* feat(#1431): runtime capability registry overlay (ADR-1244 Phase 2) Promote the registry from a frozen data file to loadRegistry({includeInstalled}), composing the first-party registry with a validated installed overlay (ADR-1244 D2): - Extract the conformance validator to a shared runtime-callable module (gsd-core/bin/lib/capability-validator.cjs); the generator re-exports it verbatim, guarded by a generative-parity test (no build-time/runtime drift). - capability-loader.cts: loadRegistry({includeInstalled}) composes first-party ∪ validated overlay from $GSD_HOME/.gsd/capabilities (global) and <root>/.gsd/capabilities (project) via the canonical buildRegistry. First-party always wins (id/skill/agent/config/command-family + reserved gsd-/anthropic- prefixes); full merged-set cross-capability validation; engines.gsd load-time re-gate (skip-with-warning); gate-kind capabilities FAIL CLOSED; fragment-path escapes rejected. - semverSatisfies (hand-written, no dep) for the engines.gsd gate, fail-closed. - Wire surface/state + loop to the overlay; loop injects a blocking gate for each skipped gate-kind overlay (fail-closed). - cwd-aware overlay config-key federation: config-loader _federatedConfigSchema(cwd) + config-schema isValidConfigKey(key, cwd) compose the overlay per loadConfig/ config-set call (never eager at module load, never wrong-cwd); first-party path unchanged with no cwd. - run-tests.cjs sandboxes GSD_HOME (idempotent — nested spawns reuse it) for test hermeticity; capability-loader.cjs git+eslint-ignored (tsc artifact); capability-validator.cjs stays linted (#551 migration coverage). Closes #1431 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * docs(#1431): add changeset for runtime capability registry overlay Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * test(#1431): kill config-schema cwd-aware federation mutants (Stryker ≥52) The cwd-aware overlay config-key federation added to config-schema.cts (_capabilityConfigSchema(cwd) + isCapabilityConfigKey/isValidConfigKey cwd threading) introduced mutable surface uncovered by config-schema's mutation test set, dropping its score to 39.58% (below the 52 break threshold). Add a real-overlay-fixture describe block exercising every branch (cwd guard, overlay loadRegistry, found-branch, first-party fallback, cwd threading); local Stryker score 39.58% -> 77.08%. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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.