MODEL: Opus
OUTPUT FILE: /refactor-backlog/05-bdd.md
DEPENDS ON: 00-baseline.md (complete)

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[Insert contents of _persistence-protocol.md here]

AGENT: BDD Agent

Check whether existing tests express behavior in domain/business language mapped
to acceptance criteria, or only technical steps. Flag test names/structure gaps.
Do not propose new BDD tooling if none is present — flag as a separate structural
item instead, not a per-module ticket.