# Building the processed dataset from `raw/`

The repository is self-contained for reconstructing the processed release.

## Inputs

- Raw snapshot: `raw/`
- Dataset ID: `stwistzz/Sudoku_DLM_Reasoning`
- Release seed: `0`
- Upstream revision: `527859f62c745c16833aded130ad9f9ddddb76af`

First verify that the raw files match `metadata/raw_manifest.json`. Then run the
builder from the repository root:

```bash
python scripts/build_dataset.py \
  --source-dir raw \
  --output-dir rebuilt-release \
  --dataset-id stwistzz/Sudoku_DLM_Reasoning \
  --seed 0
```

The builder performs two full source scans. It validates formats and clues,
protects all upstream test IDs, removes exact and digit-renaming-equivalent
cross-split overlap, allocates metadata-stratified quotas, selects by seeded
SHA-256 rank, validates every selected Sudoku solution, and writes Parquet plus
machine-readable audits.

Verify the result independently:

```bash
python scripts/verify_dataset.py rebuilt-release   --expected-version 1.1.0   --expected-seed 0
```

The expected processed split hashes are recorded in `metadata/manifest.json`.
Timestamp fields may differ across rebuilds; the Parquet content hashes must not.