- Export EmailStatus enum from db-types.ts
- Add verifyTenantEmail server action
- Add unsubscribeTenantEmail server action
- Both actions update current and all subsequent matching locations
- Match criteria: userId, name, tenantEmail, yearMonth >= current
- Share-id validation using existing shareChecksum utilities
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>