Pulls events off the new order_events table and shows them as a timeline
block in the order detail view: Paid, Label created, In transit,
Delivered (etc) with timestamps. Filters out ops-only events like
payment_critical, label_orphaned, and tracking_marked_manually so the
customer never sees internal plumbing.
DisplayLabel on OrderEvent decides what's customer-visible and what's
redacted, so the same order_events rows can later power an admin view
with no filter.
