update ecomm/0033/SESSION-0033.0-TRANSCRIPT-2026-06-11T21-31--INPROGRESS.md

ecomm/0033/SESSION-0033.0-TRANSCRIPT-2026-06-11T21-31--INPROGRESS.md

@@ -46,8 +46,44 @@ Plan written (14 tasks) →
 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._