABULARY, never a parser
(Greenspun's Tenth Rule, ADR-1671:69); a parity test asserts the vocabulary
and the predicate map stay exhaustively in sync.

Closes #2932

* fix(#2932): fail closed on prototype-chain when values

An isolated adversarial review found WHEN_PREDICATES[section.when] was a
bracket lookup on a plain-prototype object, so inherited Object.prototype
members resolved as predicates: "constructor"/"toString"/"valueOf"/
"hasOwnProperty" returned truthy and SILENTLY INCLUDED the section, and
"__proto__" threw an untyped TypeError carrying no .reason. Both violate
the module's documented fail-closed contract, and the manifest is read from
disk at run time so it cannot be assumed trustworthy.

Builds the predicate map on a null prototype and guards the lookup with an
explicit Object.hasOwn check. Adds table-driven coverage for nine
Object.prototype-shaped keys asserting the TYPED reason (asserting only
that it throws would still pass while broken) plus a fast-check property
injecting a hostile value at an arbitrary document position.

* test(#2932): retarget execute-phase step assertions at extracted step files

* fix(#2932): emit typed reasons for generator lib-load and write failures

* fix(#2932): restore launcher preamble in extracted steps and refresh derived fixtures

* chore(#2932): backfill changeset pr number to 2987

---------

Co-authored-by: sim <sim@local>
2026-08-02 12:34:41 -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.