# Pass 02 — Domain and Database Foundation Final Prompt

Implement database/domain foundation after backend health is stable.

Required deliverables:

- SQLAlchemy setup;
- Alembic setup;
- PostGIS-compatible geometry model strategy;
- models for Project, Area, Dataset, AnalysisRun, Detection, Metric, Export;
- Pydantic schemas;
- migration instructions;
- tests for model import and schema validation.

Rules:

- Follow `CANONICAL_DOMAIN_MODELS.md`.
- Follow `STATE_MACHINES.md`.
- Do not store geospatial data as arbitrary JSON when a PostGIS geometry column is the correct target.
- If local PostGIS is unavailable, provide graceful test fallback but keep production target PostGIS.