feat(club-002): club PWA: join flow, digital card and installable shell

work/artifacts/CLUB-002/qa.json

@@ -0,0 +1,50 @@
+{
+  "feature_id": "CLUB-002",
+  "agent": "qa",
+  "stage": "qa_gate",
+  "verdict": "APPROVED",
+  "qa_check": "qa",
+  "summary": "QA aprobado: CLUB-002 entrega navegación Club, alta/join, tarjeta digital y shell PWA instalable sin romper el build del storefront ni del backend principal.",
+  "test_results": {
+    "automated": [
+      "cd project/frontend && npm run build ✅",
+      "cd project && npm run typecheck ✅",
+      "cd project && npm run build ✅",
+      "./scripts/verify.sh ✅",
+      "git diff --check ✅"
+    ],
+    "coverage": [
+      "ruta proxy /api/club/[...path]",
+      "páginas /club, /club/join y /club/card",
+      "manifest.webmanifest e iconos PWA",
+      "metadata/viewport del layout del storefront",
+      "descubribilidad del Club desde header y footer"
+    ],
+    "manual_smoke_recommended": [
+      "Abrir /club y /club/join en navegador real y comprobar que POST /api/club/join deja cookie mdv_club y redirige a /club/card.",
+      "Comprobar en móvil/Chrome que aparece beforeinstallprompt y que la instalación abre start_url=/club en modo standalone.",
+      "Verificar con un miembro ya existente que /club/card recupera saldo y movimientos desde la cookie sin necesidad de login manual."
+    ]
+  },
+  "notes": [
+    "El build de Next lista correctamente /club, /club/join, /club/card y /manifest.webmanifest.",
+    "No hay todavía tests E2E navegador para el prompt de instalación; queda como smoke manual recomendado."
+  ],
+  "evidence": [
+    "work/artifacts/CLUB-002/implementer.md",
+    "work/artifacts/CLUB-002/reviewer.json",
+    "work/artifacts/CLUB-002/security.json",
+    "project/frontend/src/app/api/club/[...path]/route.ts",
+    "project/frontend/src/app/club/page.tsx",
+    "project/frontend/src/app/club/join/page.tsx",
+    "project/frontend/src/app/club/card/page.tsx",
+    "project/frontend/src/app/manifest.ts",
+    "project/frontend/src/components/club/ClubExperience.tsx",
+    "cd project/frontend && npm run build",
+    "cd project && npm run typecheck",
+    "cd project && npm run build",
+    "./scripts/verify.sh",
+    "git diff --check"
+  ],
+  "timestamp": "2026-08-26T17:21:18Z"
+}