The narrows and aggregates queries in summaries-slice computed
windowed avg/slope/r2 against the full measurements partition,
scanning ~450 k rows for an active user and discarding 95 %
inside FILTER clauses. The outer WHERE now matches the inner
window cap. Expected: 9 s → 0.5–1 s. Closes M0 in v1.4.48 backlog.
The rollup-fresh `narrows` query already shipped the outer cap in
v1.4.47.1. This commit extends the same fix to the cold-fallback
path by splitting the heavy single-statement aggregate into two
parallel queries:
- `allTime` — keeps the full-partition scan for COUNT / MIN /
MAX / AVG so all-time counts stay correct.
- `windowed` — carries the 7/30/90-day avg / slope / r² columns
and takes the new outer 90-day cap. Every row excluded by the
cap was already aggregating to NULL inside its FILTER, so the
output is bit-identical.
Tests in `summaries-slice.test.ts` are updated to mock both query
shapes; a new "90-day outer measured_at cap" describe block pins
the SQL contract so a future refactor that drops the cap fails
loudly.
Marc-André Bombeck
90487e31ca