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>

marketing-videos/.gitignore

@@ -0,0 +1,16 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+out/
+
+# Remotion cache
+.remotion/
+
+# Environment
+.env
+.env.local
+
+# OS files
+.DS_Store