daily-fix: Step 10d additive-checkout guard-block recovery r

kind: infra#wf-fix#wf-fix-fp:ad14dbcd813f#daily-auto-filed

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Overview / Motivation

Auto-filed by /daily 2026-07-05 (route 2: behavior/logic change -> independent review), from the nightly transcript problem sweep.

Goal

Add to the Step 10d additive-checkout recipe: (a) the guard blocks any unqualified / git-restore variant - use the -C-qualified fence line verbatim; (b) on a guard block, the WHOLE compound was skipped, so regenerate the list file too before retrying (the block message's retry advice omits this).

Workflow gap

Bug observed: Two sessions improvised unqualified variants of the Step 10d additive-checkout/restore compound and got guard-blocked: #813 ran 'xargs -a ... git checkout issue-813 --' without -C "$REPO_ROOT" - the block also skipped the earlier clause that WRITES /tmp/issue-813-additive-files.txt, so the retry failed exit 128 + 'cat: No such file' before scratch-worktree recovery (session d36ef80b, 14:28Z); #1056 hit the same guard on a git-restore compound (session cc6ec8b5, 18:37Z).
Why it is a workflow gap: the failure originates in the workflow surface / shared helper named below, not in any one experiment.
Confidence (emitter): medium

Scope / surfaces

Primary target: .claude/skills/issue/SKILL.md
Doc-level recovery contract; complements #1047's hardening bundle.

Constraints / invariants

scripts/workflow_lint.py --check-asks + --check-references stay green; ruff clean on touched files; relevant tests pass.

Provenance

workflow_fix_target: .claude/skills/issue/SKILL.md
source: /daily 2026-07-05 problem sweep (transcript-mined)

Activity