Round-1 review F1 (maintainer decision: variant A). The store-side
empty-guard's `context?.intentionalClear === true` branch was dead:
`intentionalClear` is never set in production (connection context is
{user, actor, aiChatId}); it appeared only in the guard and a hand-injected
spec, so the guard already blocked empty-over-non-empty unconditionally.
- persistence.extension.ts: drop the dead branch; the guard now simply
skips empty-over-non-empty, full stop. Reference issue #251 (real
intentional-clear UX) in the comment where the branch was.
- persistence-store.spec.ts: remove the misleading "persists an intentional
clear" escape-hatch test (false coverage — green only because the flag was
injected by hand). Real guard tests (empty-over-empty allowed,
empty-over-non-empty blocked, etc.) kept.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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