Three integration tests against the real Postgres container pin the
v1.4.34 IW-G contract:
1. Ten concurrent /api/analytics reads against a cold cache fan into
a single builder call (misses === 1; remaining 9 split between
stampede joiners and warm-cache hits, with no second miss).
2. Priming analytics then writing a measurement evicts the cache —
the next read misses again and the response reflects the new row.
3. Compliance buckets re-read after an intake POST flush the cache
and surface the new taken-count.
Drops the unused _request parameter from buildAnalyticsResponse() so
the analytics route lints clean. CHANGELOG carries one Added line per
the marathon's user-facing voice rules.
Marc-André Bombeck
bcdab48e96