- Reorder layout: nav → calendar → legend → zoom bars → bottom bar
- Add "Calendar Legend" heading above source badges
- Fix getEventsForDate() to support multi-day range checking
- Render colored span bars across day cells for multi-day events
- Make showAccountModal/isSignedIn public on rstack-identity
- Tour final step triggers identity setup flow
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>