Maurice
c8eb510bd4
A new Nest domain plans the legs of a ski and winter tour on the runs, lifts, cross-country trails, ski touring and winter paths the Places host builds from OpenStreetMap, one SGR1 graph per ski area. TREK fetches the index once, downloads an area by its id when a planner first plans in it, checks it against the index's SHA-256 and keeps it in data/ski; no clicked point ever leaves the server. A leg whose area is slower than two seconds answers loading, and an older copy stands in while the host is down. The reader decodes the writer's golden file byte for byte, including the two edge flags it added (area_has_run, type_unknown). The search is A* in a worker thread over a profile per discipline (alpine, snowboard, cross-country by technique, touring, snowshoe, winter hike) with the times and penalties of the cost model, up to five snap candidates per point, lift stations as entry points, legs that go on from each other, pieces of a split network stitched by their boundary nodes, other ways by the penalty method, and a failed leg explained by relaxing one rule at a time (difficulty, lift class, technique, riding down, uphill) without ever handing out the relaxed line. POST /api/trips/:tripId/ski/route, GET .../ski/area-near and GET .../ski/network/:areaId sit behind Tours and the trip, with plan_ski_route as their MCP twin. A daily job looks for a new build and sweeps areas unused for 90 days. The admin switch ski_routing_enabled is on wherever TREK Places is.
@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.