A partner integration request landed for programmatic merchant-hierarchy management (Company/Project/Store/PaymentPoint). Built the answer generically: partner-specific behaviour is a PartnerProfile config row, and no partner name appears in any entity, field, endpoint or status value. New: - docs/backend/PARTNER-PROVISIONING-API-CONTRACT.md - hierarchy, idempotency, node-scoped public-key credentials, TEST/LIVE partition, routing context - docs/context/adrs/ADR-0003-generic-partner-provisioning-api.md Amended, because the schema impact must land before Phase 1 is implemented: - Phase 1 gains RoutingContext on CheckoutSession/PaymentIntent/Payment, frozen at checkout-session creation and immutable after - Phase 7 gains routing on Refund/ReconciliationRecord, plus the rule that seller settlement splits happen after routing, never as a hierarchy level - Phase 9 gains Company/Project above Marketplace and PaymentPoint below it, with a backfill sequence for existing marketplaces - Track S gains partner credentials: public key only, node-scoped authority, rotation with overlap, immediate revoke, audit coverage Also: Track P (P1-P10) in the delivery plan, and backend ownership closed as answered across the contract set. Card payment was checked, not added - qr and card both already ship in cart.component.ts with separate create paths and status pollers. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Backend Contracts Index — Product Plan v3.1
New here? Start with BACKEND-HANDOFF.md — reading order, current infrastructure state, auth surface, and what a working dev environment still needs.
This directory is the complete set of wire contracts for building the backend behind Product Plan v3.1. Each doc specifies entities, endpoints, and invariants only — never DB schema or service boundaries, which stay backend's own call.
Read order matches build order. Every doc after Phase 1 depends on the ones before it (noted at the top of each). All Sprint 0.1 decisions referenced throughout were answered 2026-08-17 — see PRODUCT-PLAN-v3.1-DELIVERY-PLAN.md Sprint 0.1 for the full record.
Launch-gate phases (P0 — required before production)
| Doc | Covers | Status |
|---|---|---|
| PHASE-1-MONEY-FX-PAYMENTS-CONTRACT.md | Money model, FX quote, price snapshot, server-authoritative checkout amount, payment state machine | Ready |
| PHASE-2-ORDERS-NOTIFICATIONS-CONTRACT.md | Canonical Order/OrderLine/Fulfillment (unified multi-seller), event bus, Notification Center | Ready |
| PHASE-3-CATALOG-OFFER-FULFILLMENT-CONTRACT.md | Product/Offer split, inventory/reservations, publish-time executability | Ready |
| PHASE-4-CONNECTOR-FRAMEWORK-CONTRACT.md | Generic external-order connector framework (no fixed marketplace list) | Ready |
Post-launch-gate phases (P1/P2)
| Doc | Covers | Status |
|---|---|---|
| PHASE-5-SELLER-PORTAL-CONTRACT.md | Seller org/user/membership, seller-scoped order/fulfillment views | Ready |
| PHASE-6-CART-CHECKOUT-CONTRACT.md | Server-owned cart, checkout session | Ready |
| PHASE-7-PAYMENTS-RECONCILIATION-CONTRACT.md | Refunds, reconciliation, settlements | Ready |
| PHASE-8-IDENTITY-MESSAGING-CONTRACT.md | Customer identity, VK ID (built first), OTP, MAX/Telegram bots, Notification Orchestrator | Ready |
| PHASE-9-TENANT-REGISTRY-DOMAINS-CONTRACT.md | Marketplace registry, Hostinger DNS automation, publish/revision model | Ready |
| PHASE-10-CONTENT-MODULES-CONTRACT.md | Gorbushka-class mall/directory content entities | Ready, lowest priority |
Cross-cutting tracks
| Doc | Covers | Status |
|---|---|---|
| TRACK-A-ANALYTICS-CONTRACT.md | Event pipeline, funnel, operational/quality metrics, synthetic-traffic separation | Ready — start alongside Phase 1, longest lead time |
| TRACK-S-SECURITY-RBAC-CONTRACT.md | 17 roles/3 scopes, enforcement, audit log, secrets, rate limiting, step-up auth | Ready — gates the launch |
| PARTNER-PROVISIONING-API-CONTRACT.md | Inbound partner API: merchant hierarchy provisioning, idempotency, public-key credentials, payment routing context | Draft — mapping decided, needs Company/Project entities |
What is deliberately not in this directory
- API namespace migration — Sprint 0.1 decision: new endpoints only use
/api/v2/...etc; legacy endpoints (/cart,/orders,/items) are not being migrated as part of this contract set. SeeBACKEND-API-REFERENCE.mdfor the current live surface. - Per-connector adapters (Ozon, Wildberries, etc.) — Sprint 0.1 decision: no fixed list. Phase 4 §8 is the onboarding runbook; each partner's adapter is written when that partner is actually onboarded.
- Additional payment providers (wallets, BNPL) — open business decision, not yet made. Phase 7 §4.
One open item across all of these
Backend ownership — answered 2026-08-18. A separate backend developer implements against these contracts. This repository's team owns the frontend and owns this contract set — the docs here are the handoff surface between the two, so a change to any contract is a change both sides must see. Keep them current; they are not a one-time deliverable.