# strata-dev-artifacts

**Dev-tier mirror** of regen-able artifacts for [gerchowl/strata](https://github.com/gerchowl/strata) (Rust MC particle transport engine for PET).

## Tier discipline (ADR-049 §Part 6)

This dataset is the **rolling, latest-wins** complement to the consumer-facing [`gerchowl/strata-data`](https://huggingface.co/datasets/gerchowl/strata-data).

| | strata-data (consumer) | strata-dev-artifacts (this repo) |
|---|---|---|
| Cadence | calver-tagged per merge | rolling, latest-wins |
| Manifest | sha-pinned per file | none |
| Force-push | never | yes, freely |
| Stability | strict | none — internal-by-convention |
| Use | runtime loader, paper citation | dev box bootstrap, parity tests |

**Do not depend on this dataset's history.** If you need a specific snapshot, mirror to your own storage and pin a commit SHA.

## Contents

- `validation/results/` — G4 sidecar dumper reference CSVs (regen-able via `validation/geant4/` container)
- `validation/controlled/**/*_brep.strata` — BREP-encoded analytic geometries (regen-able via `pybridge/strata_vis/`)
- `gate2_golden/*.parquet` — parity-test golden fixtures (regen-able on anvil per ADR-053)

## Bootstrap on a fresh dev box

```bash
just bootstrap-dev-artifacts
# equivalent to:
# hf download --repo-type dataset --local-dir . gerchowl/strata-dev-artifacts
```

This lands the files into the gitignored paths the strata repo expects. None of these files are required to *build* strata — they're regen-able inputs to dev work (parity tests, geometry visualization, dumper reproduction).