* 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>
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