* 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>
This commit is contained in:
Tom Boucher
@@ -346,6 +346,7 @@ All workflow toggles follow the **absent = enabled** pattern. If a key is missin
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| `workflow.skip_discuss` | boolean | `false` | When `true`, `/gsd-autonomous` bypasses the discuss-phase entirely, writing minimal CONTEXT.md from the ROADMAP phase goal. Useful for projects where developer preferences are fully captured in PROJECT.md/REQUIREMENTS.md. Added in v1.28 |
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| `workflow.text_mode` | boolean | `false` | Replaces AskUserQuestion TUI menus with plain-text numbered lists. Required for Claude Code remote sessions (`/rc` mode) where TUI menus don't render. Can also be set per-session with `--text` flag on discuss-phase. Added in v1.28 |
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| `workflow.use_worktrees` | boolean | `true` | When `false`, disables git worktree isolation for parallel execution. Users who prefer sequential execution or whose environment does not support worktrees can disable this. Added in v1.31. **Branch-divergence note:** when your branch has diverged from `origin/HEAD`, GSD auto-degrades to sequential and prints a warning. See [`worktree.baseRef`](#worktree-settings) to restore parallel execution on a diverged branch. **Per-runtime note:** whether this key can be honored depends on the runtime's declared `dispatch.isolation` capability, not on its name (#2584). Runtimes whose own harness isolates each executor (**Claude Code**, **Cursor**) run parallel worktrees natively; runtimes exposing a headless exec with an explicit working directory (**Codex**, **OpenCode**, **Kimi**, **Kimi Code**) get worktrees GSD itself creates and merges — where a dispatch site can only drive the harness model, those hosts degrade to sequential with a warning rather than aborting. Every other runtime declares no isolation primitive, and forcing `use_worktrees: true` there still fails closed before any executor dispatch. `/gsd-health` reports such a value as warning `W025` (#2486). **Default on a non-Claude install:** if a worktree-capable non-Claude host is not isolating as described above, check whether the install stamped this key's default to `false` and set an explicit `use_worktrees: true`. See [Executor isolation per runtime](#executor-isolation-per-runtime). |
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| `workflow.agent_hint_routing` | boolean | `true` | Per-plan specialist executor routing (#1689). When `true`, a plan whose `agent_hint:` frontmatter names a subagent that resolves on the active runtime is dispatched to that specialist instead of `gsd-executor`. Default `true` — a no-op for plans without `agent_hint:`, so existing dispatch is unchanged. Set `false` to disable. See [PLAN.md `agent_hint`](reference/plan-md.md#per-plan-executor-routing). |
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| `workflow.worktree_skip_hooks` | boolean | `false` | When `true`, executor agents in worktree mode pass `--no-verify` (skipping pre-commit hooks) and post-wave hook validation runs against the merged result instead. Opt-in escape hatch for projects whose hooks cannot run in agent worktrees. Default `false` runs hooks on every commit (#2924). |
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| `workflow.code_review` | boolean | `true` | Enable `/gsd-code-review` and `/gsd-code-review --fix` commands. When `false`, the commands exit with a configuration gate message. Added in v1.34 |
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| `workflow.code_review_depth` | string | `standard` | Default review depth for `/gsd-code-review`: `quick` (pattern-matching only), `standard` (per-file analysis), or `deep` (cross-file with import graphs). Can be overridden per-run with `--depth=`. Added in v1.34 |
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@@ -579,6 +579,7 @@
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"execute-phase/steps/executor-isolation-dispatch.md",
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"execute-phase/steps/gap-closure-artifacts.md",
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"execute-phase/steps/partial-wave.md",
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"execute-phase/steps/per-plan-executor-routing.md",
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"execute-phase/steps/per-plan-worktree-gate.md",
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"execute-phase/steps/post-merge-gate.md",
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"execute-phase/steps/regression-gate-run.md",
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@@ -75,8 +75,23 @@ must_haves:
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| `status` | No | `superseded` | Marks a plan that was deliberately reassigned or abandoned mid-phase and will never be executed. A `status: superseded` plan is excluded from the phase's plan and summary counts, so it never holds the phase below 100%. See [Superseded plans](#superseded-plans). Any other value (or the field's absence) has no effect on counting. |
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| `estimate` | No | object | Projected execution cost: `{tokens, raw_tokens, tasks, confidence}` (#2631, [ADR-2629](../adr/2629-phase-effort-estimation-calibration.md)). `tokens` is an `estimateTokens`-scale projection with the project's calibration factor **already applied** (which is why the plan-checker passes `--calibrated` to `estimate-check` — re-applying it would square the correction); `confidence` (`low`/`med`/`high`) is **derived from the calibration sample count, never self-rated**. Additive and optional — a plan without it behaves exactly as before. A plan estimated above `workflow.smart_zone_tokens` is flagged with a split recommendation at plan time; the flag is advisory and never blocks. |
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| `must_haves` | Yes | object | Goal-backward verification criteria. See below. |
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| `agent_hint` | No | string | Per-plan specialist executor routing (#1689). Name of a subagent that shares the `gsd-executor` execution contract (reads `execute-plan.md`, atomic-commit protocol). When the named agent resolves on the active runtime (an agent file exists in the runtime's agent dir), `execute-phase` dispatches it instead of `gsd-executor`. Unset/unresolved → `gsd-executor`, byte-identical to today. Default-on via `workflow.agent_hint_routing`; set `false` to disable. See [Per-plan executor routing](#per-plan-executor-routing). |
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| `gap_closure` | Only in gap-closure mode | string, exact match | Must be exactly the literal lowercase `true` — validated as a string comparison, not a YAML boolean, so `True`, `TRUE`, `yes`, and `1` are all rejected. Required on every plan generated by `/gsd-plan-phase --gaps`, checked by the `plan-gap-closure` schema (`src/frontmatter.cts`) rather than `plan`. `/gsd-execute-phase --gaps-only` filters strictly on this field, so an omitted or wrong-valued `gap_closure` on a gap-closure plan means it is silently skipped — zero executors spawned, no error (#2847). Standard and reviews-mode plans validate against the unmodified `plan` schema, which neither requires nor checks this field (nothing rejects it as an extra field either, if present). |
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### Per-plan executor routing
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A plan can opt into a **specialist executor** by setting `agent_hint:` to the name of a subagent that shares the `gsd-executor` execution contract — it reads `execute-plan.md`, follows the atomic-commit protocol, and carries Read/Edit/Write/Bash. A Flutter specialist, for example:
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```yaml
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---
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agent_hint: well-me-flutter-engineer
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---
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```
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At dispatch, `execute-phase` resolves the hint against the **active runtime's agent directory** (both project-local and user-global, across the runtime's filename variants — `.md`, `.agent.md`, `.toml`, …) and dispatches the named subagent via `subagent_type`. If the field is absent, blank, or the named agent does not resolve, the plan dispatches to `gsd-executor` — byte-identical to behavior without the field. Routing is gated by `workflow.agent_hint_routing` (default-on; see [CONFIGURATION](../CONFIGURATION.md#workflow-toggles)).
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The specialist agent is an ordinary agent file (e.g. `agents/well-me-flutter-engineer.md` on Claude Code); there is no separate registration manifest.
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### Superseded plans
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A phase reads complete when every `*-PLAN.md` has a matching `*-SUMMARY.md`. When a plan is reassigned or dropped mid-phase — its work folded into a later plan — it will never gain a summary, and without a marker it would pin the phase below 100% forever (the plan-level analogue of a retired phase). Add `status: superseded` to that plan's frontmatter to exclude it from **both** the plan count (denominator) and the summary count (numerator):
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