v2.12.1

Changed

• uld_lookup description now states provenance is verified, not pending. The ULD dataset's provenance was reconciled to verified after all 16 records were cross-checked against ≥4 independent authoritative sources each (AKE at 6/6), so the tool's "Limitations" line no longer says "provenance pending independent verification" — it now reads that the specs are compiled from manufacturer and carrier-published sources and provenance-verified against ≥4 independent sources per record, while noting airline-specific ULD variants still differ (confirm operationally critical dimensions with the carrier). The response envelope's _source.provenance_status for uld_lookup returns verified accordingly. Docs-only patch — no tool, schema, or behaviour change; airline_lookup, container_lookup and vehicle_lookup keep their pending-verification limitation lines. Keeps the hosted /api/mcp description (generated from this package) in sync with the website envelope — FAULT-13 distribution sync.