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/Settings/ViewModels/SettingsViewModel.swift

@@ -26,10 +26,6 @@ final class SettingsViewModel {
         didSet { savePreferences() }
     }
 
-    var maxTripOptions: Int {
-        didSet { savePreferences() }
-    }
-
     // MARK: - Sync State
 
     private(set) var isSyncing = false
@@ -61,9 +57,6 @@ final class SettingsViewModel {
         let savedDrivingHours = defaults.integer(forKey: "maxDrivingHoursPerDay")
         self.maxDrivingHoursPerDay = savedDrivingHours == 0 ? 8 : savedDrivingHours
 
-        let savedMaxTripOptions = defaults.integer(forKey: "maxTripOptions")
-        self.maxTripOptions = savedMaxTripOptions == 0 ? 10 : savedMaxTripOptions
-
         // Last sync
         self.lastSyncDate = defaults.object(forKey: "lastSyncDate") as? Date
 
@@ -101,7 +94,6 @@ final class SettingsViewModel {
         selectedTheme = .teal
         selectedSports = Set(Sport.supported)
         maxDrivingHoursPerDay = 8
-        maxTripOptions = 10
     }
 
     // MARK: - Persistence
@@ -110,6 +102,5 @@ final class SettingsViewModel {
         let defaults = UserDefaults.standard
         defaults.set(selectedSports.map(\.rawValue), forKey: "selectedSports")
         defaults.set(maxDrivingHoursPerDay, forKey: "maxDrivingHoursPerDay")
-        defaults.set(maxTripOptions, forKey: "maxTripOptions")
     }
 }