Expose confirmed drawing work IDs in metadata and Dataset Viewer
Confirmed drawing relationships currently require joining a separate registry. This adds work_id immediately after record_id in both active metadata indexes and Dataset Viewer configurations, bringing each to 35 fields.
The column copies exactly 360 existing owner-confirmed recording links across 37 drawings. The other 471 recordings remain blank/null. Work_Identity remains authoritative: registry rows, IDs and confirmation history are unchanged. All prior 34 field values, media bytes, filenames and download URLs are preserved. Membership does not imply recording-set completeness or gapless capture.
A reproducible projection validates registry joins, confirmation receipts and uncertainty. Regression checks reject conflicting or unsupported assignments, stale display values, missing/inactive identities and malformed inputs. Timing-column regeneration preserves the adjacent identity fields, and the historical Timing v1 validator still reconstructs its exact original metadata checksum.
Validation: 105 repository tests, all 831 metadata rows, 16 exact pinned Timing v2 input receipts, and both local VideoFolder configurations with all 35 fields and work-ID nulls. Local loading uses empty placeholders with decoding disabled; hosted cache readiness is checked separately after merge.
This updates the prepared, untagged v0.7.0 manifest in the same PR. Existing release tags, historical manifests, DOI and website remain unchanged.