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session-history/ecomm/0021/SESSION-0021.0-TRANSCRIPT-2026-06-10T08-20--INPROGRESS.md
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# Session 0021.0 — Transcript
> App: ecomm
> Start: 2026-06-10T08-20 (PST)
> Type: planning-and-executing
> Claude-Session: 7f254528-630c-4d45-a898-0382927ce8a4
> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
>
> This file reserves session ID 0021 for ecomm. The driver replaces this
> body with the full transcript and renames the file to its final
> SESSION-0021.0-TRANSCRIPT-2026-06-10T08-20--<end>.md form at session end.
## Launch prompt
```
Implement SLICE-1 (walking skeleton) of SD-0001 v0.3.0 — repo scaffold (4-layer
backend + import-linter, Vite/React shell, scripts/check.sh, CI), dev Postgres
compose (single pinned service), platform/db (psycopg) migration runner +
migration 0001, /healthz, scripts/dev.sh (owns container lifecycle),
docs/BOOTSTRAP.md (localhost, Docker prereq) — per
wiggleverse-ecomm-content/specs/SD-0001-mvp-sign-up-and-single-storefront.md §7.2.
DoD: clean checkout → dev.sh → app up on an empty self-migrated Postgres, check
gate green in CI.
```
## Plan
> Anchor: design `wiggleverse-ecomm-content/specs/SD-0001-mvp-sign-up-and-single-storefront.md` (v0.3.0, graduated) — plan-eligibility ELIGIBLE (R2a).
**Goal:** Implement SLICE-1 (walking skeleton) of SD-0001 §7.2 — the localhost
half of BUC-5 (PUC-10).
**Ships:** repo scaffold (4-layer Python backend `main > domains > platform` +
import-linter contract; Vite/React shell; `scripts/check.sh`; Gitea CI); dev
Postgres compose (single pinned service, named volume, healthcheck); `platform/db`
(psycopg + small pool) with the forward-only migration runner (INV-7, advisory-lock
+ fail-stop) and migration `0001` (the §6.3 schema: account, auth_code, storefront,
storefront_membership); `/healthz` (process up + DB reachable + migrations current);
`scripts/dev.sh` (owns the container lifecycle); `docs/BOOTSTRAP.md` (localhost
section, Docker prerequisite).
**DoD:** clean checkout → `scripts/dev.sh` → app up on an empty, self-migrated
Postgres; `/healthz` green; `scripts/check.sh` gate green in CI; bootstrap test
skeleton runs migrate-from-empty + idempotent re-migrate (INV-1 partial).
Work on branch `claude/agitated-heyrovsky-1a1f47` (this worktree) → PR → merge to
`main`. Plan archived to the content repo `plans/` at finalize.
**Status: COMPLETE.** All 11 plan tasks done; 13 commits on the branch. DoD verified:
clean-checkout simulation (`.venv` + `node_modules` moved aside, `compose down -v`) →
`scripts/dev.sh``/healthz` 200 `{"status":"ok"}` on an empty self-migrated Postgres
(0 accounts, migration 0001 applied); `scripts/check.sh` green (lint-imports kept, 7
pytest passed, frontend tsc+build); CI workflow written (inert until a Gitea runner).
**Plan deviations (all green, recorded for the archived plan):**
1. **`app/main.py` stub added in Task 1** (not Task 5): import-linter's `layers`
contract requires every named layer module to exist, so the top layer needed a stub
from the start; Task 5 fleshed it into the real factory.
2. **Frontend tsconfig simplified**: the planned `tsconfig.node.json` project-reference
tripped `tsc` error TS6310 (composite project may not disable emit). Dropped the
split for a single `tsconfig.json` that typechecks `src`; Vite loads its own config
via esbuild (no tsc needed). One file, same gate.
3. **`scripts/dev.sh` portability fixes** (post-first-run): macOS ships bash 3.2 which
lacks `wait -n` → replaced with a `kill -0` poll loop; and `npm` spawns `vite` as a
grandchild, so cleanup now recurses `pgrep -P` to reap the whole subtree (Ctrl-C now
frees both :8000 and :5173). Both verified.
## 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._
- **Postgres major version pin = 16.** Spec §6.7/D-7 says the dev container is
"pinned to the Cloud SQL major version" but the eventual Cloud SQL instance major
isn't fixed yet (SLICE-4 provisioning, Q-1-adjacent). Chose `postgres:16`
mature, widely available, a safe Cloud SQL default. If the operator wants 17 (or to
match a specific Cloud SQL choice) it's a one-line change in `compose.yaml` +
`.gitea/workflows/ci.yml`. Low blast radius pre-data.