feat(ADM-018): completed feature

work/artifacts/F-023/reviewer.json

@@ -0,0 +1,19 @@
+{
+  "feature_id": "F-023",
+  "agent": "reviewer",
+  "verdict": "APPROVED",
+  "summary": "F-023 review approved. Payments module isolates Stripe logic in an adapter, validates signatures with HMAC-SHA256, idempotently records events via a unique constraint, and triggers order state transitions on PaymentSucceeded/PaymentFailed.",
+  "evidence": [
+    "Read work/current.md, architect.md and implementer.md",
+    "Inspected payments domain/application/infrastructure/API and migration 017_payments.js",
+    "Verified Stripe-only references stay inside the adapter",
+    "Verified webhook signature verification uses Node crypto with timingSafeEqual and 5-minute tolerance",
+    "Verified (provider, provider_event_id) uniqueness and ON CONFLICT DO NOTHING make webhook replay idempotent",
+    "Verified payments-service test proves first/processed + replay/duplicate",
+    "gentle-ai review mode status: receipt-driven development off globally, ordinary Orquestra gate used",
+    "cd project && npm run lint/typecheck/build/test passed",
+    "cd project && TEST_DATABASE_URL='postgres://mdv:mdv_dev_only@localhost:5432/mdv_test' npm run test:integration -- migrations.itest passed: 14 files, 53 tests",
+    "./scripts/verify.sh passed"
+  ],
+  "timestamp": "2026-08-15T18:37:54Z"
+}