test_week_span_sorting_chronological_by_day sorted its own inline copy
(day-of-month across years), so it kept passing after 7d2a314 made the
real Week sort chronological (full date, then time), and it disagreed
with production. Replace it with a test that calls sort_memories, and
add one for Day, so all three spans are pinned against the real sort.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Month sort keyed on the display day only. The sort is stable, so a
day's photos kept DB order, merged across libraries, and their times
jumped back and forth. Month now sorts like Week: full date, then
timestamp (undated items last).
The sort moves into sort_memories so it can be tested directly; the new
test covers a multi-library, out-of-order day.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Cameron CordesandClaude Opus 5.5