Migration 054: three indexes on calendar_events table:
- (calendar_id, start_datetime) for range queries
- (parent_event_id) for recurrence bulk operations
- (calendar_id, is_starred, start_datetime) for starred widget
Dashboard: replaced correlated subquery with single materialized
list fetch for user_calendar_ids in both /dashboard and /upcoming
handlers — eliminates 2 redundant subquery evaluations per request.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Kyle Pope
e12687ca6f