Spree Multi-Store, Markets, Marketplace

Before writing code

Fetch live docs:

1. Fetch https://spreecommerce.org/docs/use-case/multi-store/model for the multi-store data model.
2. Fetch https://spreecommerce.org/docs/use-case/marketplace/model for the marketplace use case (Enterprise).
3. Fetch https://spreecommerce.org/docs/use-case/multi-tenant/multi-tenant-model for SaaS-style isolation.
4. Check the v5.4 announcement for the Market model details (https://spreecommerce.org/announcing-spree-commerce-5-4/).
5. Inspect Spree::Store and Spree::Market source for current column shapes and associations.

Conceptual Architecture

Multi-Store: One Install, Many Brands