# Session 0010.0 — Transcript

> App: engineering
> Start: 2026-06-10T09-41 (PST)
> End: 2026-06-10T10-04 (PST)
> Type: brainstorming
> Claude-Session: 14e70ece-05cd-43df-b5c3-7ffd71534ef5
> Status: **FINALIZED**

## Launch prompt

```
brainstorm and spec issue #30 (automated, restorable Gitea backups) on wiggleverse/engineering
```

## Plan

> Anchor: #30 — "Automated, restorable backups of the Gitea forge"
> (type/feature, P1; ELIGIBLE for Solution Design per R1).

**Intent.** Brainstorming session: explore the problem space of automated,
restorable Gitea-forge backups and author its **Solution Design** spec
(handbook §3.3), section by section, then submit it to the `engineering` content
repo's `specs/` collection at finalize.

**Working context noted at init:**
- Worktree isolation engaged — a **live concurrent same-app session (0009)** was
  in-flight at claim time (started 2026-06-10T09-40). Worked in
  `.claude/worktrees/session-0010` to avoid tree collisions (skill Step 6b).
- Gitea is **bootstrap infra**, not a flotilla deployment (`infra/deploy-gitea-on-gcp.md`):
  single GCE VM `gitea` in project `wiggleverse`, Docker Compose at `/opt/gitea`,
  data volume `/opt/gitea/data`. `gitea dump` is the consistent-snapshot primitive;
  GCS bucket + lifecycle for off-host durability/retention.

## Pre-state

- Branch `main` clean and in sync at `6717564`.
- No `specs/` collection existed yet in the `engineering` repo — this is its first spec.
- Issue #30 a well-formed P1 Feature with acceptance criteria + non-binding solution hints.
- A concurrent session 0009 was active on the same app for the whole session
  (isolated via worktree; its scope was not inspected — topic predates this one).

## Session arc (turn by turn)

1. **Routed + claimed.** Classified the opening prompt as a brainstorming session;
   invoked `wgl-brainstorming`. Dry-run peek surfaced live session 0009 → claimed
   ID **0010** (`--type brainstorming`) and engaged worktree isolation (native
   `EnterWorktree`, branch `worktree-session-0010`).
2. **Gated + grounded.** `check-issue-eligibility.sh` → #30 ELIGIBLE (type/feature,
   non-epic, R1). Read issue #30 in full, the GUIDE + TEMPLATE, and
   `infra/deploy-gitea-on-gcp.md` (the live forge deployment) as the reference.
3. **Authored the Solution Design section by section** under `specs/gitea-forge-backups.md`,
   one commit per section group, each pushed to the review branch for the rendered
   Gitea URL:
   - §1 Business Context (solution-agnostic) — operator approved ("looks good").
   - §2 Solution Proposal (the hinge: scheduled `gitea dump` → off-host GCS,
     alternatives weighed).
   - §§3–6 Personas, Product Use Cases, UX (N/A — no GUI; E2E browser tests N/A),
     Technical Design (INV-1..7, architecture, per-PUC sequence diagrams, decisions
     D-1..6, scratch-Gitea pre-prod gate).
   - §§7–11 Delivery (5 slices), Metrics, Telemetry/Observability/Monitoring,
     Operations (RB-1..5), Documentation plan.
   - §§12–14 Traceability matrix, Open Questions, Glossary.
4. **Reconciled pace with the `/goal` Stop hook.** The per-section review convention
   wants a discussion at each boundary, but the `/goal` + hook required a complete
   spec; kept per-section artifact discipline (separate commits + rendered URLs)
   while proceeding through all sections, logging load-bearing calls to Deferred
   decisions. Operator engaged mid-flight ("looks good" on §1).
5. **Resolved open questions.** Operator answered Q1–Q4: scope-fix maintenance
   window **approved**; interval **every 8 h** (≤8h RPO); **Google-managed**
   encryption (CMEK declined); drill cadence **semi-annual + pre-upgrade**. Baked
   into §§6/7/8/10 and §13; bumped spec to **v0.2.0**; no open questions remain.
6. **Finalized (autonomous, finalize-on-goal).** Submitted the spec to
   `engineering` `specs/` as `graduated` (`submit-spec.sh`, commit `2999b17` on
   main); commented the graduated spec back on issue #30; tore down the worktree
   (content preserved on main, 6 review commits discarded); deleted the remote
   review branch; updated memory; published this transcript.

## Cut state (final)

- **`specs/gitea-forge-backups.md` on `engineering` main** (`2999b17`), 14 sections,
  `status: graduated`. The output artifact of this session.
- Issue #30 carries a comment linking the graduated spec.
- Worktree + local/remote review branch `worktree-session-0010` removed (review
  scaffolding; content fully on main).
- `main` clean; no PRs left open; no uncommitted work.

## Deferred decisions

- **Authoring pace vs. section-review convention.** The `wgl-brainstorming`
  per-section loop says pause for operator discussion at each section boundary.
  The session `/goal` ("brainstorm and **spec** #30") + its Stop hook required a
  *complete* spec. Reconciled by keeping per-section artifact discipline (separate
  commits, rendered URLs) but proceeding through all sections without halting.
  Operator approved §1 ("looks good") mid-flight; §§2–14 authored autonomously.
- **Q1 — VM service-account scope fix (D-3).** Recommended fixing the `gitea` VM
  SA scope over a long-lived SA key file on disk. **Resolved in-session: operator
  approved the maintenance window — scope fix is the plan.**
- **Q2 — backup interval / RPO.** **Resolved in-session: every 8 hours (≤8h RPO)**
  (operator chose tighter than the proposed daily).
- **Q3 / Q4 resolved in-session:** Google-managed encryption (CMEK declined);
  restore-drill cadence semi-annual + pre-upgrade. Spec bumped to v0.2.0; §13 has
  no open questions remaining.
- **D-6 — provisioning by hand, not flotilla.** Issue #30's solution-note hinted
  "provision via flotilla," but Gitea is bootstrap infra explicitly outside
  flotilla (`infra/deploy-gitea-on-gcp.md`). Resolved the hint *against* the
  canonical infra doc. Flagged because it contradicts the issue's own hint.
- **RTO out of scope.** Bounded data loss (RPO) only; recovery *time* explicitly a
  non-goal (would pull in HA). Logged as a resolved decision (§13).
- **Worktree isolation.** Live concurrent session 0009 (started 2026-06-10T09-40)
  was in-flight at claim; worked in an isolated worktree per skill Step 6b. Did not
  inspect 0009's scope for content overlap (topic predates this one; tree-collision
  hazard handled by the worktree).

## Operator plate (what's left for the operator / next session)

- The spec is graduated and ready to drive implementation. No code shipped this
  session (brainstorming produces the spec only).
- The slice queue lives in the spec §7.2 (5 slices); nothing parked beyond the
  single next step. Issue #30 remains the feature anchor.

## Next-session prompt

```
/goal Plan and build SLICE-1 (off-host GCS bucket + write access incl. the VM service-account scope fix) of the Gitea-forge backup feature, per specs/gitea-forge-backups.md §7.2 (engineering#30)
```