# Codex Pass 02 — Projects, Areas, Datasets

Goal: make the core domain usable through API.

Implement:

- project CRUD endpoints
- area creation with GeoJSON polygon validation
- area listing
- dataset registration
- dataset upload skeleton
- dataset metadata fields
- consistent error envelopes

Acceptance:

- User can create a project.
- User can attach an area.
- User can upload/register a dataset.
- Invalid geometry is rejected.