A live-updating feed of HawkEx.Events broadcasts (subscription, audit,
and CSV export events) received over the host application's configured
PubSub. Supports pausing the feed — buffering a "N new" count without
rendering — and filtering by event name prefix (subscription, csv,
audit, or all).
Requires config :hawk_ex, pubsub: .... Without it, HawkEx.Events is a
no-op and this page simply shows no events.
Mounted at /hawk_ex/events.