Files
msd-core/.changeset
Tom Boucher bc5619dd27 docs(#3247): record the capability instruction-surface trust model (#3249)
* docs(#3247): record the capability instruction-surface trust model

ADR-2363 records the trust posture for third-party capability SKILL.md
bodies, which #2322/#2340 made agent-invocable without any content-level
control. The path-level protections that fix shipped are all present; no
content scanner exists, and external-descriptor-trust.cts never had one.
Nothing was bypassed - the control did not exist and the boundary was
never written down.

D1 records the posture: skill bodies are trusted, unscanned agent
instructions. D2 rejects content scanning on Kerckhoffs (a shipped rule
set is readable by the adversary who installs it), on threat-model
non-transfer from ADR-1577 (there, instructions are anomalous inside
data; here they are the payload's legitimate form), and on Goodhart (a
scanned-OK line displaces the judgment the consent prompt exists to
provoke). D3 replaces the executable/non-executable binary with three
classes, adding instruction surface.

D4 keeps instruction surfaces out of the v1 disclosureSignature. The
signature is NOT the activation binding - hasProjectConsent compares
contentHash only, and a global install carries no consent record at all.
What re-encoding would do is perturb the signature of every skill-bearing
capability and fire a spurious re-consent prompt on its next upgrade,
which is what ADR-2782 D4 rule 5 already forbids. If instruction surfaces
ever need to be signature-bound, that lands as a versioned v2 signature
with a migration, never an in-place re-encoding.

Corrects capability-trust-model.md, which claimed skills get lighter
consent because they do not execute code - true, and not the relevant
property, since the agent is the interpreter. Adds the author-side
boundary to develop-a-capability.md and links it from
publish-a-capability.md. Both state that per-skill disclosure at the
consent prompt lands with #3248 and does not happen today.

Docs-only. No behavior change; no consent record perturbed. D5's
mechanism is Phase 1 (#3248), which is why the ADR is Proposed.

Refs #2363

* chore(#3247): backfill changeset pr number to 3249

---------

Co-authored-by: sim <sim@local>
2026-08-09 11:47:54 -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.