Cover per-tier spend limits, event limits (metered, never blocks ingestion),
connection caps, and retention windows. Explain the three enforcement
mechanisms in plain terms without the internal state-machine names: what
happens as you approach a limit (warning), what happens if you go over
(spend-limit enforcement pausing new data collection, not deleting
anything), and that account suspension is a manual, staff-only action —
never something that happens automatically from usage alone.
