{
  "build_assumption": "Rows are emitted grouped by backbone sequence in generator order.",
  "bundle_id": "PBAC-PEPTIDE-ENDOMORPHIN1-OPIOID-ED2-FULL-BUNDLE-001",
  "canonical_row_store": "parquet",
  "catalog_id": "PBAC-PEPTIDE-ENDOMORPHIN1-OPIOID-ED2-FULL",
  "completed_at_utc": "2026-06-26T13:20:30Z",
  "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": 2243,
  "first_sequence": "YPWF",
  "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": "YPYY",
  "max_shards_per_sequence": 1,
  "multi_shard_sequence_count": 0,
  "release_id": "PBAC-PEPTIDE-ENDOMORPHIN1-OPIOID-ED2-FULL-V1",
  "row_schema_version": "pbac_peptide_row_v1",
  "sequence_count": 2243,
  "sha256": {
    "sequence_shard_index.jsonl.gz": "84d0bbaad6f3f7ceb044954f52c725b4e2921dc2dce3626bd455f75a12d2ad8c"
  },
  "shard_count": 1,
  "shard_path_rule": "shards/{shard_id}/candidates.parquet",
  "source_config_hash_sha256": "3d4ad2f9248bd4e82386b7777f793da70023ba58eed2d50877ba62d967ccc0c6",
  "source_row_count": 13458,
  "structure_key_version": "pbac-sk-v1"
}
