# Session 0033.0 — Transcript

> App: ecomm
> Start: 2026-06-11T21-31 (PST)
> Type: planning-and-executing
> Claude-Session: 8c956100-2db1-417c-9752-8b5f37348878
> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
>
> This file reserves session ID 0033 for ecomm. The driver replaces this
> body with the full transcript and renames the file to its final
> SESSION-0033.0-TRANSCRIPT-2026-06-11T21-31--<end>.md form at session end.

## Launch prompt

```
/goal next → resumed stored goal: Plan and build SLICE-6 of SD-0002 (export & the round-trip lock: canonical serializer — one codec two directions, streamed GET /api/products/export + status-filter UI, enable the Export action on the Products page, nothing_to_apply no-op preview behavior already shipped, INV-12 property test diff(catalog, import(export(catalog))) = ∅ over text-field catalogs) per wiggleverse-ecomm-content/specs/SD-0002-products-bulk-csv-import-export.md §7.2, anchored on wiggleverse/wiggleverse-ecomm#13 — DoD: BUC-3/4 acceptance, INV-12 property test green, E2E e2e_export_download + e2e_roundtrip_noop green, TEL-3 emitting, DOC-1 updated, version 0.6.0 shipped through merge + PPE.

```

## Plan

> Anchor: design `wiggleverse-ecomm-content/specs/SD-0002-products-bulk-csv-import-export.md`
> (§7.2 SLICE-6) — ELIGIBLE per R2a (approved Solution Design); tracker anchor
> wiggleverse/wiggleverse-ecomm#13 (Feature, parent epic #12).
> Posture: autonomous (planning-and-executing default).

SLICE-6 — export & the round-trip lock (completes PUC-9, PUC-10):

1. Init done: adopted+finalized dead session 0029; claimed 0033; canonical
   `main` fast-forwarded to 011f4d5 (v0.5.0); isolated in worktree
   `worktree-slice-6-export-roundtrip` (session 0027 in flight, unbannered).
2. Write JIT implementation plan (superpowers:writing-plans) from SD-0002:
   canonical serializer (one codec, two directions), streamed
   `GET /api/products/export?status=…` (409 empty_catalog), Export menu UI
   on the Products page (status filter; disabled-with-note when empty),
   PUC-10 round-trip noop UX, INV-12 property test over text-field
   catalogs, TEL-3 `catalog_exported`, E2E `e2e_export_download` +
   `e2e_roundtrip_noop`, DOC-1 update, version 0.6.0.
3. Execute the plan (subagent-driven), gates: check.sh + e2e.sh green.
4. Ship through §9: merge PR → tag v0.6.0 + release tag → flotilla PPE
   deploy → PPE smoke. Prod promotion stays operator-gated.

Plan written (14 tasks) →
`docs/superpowers/plans/2026-06-11-slice-6-export-roundtrip.md`. Heart:
`serialize.py` (one codec two directions) reusing the `CatalogProduct`
snapshot the diff engine reads; INV-12 locked by a 200-catalog property
test + `e2e_roundtrip_noop`. Executing subagent-driven.

## Implementation outcome (pre-ship checkpoint)

SLICE-6 built subagent-driven (13 commits on `worktree-slice-6-export-roundtrip`,
off `main` @ 011f4d5 / v0.5.0). What landed:
- **`serialize.py`** — canonical serializer (one codec, two directions): the
  `CatalogProduct` snapshot → canonical CSV, inverse of codec/validate, §6.5.1
  row grammar (product fields + option names on row 0, variant-per-row, images
  interleaved, image-only rows, no Option*Value for no-option products).
- **`repo.export_catalog`** (status-filtered, sorted snapshot) +
  **`service.export_catalog`** (streamed, eager `EmptyCatalog`, TEL-3
  `catalog_exported`) + **`GET /api/products/export`** (StreamingResponse,
  409 empty_catalog, 422 bad status).
- **Frontend** export status-filter menu on the Products page (native
  `<details>` disclosure; disabled-with-note when empty); `exportUrl` /
  `EXPORT_STATUSES` / `isExportEnabled` helpers.
- **INV-12 locked** by a 200-catalog property test + 2 E2E
  (`e2e_export_download`, `e2e_roundtrip_noop`). DOC-1/DOC-4 updated. v0.6.0.
- **Final code review caught a real INV-12 bug** the green tests missed:
  `Variant Position` is a `CatalogVariant` attribute (not a `fields{}` entry),
  so the serializer emitted an empty cell → re-import reset position to file
  order → non-sequential stored positions round-tripped to a spurious update.
  Fixed (emit `str(variant.position)`); property generator strengthened to
  non-sequential positions + targeted regression test. The bug was reproduced,
  fixed TDD (red→green), re-verified.

Gates: `check.sh` green (lint-imports, 166 backend pytest, frontend build,
14 vitest); `e2e.sh` 6/6 green. Next: push → PR → merge → tag v0.6.0 +
release tag → flotilla PPE deploy → PPE smoke.

## Deferred decisions

- **Task 9 RTL-vs-pure-helper** (plan's adaptive point): repo has no
  `@testing-library/react`/jsdom and uses pure-logic `.test.ts` only — took the
  pure-helper path (`exportMenu.ts` + `.test.ts`), JSX verified by E2E. Avoided
  dragging in a test framework as a slice side effect (matches SLICE-2/3).
- **Stale frontend lockfile**: `package-lock.json` was at 0.4.0 (SLICE-5 bumped
  package.json but not the lock); `npm version 0.6.0` synced both. Harmless.

_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._