彭峰 6ba9834f99 fix(admin): verify sessions before automatic sign-out hai 1 semana
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design-qa 601bdc7231 fix: unify student read-only vocabulary access hai 1 mes
features ecf7098c2b fix(teaching): restore same-day lesson start with legacy servers hai 1 semana
migration 2c99c1a3ca fix(sync): retire foreign accounts and protect legacy identities hai 1 semana
operations 6ba9834f99 fix(admin): verify sessions before automatic sign-out hai 1 semana
qa 2eb3ab611f feat(admin): manage operator accounts and restore legacy admin access hai 1 mes
schema c662ca0168 fix: wrap cloud function business params hai 2 meses