sdarbinyan 707db6d43c docs: backend contracts for Phases 5-7 (seller portal, server cart, reconciliation)
- Phase 5: Seller Portal from scratch (zero backend bytes exist today) -
  SellerOrganization/SellerUser/SellerMarketplaceMembership, all endpoints
  scoped server-side to the unified-orders Fulfillment model from Phase 2.
- Phase 6: server-owned Cart/CartLine/CheckoutSession, extending Phase 1's
  server-authoritative-amount contract into the cart itself. Replaces
  localStorage/Telegram-CloudStorage cart persistence.
- Phase 7: Refund and ReconciliationRecord entities, settlement contract.
  Flags additional payment providers (wallets/BNPL) as still an open
  business decision - not blocking, schema is provider-agnostic already.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-17 23:04:11 +04:00
2026-07-19 15:28:35 +04:00
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