{
  "build_assumption": "Rows are emitted grouped by backbone sequence in generator order.",
  "bundle_id": "PBAC-PEPTIDE-BAM8-22-PENK-OPIOID-ED2-FULL-BUNDLE-001",
  "canonical_row_store": "parquet",
  "catalog_id": "PBAC-PEPTIDE-BAM8-22-PENK-OPIOID-ED2-FULL",
  "completed_at_utc": "2026-06-26T14:51:49Z",
  "entry_semantics": "Each entry maps one backbone sequence to every candidate shard that may contain exact asset rows for that sequence. The Parquet shard remains canonical.",
  "expected_sequence_count": 38191,
  "first_sequence": "VGRPEWWMDYQKRYG",
  "generator_version": "0.1.0",
  "index_builder_version": "0.1.0",
  "index_file": "sequence_shard_index.jsonl.gz",
  "index_schema_version": "pbac_sequence_shard_index_manifest_v1",
  "index_type": "sequence_to_candidate_shards",
  "last_sequence": "VGRPEWWMDYQKRWY",
  "max_shards_per_sequence": 2,
  "multi_shard_sequence_count": 2,
  "release_id": "PBAC-PEPTIDE-BAM8-22-PENK-OPIOID-ED2-FULL-V1",
  "row_schema_version": "pbac_peptide_row_v1",
  "sequence_count": 38191,
  "sha256": {
    "sequence_shard_index.jsonl.gz": "f02540d98580412d5cc95d167ca6fca28f02d0efbbe56ec830c3490d36dc8e3c"
  },
  "shard_count": 4,
  "shard_path_rule": "shards/{shard_id}/candidates.parquet",
  "source_config_hash_sha256": "f24081e2e14f4d966b5f6443ff4689649a94b9e8cd93e56b2d3e1ecf58a830cf",
  "source_row_count": 229146,
  "structure_key_version": "pbac-sk-v1"
}
