fix: resolve specificStadium achievement ID mismatch

The Green Monster (Fenway) and Ivy League (Wrigley) achievements
weren't working because:
1. Symbolic IDs use lowercase sport (stadium_mlb_bos)
2. Sport enum uses uppercase raw values (MLB)
3. Visits store stadium UUIDs, not symbolic IDs

Added resolveSymbolicStadiumId() helper that:
- Uppercases the sport string before Sport(rawValue:)
- Looks up team by abbreviation and sport
- Returns the team's stadiumId as UUID string

Also fixed:
- getStadiumIdsForLeague returns UUID strings (not symbolic IDs)
- AchievementProgress.isEarned computed from progress OR stored record
- getStadiumIdsForDivision queries CanonicalTeam properly

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

.claude/settings.local.json

@@ -11,7 +11,11 @@
       "Bash(xcrun simctl install:*)",
       "Skill(frontend-design:frontend-design)",
       "Bash(xcrun simctl io:*)",
-      "Bash(python cloudkit_import.py:*)"
+      "Bash(python cloudkit_import.py:*)",
+      "Bash(python -m sportstime_parser scrape:*)",
+      "Bash(pip install:*)",
+      "Bash(python -m pytest:*)",
+      "Skill(superpowers:brainstorming)"
     ]
   }
 }