Files
msd-core/.changeset
Tom Boucher d011a6fac2 refactor(hub): tighten Result<T> typed payload — ADR-0174 SDK retirement Phase 1.2 (#176) (#221)
* refactor(hub): tighten Result<T> to typed-payload-per-kind discriminated union (#176)

Each Hub error variant now carries only its own typed payload. The generic
`errorKind` field is renamed to `kind`; `message`/`details` escape hatches
are removed from Hub-emitted errors. Factory functions (makeUnknownCommand,
makeInvalidArgs, makeHandlerRefusal, makeHandlerFailure) are exported and
used in phase-command-router.cjs. Callers switch on `result.kind`.

Part of ADR-0174 P1.2.

<!-- docs-exempt: no docs/ changes; API is internal to Hub callers -->

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(hub): act on P1.2 review findings (#176)

Addresses 4 review findings on PR #221:
- Hub now runtime-validates ok:false variants against the typed shape
  and coerces malformed returns to HandlerFailure with a contract-
  violation message (codex finding #1, code-review finding #1)
- catch path now preserves the original throwable for non-Error
  throws via an Error wrapper with .thrown attached (codex finding #2)
- All 4 factory returns are Object.freeze'd (review finding #9)
- makeHandlerFailure validates cause is Error; non-Error causes are
  wrapped with .thrown attached (review finding #10)

Tests added for each finding (TDD red → green).

Refs #176. Part of #174.

* fix(docs-lint): add docs-exempt markers to both P1.2 changeset fragments

Both `176-typed-result-discriminated-union.md` and `176-hub-p1.2-review-findings.md`
carry `type: Changed` which triggers the docs-required lint. Neither fragment had
a `<!-- docs-exempt: <reason> -->` marker, causing `docs-lint` to fail with
`FAIL_DOCS_MISSING`. Added the per-fragment exemption marker to both (the repo has
no `no-docs` label). This is a purely internal SDK refactor (ADR-0174 P1.2) with
no public docs surface.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-24 14:20:28 -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

node scripts/changeset/cli.cjs render --version vX.Y.Z --date YYYY-MM-DD

Reads every fragment, groups bullets by type:, replaces ## [Unreleased] with a new ## [vX.Y.Z] - YYYY-MM-DD block, opens a fresh ## [Unreleased] above, deletes consumed fragments. Idempotent.