Add region-based filtering and route length diversity

- Add RegionMapSelector UI for geographic trip filtering (East/Central/West)
- Add RouteFilters module for allowRepeatCities preference
- Improve GameDAGRouter to preserve route length diversity
  - Routes now grouped by city count before scoring
  - Ensures 2-city trips appear alongside longer trips
  - Increased beam width and max options for better coverage
- Add TripOptionsView filters (max cities slider, pace filter)
- Remove TravelStyle section from trip creation (replaced by region selector)
- Clean up debug logging from DataProvider and ScenarioAPlanner

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

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

SportsTime/Features/Trip/ViewModels/TripCreationViewModel.swift

@@ -86,6 +86,10 @@ final class TripCreationViewModel {
     var numberOfDrivers: Int = 1
     var maxDrivingHoursPerDriver: Double = 8
 
+    // Travel Preferences
+    var allowRepeatCities: Bool = true
+    var selectedRegions: Set<Region> = [.east, .central, .west]
+
     // MARK: - Dependencies
 
     private let planningEngine = TripPlanningEngine()
@@ -273,10 +277,6 @@ final class TripCreationViewModel {
             await loadScheduleData()
         }
 
-        // Read max trip options from settings (default 10)
-        let savedMaxOptions = UserDefaults.standard.integer(forKey: "maxTripOptions")
-        let maxTripOptions = savedMaxOptions > 0 ? min(20, savedMaxOptions) : 10
-
         // Build preferences
         let preferences = TripPreferences(
             planningMode: planningMode,
@@ -297,7 +297,8 @@ final class TripCreationViewModel {
             lodgingType: lodgingType,
             numberOfDrivers: numberOfDrivers,
             maxDrivingHoursPerDriver: maxDrivingHoursPerDriver,
-            maxTripOptions: maxTripOptions
+            allowRepeatCities: allowRepeatCities,
+            selectedRegions: selectedRegions
         )
 
         // Build planning request
@@ -451,6 +452,17 @@ final class TripCreationViewModel {
         availableGames = []
         isLoadingGames = false
         currentPreferences = nil
+        allowRepeatCities = true
+        selectedRegions = [.east, .central, .west]
+    }
+
+    /// Toggles region selection. Any combination is allowed.
+    func toggleRegion(_ region: Region) {
+        if selectedRegions.contains(region) {
+            selectedRegions.remove(region)
+        } else {
+            selectedRegions.insert(region)
+        }
     }
 
     /// Select a specific itinerary option and navigate to its detail
@@ -465,9 +477,6 @@ final class TripCreationViewModel {
 
     /// Convert an itinerary option to a Trip (public for use by TripOptionsView)
     func convertOptionToTrip(_ option: ItineraryOption) -> Trip {
-        let savedMaxOptions = UserDefaults.standard.integer(forKey: "maxTripOptions")
-        let maxOptions = savedMaxOptions > 0 ? min(20, savedMaxOptions) : 10
-
         let preferences = currentPreferences ?? TripPreferences(
             planningMode: planningMode,
             startLocation: nil,
@@ -487,7 +496,8 @@ final class TripCreationViewModel {
             lodgingType: lodgingType,
             numberOfDrivers: numberOfDrivers,
             maxDrivingHoursPerDriver: maxDrivingHoursPerDriver,
-            maxTripOptions: maxOptions
+            allowRepeatCities: allowRepeatCities,
+            selectedRegions: selectedRegions
         )
         return convertToTrip(option: option, preferences: preferences)
     }