# Codex Pass 04 — Dataset Manager

## Goal

Implement dataset upload and metadata foundation.

## Must implement

- upload endpoint;
- local storage path based on storage architecture;
- metadata extraction scaffold;
- dataset record persistence;
- type detection for vector/raster by extension;
- safe file name handling;
- tests using fixtures.

## Must not implement

- heavy raster clipping;
- external provider download;
- AI inference.

## Output

Use `docs/M6_FINAL_HANDOFF_TEMPLATE.md`.