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No evento 'open', chama getBusinessProfile(selfJid) (fire-and-forget) — só contas Business retornam perfil (descrição/categoria/horário/etc.). Persiste Instance.isBusiness e emite 'instance:business' para o tenant. O SettingsPanel já exibe isBusiness lido de /api/instances. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>