Refactor travel segments and simplify trip options

Travel segment architecture:
- Remove departureTime/arrivalTime from TravelSegment (location-based, not date-based)
- Fix travel sections appearing after destination instead of between cities
- Fix missing travel segments when revisiting same city (consecutive grouping)
- Remove unwanted rest day at end of trip

Planning engine fixes:
- All three planners now group only consecutive games at same stadium
- Visiting A → B → A creates 3 stops with proper travel between

UI simplification:
- Remove redundant sort options (mostDriving/leastDriving, mostCities/leastCities)
- Remove unused "Find Other Sports Along Route" toggle (was dead code)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Core/Services/CloudKitService.swift

@@ -145,12 +145,19 @@ actor CloudKitService {
 
                 guard let homeRef = record[CKGame.homeTeamRefKey] as? CKRecord.Reference,
                       let awayRef = record[CKGame.awayTeamRefKey] as? CKRecord.Reference,
-                      let stadiumRef = record[CKGame.stadiumRefKey] as? CKRecord.Reference,
                       let homeId = UUID(uuidString: homeRef.recordID.recordName),
-                      let awayId = UUID(uuidString: awayRef.recordID.recordName),
-                      let stadiumId = UUID(uuidString: stadiumRef.recordID.recordName)
+                      let awayId = UUID(uuidString: awayRef.recordID.recordName)
                 else { return nil }
 
+                // Stadium ref is optional - use placeholder if not present
+                let stadiumId: UUID
+                if let stadiumRef = record[CKGame.stadiumRefKey] as? CKRecord.Reference,
+                   let refId = UUID(uuidString: stadiumRef.recordID.recordName) {
+                    stadiumId = refId
+                } else {
+                    stadiumId = UUID() // Placeholder - will be resolved via team lookup
+                }
+
                 return ckGame.game(homeTeamId: homeId, awayTeamId: awayId, stadiumId: stadiumId)
             }