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Two-tier service model the marketplace is priced and searched on. Admin catalog skeleton (categories + EAV option groups/values, addable as data not migrations; NULL category = cross-category) and the nurse pricing layer (nurse_service_variants — the atomic bookable unit: category + one value per required dimension at the nurse's own IRR price and price unit). - New `catalog` schema via one additive migration; Price BIGINT (no floats), on the wire as a string of digits; total = price + unit + session_count. - Duplicate-listing guard: deterministic option_set_hash + filtered UNIQUE(nurse_id, service_category_id, option_set_hash) WHERE deleted_at IS NULL + friendly 409 pre-check. One value per dimension; required groups (incl. cross-category) enforced; deactivate, never delete. - Public catalog browse cached behind a CatalogCache generation token, invalidated on any admin write. IVariantSnapshotSerializer shipped for b8. - Contract (catalog.md) + handoff + report published; swagger refreshed. 122 tests green; zero new build warnings. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Contracts — the shared interface between client/ and server/
The two projects are independent (no shared build). This folder is their single shared source of truth for everything that crosses the wire: API routes, request/response shapes, status codes, enums, shared flows, and money/format conventions. It lets a frontend agent build against a stable contract before, during, and after the matching backend phase, and it lets the two run in parallel.
Ownership (this is what makes parallel work safe)
- Backend owns and writes
contracts/domains/*andcontracts/openapi/*. A backend phase that ships an API writes/updates the contract in the same change. - Frontend reads contracts and derives its TypeScript types from them. The frontend never edits
files here. If a contract is missing or wrong, the frontend appends a request to
../shared-working-context/frontend/requests/for-backend.md; the backend delivers the fix in a later change.
What's here
| Path | What it is |
|---|---|
conventions/api-conventions.md |
The envelope, routing, pagination, errors, auth, locale — read first. |
conventions/money-and-types.md |
How money, dates, enums, gender, IDs are represented on the wire. |
domains/_TEMPLATE.md |
The shape every per-domain contract doc follows. |
domains/<domain>.md |
One file per domain (identity, catalog, booking, payments, …), added by the backend phase that ships it. |
openapi/ |
The published swagger.json snapshot(s) — the machine-readable contract for type generation. |
How a contract is produced (backend)
- Build the endpoints following
server/CONVENTIONS.md. - Write/extend
domains/<domain>.mdfromdomains/_TEMPLATE.md: every route, its method + snake_case path, auth/policy, request and response JSON (with a real example), the enums it uses, and the error cases. Reference, don't restate,conventions/*. - Publish the OpenAPI snapshot per
openapi/README.md. - Note in your handoff (
shared-working-context/backend/handoff/after-backend-phase-N.md) that the contract is live.
How a contract is consumed (frontend)
- Read
domains/<domain>.md+conventions/*. Derive types insrc/services/{domain}/types.ts(or generate fromopenapi/swagger.json) — keep names aligned with the contract. - If something is missing/ambiguous, request it (don't guess) and mock behind the
services/{domain}seam meanwhile.
Keep contracts versioned by being honest: when a shipped shape changes, update its
domains/*doc and the OpenAPI snapshot in the same change, and call it out in the handoff so the frontend re-syncs.