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/team_aliases.json

@@ -606,5 +606,29 @@
     "alias_value": "Miami",
     "valid_from": "1993-01-01",
     "valid_until": "1998-12-31"
+  },
+  {
+    "id": "alias_nfl_77",
+    "team_canonical_id": "team_nfl_was",
+    "alias_type": "name",
+    "alias_value": "Washington Redskins",
+    "valid_from": "1937-01-01",
+    "valid_until": "2020-07-13"
+  },
+  {
+    "id": "alias_nfl_78",
+    "team_canonical_id": "team_nfl_was",
+    "alias_type": "name",
+    "alias_value": "Washington Football Team",
+    "valid_from": "2020-07-13",
+    "valid_until": "2022-02-02"
+  },
+  {
+    "id": "alias_nfl_79",
+    "team_canonical_id": "team_nfl_was",
+    "alias_type": "abbreviation",
+    "alias_value": "WFT",
+    "valid_from": "2020-07-13",
+    "valid_until": "2022-02-02"
   }
 ]