Files
msd-core/.changeset
Tom Boucher 7976b1ca0d feat(#1689): per-plan agent_hint executor routing (#3417)
* feat(#1689): per-plan agent_hint executor routing

Option A per-plan specialist routing: a plan with an `agent_hint:` frontmatter field is dispatched to that subagent instead of gsd-executor when it resolves on the active runtime; absent/unresolved/disabled falls back to gsd-executor (byte-identical). Default-on via workflow.agent_hint_routing.

- src/phase.cts: parse agent_hint into the plan-index JSON (plan_json.agent_hint)
- agent-install-check.cts: resolveAgentHint() reuses getAgentsDir + runtime filename variants; probes project + global agent dirs; fails closed; rejects path-traversing names
- gsd-tools.cjs: 'resolve-agent' query route (fail-closed to gsd-executor; --raw/--json)
- execute-phase.md: lean per-plan reference + {EXECUTOR_TYPE} placeholder (host stays under the ADR-857 Phase 6 byte ceiling)
- execute-phase/steps/per-plan-executor-routing.md: resolution logic (Agent()-based dispatch; advisory on orchestrator-worktree)
- config: workflow.agent_hint_routing (validKey, default-on via SCHEMA_DEFAULTS, boolean validator)
- docs (CONFIGURATION.md, plan-md.md), changeset, tests/agent-hint-routing-1689.test.cjs (17 tests)

* chore(#1689): backfill changeset PR number (#3417)

* chore(#1689): regenerate install-tree fixtures for new workflow fragment

* chore(#1689): ack deliberate execute-phase.md growth (agent_hint routing)

* test(#1689): SPAWN contract allows parameterized subagent_type placeholder

agent-frontmatter's spawn-type checks scanned subagent_type="..." as a
concrete agent name. execute-phase now uses subagent_type="{EXECUTOR_TYPE}"
(a runtime placeholder resolved via resolve-agent, default gsd-executor).
Skip {TOKEN} placeholders in both the known-type and <available_agent_types>
checks; execute-phase still lists the built-in roster incl. gsd-executor.

* fix(#1689): CI conformance for the routing fragment

- per-plan-executor-routing.md: add the canonical runtime-launcher preamble to
  its gsd_run block (runtime-launcher-parity #373), matching sibling step fragments.
- agent-install-check.cts: drop a literal ~/.claude/agents path from the
  resolveAgentHint JSDoc so it does not leak into the compiled engine .cjs
  (cline install leak guard).

---------

Co-authored-by: sim <sim@local>
2026-08-13 23:10:52 -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.