Two fixes for route planning and display:
1. GameDAGRouter: Same-day game transitions now respect maxDailyDrivingHours
constraint. Previously, a 12:05 AM game in Arlington could connect to an
11:40 PM game in Milwaukee (19+ hour drive) because the code only checked
available time, not the 8-hour daily limit.
2. TripDetailView: Itinerary sections now group by (day, city) not just day.
Games in different cities on the same calendar day are shown as separate
sections with travel segments between them.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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