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>
Shared working context — the parallel-agent handoff
This folder lets a backend agent and a frontend agent work at the same time without ever
editing the same file. It is the running, append-only record of what each side has done and what it
needs from the other. (Stable API shapes live in ../contracts/; this folder
is the running coordination on top of them.)
Lane ownership — the one rule that keeps it safe
Each lane writes only its own files. Neither lane edits the other's.
| Lane | Writes (only) | Reads |
|---|---|---|
| Backend | backend/STATUS.md, backend/handoff/after-backend-phase-N.md (new file per phase), reports/backend-phase-N-report.md, reports/mocks-registry.md |
frontend/requests/for-backend.md, prior backend handoffs |
| Frontend | frontend/STATUS.md, frontend/requests/for-backend.md (append), reports/frontend-phase-N-report.md |
backend/handoff/*, ../contracts/*, prior frontend reports |
Because each handoff is a new file per phase and each STATUS/requests file is append-only, two agents can run concurrently and only ever append — no merge conflicts, no clobbering.
Layout
shared-working-context/
├── backend/
│ ├── STATUS.md # append: one block per backend phase (what shipped, gate status)
│ └── handoff/
│ └── after-backend-phase-N.md # "context for frontend after backend phase N" (one per phase)
├── frontend/
│ ├── STATUS.md # append: one block per frontend phase
│ └── requests/
│ └── for-backend.md # append: contract gaps / shape requests the backend should fulfil
└── reports/
├── README.md # the per-phase report template
├── mocks-registry.md # master list of every mock/seam + how to make it real (backend-owned)
├── backend-phase-N-report.md # what was built / testable / mocked (one per backend phase)
└── frontend-phase-N-report.md # one per frontend phase
The handoff note (backend → frontend), per phase
backend/handoff/after-backend-phase-N.md should answer, for the frontend agent:
- Which endpoints/contracts are now live (link the
contracts/domains/*doc + the swagger snapshot). - What the frontend can now build because of this phase.
- What is mocked server-side (so the frontend knows responses are fake-but-shaped) and what's real.
- Any auth/enum/format detail the frontend must mirror.
- Open questions / things the frontend should not assume yet.
The request note (frontend → backend)
frontend/requests/for-backend.md is where the frontend appends: missing endpoints, fields it needs,
shape mismatches, pagination/filter needs — anything that should land in a later backend change. The
backend agent reads this at the start of each phase. The frontend never edits backend code to "fix" it.