session-history/engineering/0023/SESSION-0023.0-TRANSCRIPT-2026-06-12T01-19--INPROGRESS.md

Session 0023.0 — Transcript

App: engineering Start: 2026-06-12T01-19 (PST) Type: planning-and-executing Posture: yolo Claude-Session: 41a32da1-5f00-4cb9-81a1-edd730cfd9e2 Status: PLACEHOLDER — claimed at session start; finalized at session end.

This file reserves session ID 0023 for engineering. The driver replaces this body with the full transcript and renames the file to its final SESSION-0023.0-TRANSCRIPT-2026-06-12T01-19--.md form at session end.

Launch prompt

Resume stored goal (/goal next): gitea-forge-backups SLICE-5 — off-VM freshness/failure alert (Cloud Scheduler → Cloud Run/Function reading bucket object/marker age; T-3 green; finalize RB-3/RB-4), AND fix the broken marker-refresh path in gitea-backup.sh (markers/last-success.json ~24h stale while dumps land), per specs/gitea-forge-backups.md §7.2 (engineering#30)

Plan

Anchor: design specs/gitea-forge-backups.md (graduated Solution Design, engineering#30) — ELIGIBLE (R2a). Goal (/goal next): gitea-forge-backups SLICE-5 freshness alert + fix the broken marker-refresh path.

Diagnosis (marker bug): markers/last-success.json froze at the FIRST live run (2026-06-11T04:46Z) while 4-hourly dumps keep landing. Root cause: the VM SA holds only roles/storage.objectCreator (storage.objects.create), which cannot overwrite an existing live object. Dumps use unique names → fresh create → OK. The marker uses a FIXED name → every run after the first is an overwrite → 403 → marker never refreshes; the job exits non-zero after the dump uploaded. Fix must NOT grant objects.delete (would let a compromised VM destroy backups — breaks §6.6/R-4 least-privilege). Correct fix = unique-named per-run markers (always a create), freshness keyed off newest-object age.

Increment 1 — Marker-refresh fix (PR A):

1. infra/gitea-backup/gitea-backup.sh: write the marker under a per-run name (markers/last-success-<ts>.json) — always a create; also keep richer fields.
2. Spec §6.3/§6.4 data-model wording (marker key is per-run; newest-object age is the primary freshness signal) + changelog bump.
3. DOC-2 (infra/deploy-gitea-on-gcp.md) backups section update.
4. Re-install on the live forge VM; run the service manually; verify a fresh marker lands and a 2nd run refreshes (the create-not-overwrite proof).

Increment 2 — SLICE-5 freshness checker (PR B):

1. Checker (Cloud Run job/Function, project wiggleverse, config gitea): list newest gitea-dump-*.zip, compute age, emit signal.
2. Alert delivery = Cloud Monitoring-native (no new secrets): custom metric + alert policy → email notification channel; off-VM dead-man's-switch.
3. Provision by hand (bootstrap infra, D-6 — NOT flotilla): Scheduler + checker + notification channel + alert policy.
4. T-3 green against scratch bucket (stale → fires; fresh → quiet) before live.
5. Finalize RB-3/RB-4 in infra/backup-restore-gitea.md; DOC-2 update; spec SLICE-5 done + changelog.

Deferred decisions

Autonomous-mode low-confidence calls the driver made and would have liked operator input on. Appended as the session runs; surfaced at finalize. Empty if none.

• Marker fix shape (medium-high confidence): chose unique-named per-run markers over (a) granting objects.delete — rejected, breaks the §6.6/R-4 "VM can create but not delete" security invariant — or (b) dropping the marker entirely and keying only off newest-dump age. Per-run markers keep the spec's TEL-1 marker artifact refreshing within least-privilege. Small spec data-model wording update follows; flagging in case the operator prefers a fixed canonical pointer.