code-reviewer verifies named durability-pin test ships

Overview / Motivation

Auto-filed by the /daily Step-C parked-candidate routing pass (2026-07-09) from a recursion-guard-parked workflow-fix candidate raised on task #1179.

Goal

Add one bullet to code-reviewer.md plan-adherence duties: when the approved plan carries 'Durability pin: NEW tests/...', verify that test file/function exists in the round's diff; absent -> plan-adherence finding.

Workflow gap

• Bug observed: c31 (#1179) verifies a plan NAMES a durability pin test, but nothing verifies the named 'Durability pin: NEW tests/...' test actually ships in the diff — the naming-vs-shipping residual (verified on main 2026-07-09: no durability-pin bullet in code-reviewer.md).
• Why it is a workflow gap: The code-reviewer is the only agent that sees the diff; its spec has no duty to grep the plan's Durability-pin line and confirm the named NEW test exists in the diff.
• Confidence (emitter): medium

Proposed change (candidate diff sketch — refine in planning)

• • Durability-pin adherence: if the approved plan carries a 'Durability pin: NEW tests/...' line, confirm the named test exists in the diff (grep the diff name-status for the tests/ path); a missing named pin test is a plan-adherence finding (#1179 naming-vs-shipping residual).

Scope / surfaces

• Primary target: .claude/agents/code-reviewer.md

Constraints / invariants

• Workflow-surface only. scripts/workflow_lint.py --check-asks passes; ruff on touched files passes.
• This session runs under EPM_WORKFLOW_FIX_SESSION=1 semantics (workflow_fix_target Provenance line) — it MUST NOT auto-route its own subagents' workflow-fix candidates.

Provenance

• workflow_fix_target: .claude/agents/code-reviewer.md
• fingerprint: cd0c2e608cd2

Parked candidate block on #1179, 2026-07-09T16:07:14Z (alternatives critic, Phase 2 round 1; original fingerprint 21bcef70ec1c). confidence: medium.