# Changelog

## v0.2.0 — Release candidate

Base repository revision:
`339e6149de130cbe2d001f7a0e5247872bc788ec`

### Metadata contract

- Added persistent `record_id` values for all 338 canonical records.
- Added `collection_tier`, `is_canonical`, and
  `acquisition_protocol_version`.
- Normalized canonical multi-value `tool` and `medium` fields from pipes to
  semicolons.
- Defined tool and medium fields as independent ordered unique lists rather
  than unsupported positional pairs.
- Preserved every canonical file path, content hash, technical property, and
  provenance value from the pinned source index.
- Removed one pre-standard metadata row whose corresponding media is not
  distributed because the required ownership and provenance threshold was not
  met. No identifying local path or content hash is published for the excluded
  holding.
- Added complete canonical rows for three previously unindexed Standard files.
  Their local inbox SHA-256 values exactly match the current Hub LFS identities;
  stream metadata was extracted from those matching bytes.

### Documentation

- Distinguished archive scope from currently published video coverage.
- Documented that the default Hub `train` split is not an official experiment
  split.
- Distinguished capture orientation from stored encoded orientation.
- Added intended-use, unsupported-use, bias, privacy, incidental-rights, audio,
  access, citation, and reproducibility guidance.
- Documented missing temporal and physical calibration required for rigorous
  motor-control measurement.

### Validation

- Added `tools/repair_metadata.py` for the reproducible v0.1-to-v0.2 transform.
- Added `tools/validate_metadata.py` for identity, schema, technical-field,
  orientation, duplicate, and Viewer-path checks.
- Retained the 465-row pinned Dataset Viewer snapshot as a historical base
  audit input. Final revised membership is validated against the PR repository
  tree because the Viewer has not yet rebuilt from the amended indexes.
- Reconciled the repository tree with both active indexes: 338 indexed
  canonical records and 129 published pre-standard records, both with
  one-to-one row/file coverage.
- Added `tools/metadata_additions_v0.2.csv` so the 338-row index regenerates
  deterministically from the pinned 335-row source plus 3 audited additions.

### Media payload

- No video was downloaded, moved, deleted, renamed, transcoded, or replaced.
- No audio stream was modified.
- No historical relationship was inferred or promoted.

### Deferred

- Formal Hub configurations separating `canonical` and `pre_standard` remain
  pending a Viewer-build test because canonical media and provenance holdings
  share a directory subtree.
- Technical ingestion of 129 pre-standard records remains incomplete.
- Public ingestion of the 2012–2016 livestream layer remains pending.
- No lightweight proxy-video release is included in this metadata-only change.