feat(scripts): complete data pipeline remediation

Scripts changes:
- Add WNBA abbreviation aliases to team_resolver.py
- Fix NHL stadium coordinates in stadium_resolver.py
- Add validate_aliases.py script for orphan detection
- Update scrapers with improved error handling
- Add DATA_AUDIT.md and REMEDIATION_PLAN.md documentation
- Update alias JSON files with new mappings

iOS bundle updates:
- Update games_canonical.json with latest scraped data
- Update teams_canonical.json and stadiums_canonical.json
- Sync alias files with Scripts versions

All 5 remediation phases complete.

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

Scripts/sportstime_parser/scrapers/mls.py

@@ -42,7 +42,8 @@ class MLSScraper(BaseScraper):
 
     def _get_sources(self) -> list[str]:
         """Return source list in priority order."""
-        return ["espn", "fbref"]
+        # FBref scraper not yet implemented - TODO for future
+        return ["espn"]
 
     def _get_source_url(self, source: str, **kwargs) -> str:
         """Build URL for a source."""