See [maintenance and backup repairs](MAINTENANCE-REPAIRS.md) for the editor
replacement, server validation, bounded-memory backups, and regression coverage.
See [club tenancy and account access](MULTI-TENANCY.md) before deploying the
tenant migration, Super System Administrator role, club invitations and tickets.
See [tenant invitation and ticket repairs](TENANT-REPAIRS-2026-10-20.md) for the
invitation-role fix, transaction retries, Unicode limits, ticket paging and tests.
See [administrator security and capacity](SECURITY-CAPACITY-2026-10-20.md) for mandatory MFA, session expiration, bounded collections, shared club budgets, and the required new migration/key configuration.