Adds an in-app assistant that reads and plans the open trip. Users connect their own provider (Sign in with ChatGPT, or an Anthropic, OpenAI, Gemini or OpenRouter key) or use the one the admin set up, including a custom OpenAI-compatible server. It is an addon and only shows while a connection is usable. The chat runs on the existing MCP tools, pinned to the trip. Every change is held as a change card the user applies or discards, and applied changes can be undone. On the desktop it is a floating window that can be moved and resized; on the phone it is fullscreen. Search results show as place cards that can go onto a day, weather lookups as a strip, proposed places as ghost markers on the map with a before/after switch, and an answer can be shared into the trip chat. Booking files can be dropped in and are read into change cards.
@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.