{
  "build_assumption": "Rows are emitted grouped by backbone sequence in generator order.",
  "bundle_id": "PBAC-PEPTIDE-ACTH1-24-POMC-MC-ED2-FULL-BUNDLE-001",
  "canonical_row_store": "parquet",
  "catalog_id": "PBAC-PEPTIDE-ACTH1-24-POMC-MC-ED2-FULL",
  "completed_at_utc": "2026-06-26T13:16:25Z",
  "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": 100093,
  "first_sequence": "SYSMEHFRWGKPVGKKRRPVKVYP",
  "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": "SYSMEHFRWGKPVGKKRRPVKVWY",
  "max_shards_per_sequence": 2,
  "multi_shard_sequence_count": 6,
  "release_id": "PBAC-PEPTIDE-ACTH1-24-POMC-MC-ED2-FULL-V1",
  "row_schema_version": "pbac_peptide_row_v1",
  "sequence_count": 100093,
  "sha256": {
    "sequence_shard_index.jsonl.gz": "334029d64ff3ba863136cbe7e0c7f2e7e6099041db78f484674e2795e1ca2d6e"
  },
  "shard_count": 10,
  "shard_path_rule": "shards/{shard_id}/candidates.parquet",
  "source_config_hash_sha256": "b6b73d679bee515d92fe795eac2bcfb78b4ec0ecb97b58391d1fd9402f38af79",
  "source_row_count": 600558,
  "structure_key_version": "pbac-sk-v1"
}
