Add specialized row components for the new unified itinerary system:
- DayHeaderRow: Day number, date display, and add item button
- GameItemRow: Prominent card with sport color bar for games
- TravelItemRow: Gold-styled travel segments with drag handle
- CustomItemRow: Minimal custom items with icon, title, and optional time
All views follow existing Theme patterns and use SportColorBar for consistency.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
7700104597