workflow-fix: port GCP find-newer sentinel wait to RunPod
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Overview / Motivation
Auto-filed by /daily 2026-07-03 from a recursion-guard-parked workflow-fix candidate.
Goal
port GCP's find-newer sentinel wait-loop hardening to the RunPod launcher
Workflow gap
- Bug observed: a self-daemonizing workload writes the sentinel at daemonize time (premature phase=done) on the RunPod lane; GCP already has find-newer wait-loop hardening (gcp.py:1171-1190, #601)
- Why it is a workflow gap: see candidate note
- Confidence (emitter): medium
Proposed change (candidate sketch — refine in planning)
port GCP's find-newer sentinel wait-loop hardening to the RunPod launcher
Scope / surfaces
- Primary target:
src/explore_persona_space/backends/runpod.py, src/explore_persona_space/backends/gcp.py - Grep the workflow surface for the pattern before editing; list every hit in the plan.
Constraints / invariants
- Workflow-surface only;
scripts/workflow_lint.py --check-askspasses; ruff on touched files passes.
Provenance
- workflow_fix_target: src/explore_persona_space/backends/runpod.py, src/explore_persona_space/backends/gcp.py
- fingerprint: 71192e38febb
parked — running under workflow_fix_target Provenance (recursion guard, workflow-fix-on-bug.md § Recursion guard). Two reviewer follow-up candidates logged, NOT auto-routed: (1) target_file: src/explore_persona_space/backends/runpod.py — widen the stale-sentinel clear to the experimenter step-11 wildcard (issue_/*/.completion-sentinel.json) to defeat #685 single-live-sibling resolution on same-pod re-execution (Claude r2 Minor 1, mechanizable). (2) target_file: src/explore_persona_space/backends/runpod.py + gcp.py parity — self-daemonizing workload writes the sentinel at daemonize time (premature phase=done); port GCP's find-newer wait-loop hardening (gcp.py:1171-1190, #601) to the RunPod launcher (Claude r2 Minor 2, pre-existing-on-trunk convention). Plus r1 Claude Minor: distinct reason arm when _runpod_terminal_rung broad except absorbs RunPodWorkloadStartError (mislabeled no_compute_available could be blindly re-driven by the capacity-retry pass).