chore: remove scraper, add docs, add marketing-videos gitignore

- Remove Scripts/ directory (scraper no longer needed)
- Add themed background documentation to CLAUDE.md
- Add .gitignore for marketing-videos to prevent node_modules tracking

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

SportsTime/Features/Settings/SportsIconImageGenerator.swift

@@ -28,7 +28,6 @@ struct SportsIconImageGenerator {
         "figure.soccer",
         // Venues/events
         "sportscourt.fill",
-        "stadium.fill",
         "trophy.fill",
         "ticket.fill",
         // Travel/navigation