disembark calls the packed lifeboat a 'snapshot'; the lifeboat glossary entry forbids 'snapshot' as a synonym

disembark calls the packed lifeboat a 'snapshot'; the lifeboat glossary entry forbids 'snapshot' as a synonym

A terminology drift (severity nitpick) found by the cross-document consistency pass.

• End A: .abcd/development/brief/04-surfaces/02-disembark.md:280 — "the previous snapshot is replaced and its manifest remains in the voyage log"
• End B: .abcd/development/brief/glossary/core/lifeboat.md:6 — "forbidden_synonyms: ["backup", "archive", "snapshot", "checkpoint"]"

core/lifeboat lists snapshot among the words that must not substitute for lifeboat. 02-disembark's acceptance says a new snapshot lands at the destination and the previous snapshot is replaced, using the forbidden word for the lifeboat itself.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 319.