workflow-fix: mechanical ensemble reviewer no-show predicate
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Overview / Motivation
Auto-filed by the /daily Step-C parked-candidate sweep from a candidate parked on task #856 (park_form: recursion-guard).
Goal
Add a mechanical helper predicate (e.g. task_workflow.ensemble_verdicts_present(N, kinds, round) or a task.py subcommand) the orchestrator must run before any reviewer no-show decision.
Workflow gap
- Bug observed: The reviewer no-show decision at doubled review sites rests on a prose rule only; the orchestrator has no mechanical predicate verifying both ensemble verdict markers are present for the round before deciding.
- Why it is a workflow gap: Prose-only gates get skipped under context pressure; the precedent (stage_dispatch_should_skip) shows a tested library predicate is strictly stronger and testable.
- Confidence (emitter): medium (Phase 2 Alternatives Claude + Codex statistics S2, #856)
Proposed change (candidate diff sketch — refine in planning)
def ensemble_verdicts_present(issue, kinds, round_n) -> dict[str, bool]: read events.jsonl, return per-kind presence for the round; SKILL.md no-show step cites it as the required pre-decision check.
Scope / surfaces
- Primary target:
src/explore_persona_space/task_workflow.py, .claude/skills/issue/SKILL.md - Grep the workflow surface for the pattern before editing (
grep -rln '<pattern>' .claude/ CLAUDE.md scripts/) and update every hit; list them in the plan.
Constraints / invariants
- Workflow-surface only — never experiment code,
configs/, ortasks/. scripts/workflow_lint.py --check-askspasses; ruff on touched files passes; ifworkflow.yamlorCLAUDE.mdchange, they stay consistent with the rule file.- This session runs under
EPM_WORKFLOW_FIX_SESSION=1and carries aworkflow_fix_target:Provenance line — it MUST NOT auto-route any of its own subagents' workflow-fix candidates (recursion guard).
Provenance
- workflow_fix_target: src/explore_persona_space/task_workflow.py, .claude/skills/issue/SKILL.md
- origin: parked candidate on task #856 at 2026-07-02T16:29:49Z
parked: EPM_WORKFLOW_FIX_SESSION / workflow_fix_target recursion guard — see .claude/rules/workflow-fix-on-bug.md § Recursion guard. Candidate surfaced by the Phase 2 critic ensemble (Alternatives Claude + Codex statistics S2 concern): a MECHANICAL helper predicate (e.g. task_workflow.ensemble_verdicts_present(N, kinds, round) or a task.py subcommand) the orchestrator must run before any reviewer no-show decision would be strictly stronger than the prose rule this task ships (precedent: stage_dispatch_should_skip). target_file: src/explore_persona_space/task_workflow.py, .claude/skills/issue/SKILL.md. confidence: medium. NOT routed by this session (recursion guard); logged for a later orchestrator/human pass.