Refactor trip planning: DAG router + trip options UI + simplified itinerary

- Replace O(2^n) GeographicRouteExplorer with O(n) GameDAGRouter using DAG + beam search
- Add geographic diversity to route selection (returns routes from distinct regions)
- Add trip options selector UI (TripOptionsView, TripOptionCard) to choose between routes
- Simplify itinerary display: separate games and travel segments by date
- Remove complex ItineraryDay bundling, query games/travel directly per day
- Update ScenarioA/B/C planners to use GameDAGRouter
- Add new test suites for planners and travel estimator

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

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

SportsTime/Core/Models/Domain/Sport.swift

@@ -4,6 +4,7 @@
 //
 
 import Foundation
+import SwiftUI
 
 enum Sport: String, Codable, CaseIterable, Identifiable {
     case mlb = "MLB"
@@ -34,6 +35,16 @@ enum Sport: String, Codable, CaseIterable, Identifiable {
         }
     }
 
+    var color: Color {
+        switch self {
+        case .mlb: return .red
+        case .nba: return .orange
+        case .nhl: return .blue
+        case .nfl: return .brown
+        case .mls: return .green
+        }
+    }
+
     var seasonMonths: ClosedRange<Int> {
         switch self {
         case .mlb: return 3...10  // March - October

SportsTime/Core/Services/StubDataProvider.swift

@@ -297,8 +297,21 @@ actor StubDataProvider: DataProvider {
         return Calendar.current.date(bySettingHour: hour, minute: minute, second: 0, of: dateOnly)
     }
 
+    // Venue name aliases for stadiums that changed names
+    private static let venueAliases: [String: String] = [
+        "daikin park": "minute maid park",                    // Houston Astros (renamed 2024)
+        "rate field": "guaranteed rate field",                // Chicago White Sox
+        "george m. steinbrenner field": "tropicana field",    // Tampa Bay spring training → main stadium
+        "loandepot park": "loandepot park",                   // Miami - ensure case match
+    ]
+
     private func findStadiumId(venue: String, sport: Sport) -> UUID {
-        let venueLower = venue.lowercased()
+        var venueLower = venue.lowercased()
+
+        // Check for known aliases
+        if let aliasedName = Self.venueAliases[venueLower] {
+            venueLower = aliasedName
+        }
 
         // Try exact match
         if let stadium = stadiumsByVenue[venueLower] {
@@ -313,6 +326,7 @@ actor StubDataProvider: DataProvider {
         }
 
         // Generate deterministic ID for unknown venues
+        print("[StubDataProvider] No stadium match for venue: '\(venue)'")
         return deterministicUUID(from: "venue_\(venue)")
     }