Both paths read identical fixtures — per-(day, source) DAY rollup rows
derived from the same raw rows the fallback reads — and must produce
equivalent daily series: the plain daily-mean case, the multi-source
day (the all-source weighted mean, never a ladder-collapsed single
source), and the pre-sum_value mean-times-count compose. A far-from-UTC
profile timezone must force the raw path so day keys stay profile-tz
keyed; the near-UTC midnight band's single-day attribution shift is
pinned explicitly so it stays a documented decision rather than drift.
Coverage misses and empty in-window bucket reads fall back per channel;
sleep and the cumulative types never enter the rollup query.
Every assertion family was broken on purpose and observed failing with
the site named before restoring green; the record sits in the test's
doc comment. The route test mocks the new coverage probe and bucket
read as empty so every channel rides the raw path unchanged there.
Marc-André Bombeck
f9ac7a3327