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>

.claude/settings.local.json

@@ -10,7 +10,8 @@
       "Bash(ls:*)",
       "Bash(xcrun simctl install:*)",
       "Skill(frontend-design:frontend-design)",
-      "Bash(xcrun simctl io:*)"
+      "Bash(xcrun simctl io:*)",
+      "Bash(python cloudkit_import.py:*)"
     ]
   }
 }