Overview / Motivation

Auto-filed by the /daily Step-C parked-candidate sweep (2026-07-08) from a candidate parked on task #853 (recursion-guarded workflow-fix session).

Goal

Point the recipe outside the tree (e.g. RTMP="${XDG_RUNTIME_DIR:-/tmp}/reviewer-tmp-$$") or add an explicit caveat + fallback for git-root-resolving fixtures next to it; mind the agent-spec size ratchet when editing.

Workflow gap

• Bug observed: The Step 4 writable-tempdir fallback recipe (RTMP="$(pwd)/.claude/cache/reviewer-tmp-$$") places pytest TMPDIR/tmp_path INSIDE the git worktree, false-FAILing git-root-resolving test fixtures (observed live on #853 round 2: test_check_no_workflow_improver_spawn_flags_a_stray_spawn).
• Why it is a workflow gap: A reviewer-side recipe that makes real tests false-FAIL degrades the code-review gate's signal and invites wrong CONCERNS/FAIL verdicts on healthy diffs.
• Confidence (emitter): high

Proposed change (candidate diff sketch — refine in planning)

In code-reviewer.md Step 4 recipe:

• RTMP="$(pwd)/.claude/cache/reviewer-tmp-$$"

• RTMP="${XDG_RUNTIME_DIR:-/tmp}/reviewer-tmp-$$" # OUTSIDE the worktree: an in-tree TMPDIR

• makes git-root-resolving test fixtures resolve the worktree repo and false-FAIL

Scope / surfaces

• Primary target: .claude/agents/code-reviewer.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/, or tasks/.
• scripts/workflow_lint.py --check-asks passes; ruff on touched files passes; if workflow.yaml or CLAUDE.md change, they stay consistent with the rule file.
• This session runs under EPM_WORKFLOW_FIX_SESSION=1 and carries a workflow_fix_target: Provenance line — it MUST NOT auto-route any of its own subagents' workflow-fix candidates (recursion guard).

Provenance

• workflow_fix_target: .claude/agents/code-reviewer.md
• origin: parked candidate on task #853 at 2026-07-02T10:31:58Z

Verbatim parked note:

parked: EPM_WORKFLOW_FIX_SESSION — two round-2 reviewer-surfaced follow-ups (recursion guard: logged, not auto-routed):

1. target_file: .claude/agents/codex-code-reviewer.md — its Step 0.6 INCLUDING enumeration does not name the NEW script-mode deferred-imports paragraph, so a composer could abridge it out of the twin's prompt (the #606 omission class). proposed_change: add the paragraph to the enumeration (one line). confidence: high.
2. target_file: .claude/agents/code-reviewer.md — the Step 4 writable-tempdir recipe ((pwd)/.claude/cache/reviewer-tmp-$$) places pytest tmp_path INSIDE the git worktree, false-FAILing git-root-resolving test fixtures (observed live this round: test_check_no_workflow_improver_spawn_flags_a_stray_spawn). proposed_change: point the recipe outside the tree (e.g. {XDG_RUNTIME_DIR:-/tmp}/reviewer-tmp-$$) or add the caveat. confidence: high. NOTE: code-reviewer.md is at 70,757/72,000 B post-#853 — this edit may need the relocation candidate (see marker v2) first.

related_task: #853 (round-2 code-review, 2026-07-02).