Phase 3: Visual Flattening
- Analyzed existing flatten implementation in ItineraryTableViewController
- Documented current bucket-based approach (beforeGames/afterGames)
- Recommended pure sortOrder-based sorting within each day
- Identified ItineraryFlattener extraction for testability
- Documented determinism test patterns
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>