TierBusiness: Pro's feature set, 365-day history retention, uncapped
core monitoring like every self-hosted tier, Business display name, and
a slot in the min-tier ordering. Differentiation is by max_users limit,
retention, and support rather than features (multi-user is already a Pro
capability via RBAC; see specs/pricing-segmentation.md binder findings).
Dormant until the license server issues business plan versions; no
checkout, pricing, or UI surface references it yet. Contract shape
recorded as cloud-paid Extension Point 26 and pinned by
TestBusinessTierContractShape.