Extends the existing /api/v2/event beacon into a small, typed, durable event
schema so the interactive views can answer product questions the request log
cannot: whether a visitor ever gets a location, whether search finds anything,
which controls and views earn their maintenance, and which dead ends people
actually hit.
Seven events with three enum dimension slots, stored as hourly aggregates in a
TimescaleDB hypertable plus one JSONL line per event for the 30-day Loki view.
No row per interaction and no column an identifier could go in: no cookie, no
session id, no user id, no IP, no coordinates, no free text, no URLs. The IP is
a per-minute rate-limit key and nothing else.
Abuse resistance for a public endpoint on a 60%-crawler site: closed allowlist
(unknown names collapse to one bucket), 4 KB streaming body cap, per-IP ceiling
raised to 120/min (30 was sized for four coarse events and would have silently
truncated a batched stream), soft Sec-Fetch-Site first-party check, uniform 204.
Ships inert -- THERMOGRAPH_EVENTS gates both the recorder and the flag stamp on
<html> that makes the client send anything, and is unset everywhere. See
UI-EVENTS.md for the schema, the rejected transport/storage alternatives, and
the privacy decisions that must be settled before the flag is turned on.
Steady-state usage of the Open-Meteo API is removed; it remains only as a dormant fallback. Geocoding -> local GeoNames + Nominatim; wind gusts -> Meteostat; history -> NASA POWER (curated cells seeded with keyless ERA5); recent+forecast -> NASA range + MET Norway. Plus a drift-check tool comparing NASA vs Open-Meteo. All keyless, no new infra. Backend suite green in-image (gate).
