Replace the inline price + budget-category fields in the Transport and Reservation booking modals with a "Create expense" flow: the modal saves the booking, then opens the full Costs editor prefilled (name + category mapped from the booking type) and linked to the reservation. A booking with a linked expense shows it inline with edit / remove. Also fix the Costs editor so an expense with a recorded total but no payers (transport-derived or pre-rework items) opens with its amount, lets you set the currency, and saves - it previously showed 0 everywhere and could not be saved. Legacy / localized categories now map to the fixed keys, and changing a booking's type keeps its linked expense category in sync (unless it was manually set). - shared: reservation_id on budget create, typeToCostCategory helper, i18n keys - server: createBudgetItem stores reservation_id; keep total_price for payerless items; a booking update no longer wipes its linked expense and syncs the category on type change - client: shared BookingCostsSection, exported ExpenseModal with prefill and an editable total, page-level save-then-open wiring
@trek/shared
Single source of truth for TREK's API contracts, expressed as Zod schemas and consumed by both the server (request validation + inferred DTO types) and the client (typed requests/responses).
This package is part of the incremental NestJS + React 19 migration (see the "Brownfield Rewrite" board). It is intentionally dormant until modules start importing it — adding it changes nothing for users.
Rules
- One folder per domain:
src/<domain>/<domain>.schema.ts(+.spec.ts). - Domain-agnostic building blocks live in
src/common/. - A route is only considered migrated once its contract lives here.
- Schemas are the source of truth; server DTOs and client types are inferred from them
(
z.infer<typeof schema>), never hand-duplicated.
Consumption (dev)
Both apps resolve @trek/shared to this package's TypeScript source:
- Server (
tsx): viapathsinserver/tsconfig.json. - Client (
vite): viaresolve.aliasinclient/vite.config.ts(+pathsfor the type-checker).
Production packaging (Docker / workspace wiring) is introduced in card F2, when the server first depends on this package at runtime. Until then prod builds are untouched.
Not yet here
The canonical error envelope is finalised in card F5 (it must match TREK's current Express error responses byte-for-byte), so it is deliberately not invented in F1.