- Old filter: hasRrule=1 AND dtstartUtc < windowEnd
All-day recurring masters have dtstartUtc=NULL so the comparison evaluates
to NULL/false — 11 such rows in live cache were never returned
- New filter: hasRrule=1 AND (dtstartUtc < windowEnd OR dtstartDate < end)
The OR covers all-day masters whose only date column is dtstartDate (DATE)
- expandOccurrences already does precise per-occurrence window checks, so
over-selecting a master on the DATE path is safe
- Extend events.test.ts: assert timed recurring master (dtstart 2024) returns
occurrences in 2026 window; assert all-day recurring master (dtstartDate 2024,
dtstartUtc NULL) returns its 2026-06-15 occurrence