Go to Theme setup to add the wishlist block to your product page.
Ensure Firebase server credentials are set in environment:FIREBASE_PROJECT_ID, FIREBASE_CLIENT_EMAIL,FIREBASE_PRIVATE_KEY. These power server-side writes.
Ensure the storefront app proxy is configured with the path/apps/garden in Admin / App setup. The proxy endpoints used are:/v1/lists, /v1/status, /v1/recommendations.
Verify Firestore writes appear undercustomers/{shop:customerId}/wishlists when saving items, and shop settings undershops/{shop}/settings/wishlist when saving the Settings page.
If you use Redis, set REDIS_URL for caching. Otherwise, the in-memory cache fallback is used.
Use the Settings toggle "Enable wishlist" to turn all proxy endpoints on/off globally.
Verify storefront app proxy endpoints are working: `/apps/garden/v1/lists`, `/apps/garden/v1/status`, `/apps/garden/v1/recommendations`.
Optionally browse Customers to jump into customer records in Admin.