Pool was 20+10 overflow per engine; uvicorn --reload leaked pools until
Postgres hit max_connections=100. Reduced to 5+5 with pool_pre_ping.
Grouped views (tags, people, colors, rated) now sort cards largest-first.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace Timeline-based grouped views (tags, colors, rated) with
dedicated card-grid components that drill into Timeline detail views
on click/Enter. Adds shared useCardGridNav hook for arrow-key
navigation across all four card grids (tags, colors, rated, people).
- TagsView, ColorsView, RatedView: card grid → inline Timeline detail
- PeopleView: migrated to same pattern (Timeline replaces custom grid)
- Tags endpoint: fall back to first associated photo for representative
- Filter store: add ratingMax for exact rating filtering in RatedView
- Timeline: remove tag/rating/color grouping; skip date headers when
groupBy != 'date' so detail views render flat grids
- SettingsDialog: bump z-index above Leaflet map layers
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
