Remove duplicate scrollbar definitions from:
- global-effects.css: replaced cyan scrollbar block with comment pointing
to index.css as the single source
- fixDisplayIssues.ts: removed JS-injected scrollbar override that
conflicted with the CSS source of truth
The canonical scrollbar definition (6px, white/12 thumb, transparent
track) now lives exclusively in index.css @layer base.
Co-authored-by: Cursor <cursoragent@cursor.com>
7786af5ca7