# Codex Phase 2 Prompt — Dataset Manager + Raster/Vector Metadata

Read first:

- `docs/DATA_CATALOG.md`
- `docs/RASTER_OPERATIONS_SPEC.md`
- `docs/VECTOR_OPERATIONS_SPEC.md`
- `docs/API_SPECIFICATION.md`
- `docs/STORAGE_ARCHITECTURE.md`

## Mission

Implement dataset upload and metadata extraction for raster and vector data.

## Required features

- Upload endpoint for datasets.
- Save original file unchanged.
- Compute checksum.
- Detect raster vs vector.
- Extract raster metadata with Rasterio.
- Extract vector metadata with GeoPandas/Fiona.
- Store metadata in dataset record.
- Generate basic preview for raster if feasible.
- Add tests with small fixtures.

## Rules

- Do not require external production datasets for tests.
- Use small test fixtures.
- If GDAL/Rasterio dependency issues exist, document clearly and keep code structured.
- Do not fake metadata.