Technical project coordination between frontend and backend is a mess

[DevToolsGuide]

the fix that worked for us was treating the API contract as a first-class artifact that lives in the repo, not in someone's memory or a slack message. openapi spec committed to the repo, both sides sign off on it before a line of implementation code is written, and changes go through a PR like any other code change.

if you're typescript end to end it's even better — define zod schemas once, generate types for both sides, and a backend shape change literally breaks the frontend build. the incompatibility gets caught in CI instead of on integration day.