Session 0016.0 — Transcript

App: engineering Start: 2026-06-10T20-34 (PST) End: 2026-06-10T21-11 (PST) Type: planning-and-executing Claude-Session: bd35ac2f-4cc2-43e5-95e1-69ed72d8f71b Status: FINALIZED

Launch prompt

Do the gitea VM service-account scope maintenance window (stop → set-service-account --scopes=cloud-platform → start, per infra/deploy-gitea-on-gcp.md Backups box) — unblocks gitea-forge-backups SLICE-1 (engineering#30).

Plan

Anchor: design specs/gitea-forge-backups.md (engineering#30, graduated; D-3 / §13 Q1: operator approved the maintenance window)

Execute the gitea VM service-account scope maintenance window — the SLICE-1 unblock (spec §7.2 SLICE-1, risk R-1). Procedure is canonical in infra/deploy-gitea-on-gcp.md "Backups" box:

Checkpoint-publish this transcript BEFORE the window (session-history lives on the VM being stopped).
Pre-checks via CLOUDSDK_ACTIVE_CONFIG_NAME=gitea (§8.4): VM RUNNING, record current SA (1061347810527-compute@developer.gserviceaccount.com)
- scopes (devstorage.read_only).
gcloud compute instances stop gitea --zone=us-central1-a
gcloud compute instances set-service-account gitea --zone=us-central1-a --scopes=cloud-platform
gcloud compute instances start gitea --zone=us-central1-a
Verify: scopes = cloud-platform, same SA email, forge healthy (HTTPS git.wiggleverse.org + SSH :2222), on-VM ADC write-test to gs://wiggleverse-gitea-backups (proves the unblock; spec D-3).
Update the runbook's PENDING box (DOC-2) → branch → PR → merge.

Session ran isolated in worktree gitea-vm-scope-window (live concurrent SESSION-0009 in flight).

Pre-state

engineering main at 721538d, clean, == origin/main; no open PRs.
SLICE-1 prep done (session 0011, PR #33): bucket gs://wiggleverse-gitea-backups (versioned, lifecycle), VM SA objectCreator, dedicated gitea gcloud config.
BLOCKER: VM scope devstorage.read_only → cannot upload via ADC. Tracked as issue #34 (P0, task).
Concurrent live session: SESSION-0009 (started 09:40, own worktree engineering-session-0009) → this session isolated per §5.4 / init Step 6b.

Turn-by-turn arc

Init. Classified /goal prompt as planning-and-executing; claimed SESSION-0016 (atomic push, advisory 0016 held); anchor eligibility ELIGIBLE (R2a — graduated design specs/gitea-forge-backups.md); baseline clean; entered native worktree gitea-vm-scope-window (branch worktree-gitea-vm-scope-window).
Plan seeded + pre-window checkpoint published to session-history (deliberately before stopping the VM that hosts it).
Auth detour (wrong turn, recovered). The gitea gcloud config's CLI token had expired; interactive gcloud auth login impossible non-interactively. Tried alternate account — also expired. Asked operator to reauth; Stop-hook pushed for progress, so: started a background poller for CLI auth AND discovered ADC was still valid → ran the read-only pre-check via the Compute REST API (project explicit in URL; §8.4 satisfied, no config pointer touched). Pre-state recorded: RUNNING, default-SA, legacy scopes incl. devstorage.read_only. Operator's login then landed (poller exit 0).
The window (documented CLI commands, CLOUDSDK_ACTIVE_CONFIG_NAME=gitea): stop (≈2 min) → set-service-account --scopes=cloud-platform → start (operator executed the start command directly, interrupting the agent's identical call). ~3 min forge downtime total.
Verification. Post-state RUNNING, same SA, scopes = cloud-platform only. Forge: HTTPS 200 on https://git.wiggleverse.org/ within ~20 s; SSH :2222 git ls-remote OK. Metadata server on-VM confirms cloud-platform.
Write test (SLICE-1 proof). gsutil cp from the VM 403s — its destination-existence check needs storage.objects.list, which the create-only objectCreator IAM denies (misleading error; upload itself is allowed). Pure-create JSON-API objects.insert from the VM returned HTTP 200 (maintenance/scope-fix-write-test.txt). Verified from laptop, then deleted with operator credentials (VM correctly cannot delete).
DOC-2. Runbook infra/deploy-gitea-on-gcp.md updated: PENDING box → build-state record (scope raised 2026-06-10, session 0016); §1 OAuth warning and cert-rotation note brought current (Secret Manager self-fetch / Path A now possible); SLICE-2 note on the gsutil-vs-create-only-IAM gotcha. Commit 13807f2 → PR #41 → merged to main (69051a2).
Closeout. Issue #34 commented with the outcome and closed. Memory (project_gitea_forge_backups.md + MEMORY.md index) updated: SLICE-1 COMPLETE, next = SLICE-2. Operator asked whether SLICE-2 was also done — answered plainly: no, only unblocked.
Finalize. Worktree torn down (branch merged; commit confirmed on origin/main before discard), canonical main fast-forwarded to 69051a2, merged remote branch deleted, transcript finalized and published.

Cut state

SLICE-1 of engineering#30: COMPLETE. VM scope cloud-platform; bucket writable from the VM via ADC (proven); forge healthy; issue #34 closed; runbook current (PR #41 merged).
No automated backups exist yet — SLICE-2 (8-hour gitea dump + upload timer) is unblocked but unbuilt. The forge still has zero scheduled backups.
No plan artifact to archive (infra gesture; procedure was already canonical in the runbook — the ## Plan block above is the session plan record).
Pipeline (§9) status: hand-provisioned bootstrap infra + docs PR — no deployable app stage applies; the scratch-Gitea restore drill (SLICE-4) is the designated PPE stand-in for this capability.

Deferred decisions

Deleted the write-test object from the bucket with operator laptop credentials rather than leaving it for the 30-day lifecycle — judged trivially safe (artifact created seconds earlier by this session), but it is technically an irreversible delete.

Operator plate

Nothing pending from this session. (SESSION-0009 remains in flight, unrelated — its own worktree and transcript.)

Next-session prompt

/goal Build gitea-forge-backups SLICE-2 — scheduled gitea dump every 8h on the VM uploading to gs://wiggleverse-gitea-backups (use a pure-create upload path, not gsutil cp), per specs/gitea-forge-backups.md §7.2 (engineering#30)

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