def rebuild_release(manifest, batches):
    return {"release_id": str, "hash": str, "counts": dict, "lineage": dict}

1. release_id is a hash over schema version + normalized rows + batch order
2. the same manifest and batches produce the identical release_id and hash
3. counts report total, accepted, and rejected rows
4. lineage records the manifest id and the batch ids consumed
5. a declared batch that is missing returns {"error": "missing-batch:<id>"}
6. a row missing a required schema field is counted as rejected, not dropped

• the hash input includes the schema version — changing the schema changes the release
• batch order matters: the same batches in a different order are a different release
• rows are normalized (trimmed text) before hashing