feat(club-003): club POS integration: identify member and register cashback from sales

work/artifacts/CLUB-003/leader-close.json

@@ -0,0 +1,31 @@
+{
+  "feature_id": "CLUB-003",
+  "agent": "leader",
+  "stage": "close",
+  "verdict": "APPROVED",
+  "summary": "CLUB-003 cerrada: integración Club/TPV con resolución de socio por código, acumulación idempotente de cashback en ledger y extensiones fail-safe en venta POS.",
+  "gates_summary": {
+    "reviewer": "APPROVED",
+    "security": "APPROVED",
+    "qa": "APPROVED"
+  },
+  "artifacts": [
+    "architect.md",
+    "implementer.md",
+    "reviewer.json",
+    "security.json",
+    "qa.json",
+    "documenter.md",
+    "leader-close.json"
+  ],
+  "evidence": [
+    "cd project && npm run typecheck",
+    "cd project && npm run build",
+    "cd project/apps/pos && npm run build",
+    "cd project && npx vitest run src/modules/pos/tests/payment-allocation.test.ts",
+    "cd project && npx vitest run src/modules/club/tests/",
+    "./scripts/verify.sh",
+    "git diff --check"
+  ],
+  "timestamp": "2026-08-26T18:16:10Z"
+}