Swaps default media storage from local FileSystemStorage to MinIO via
django-minio-backend, matching the rest of the Winsoo ecosystem
(advertising, campaign, wallet). Points at a local MinIO container
(added to docker-compose.yml) by default since no shared bucket is
provisioned yet. Existing ImageFields pick up the new storage backend
automatically — no model changes needed.
Verified against a live local MinIO container: bucket auto-creates on
first save, object lands under the expected key, URL resolves.
Django 6 + DRF resource server against the Gooyal accounts OAuth2 service,
matching the Winsoo ecosystem's conventions. Covers locations, stores,
catalog, cart, checkout/orders (with the multi-store-cart split and the
status stepper), reviews, and notifications, plus a demo-data seed command.
Payment integration (wallet debits, online gateway, seller payouts) is
intentionally left out here — see feature/payment.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>