The file carried an identifier minted by the retired local hub while central
held a different record for the same file — ADR-010's same-filename,
different-UUID duplicate-registration class.
Central is authoritative (ADR-010 decision 1) and decision 6 says to mitigate
by changing the repository file rather than editing central, so the file adopts
central's id. The cache-side id dies with the cache.
Refs CUST-WP-0068
Add archive terminology note tool, extend scan allowlist for generated
trees, mark remaining tasks done, and add grandfather notes to archived
workplans in this repo.
