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/Planning/Engine/ScenarioCPlanner.swift

@@ -261,8 +261,7 @@ final class ScenarioCPlanner: ScenarioPlanner {
         let leisureLevel = request.preferences.leisureLevel
         let rankedOptions = ItineraryOption.sortByLeisure(
             allItineraryOptions,
-            leisureLevel: leisureLevel,
-            limit: request.preferences.maxTripOptions
+            leisureLevel: leisureLevel
         )
 
         return .success(Array(rankedOptions))