BUGFIX: Uncaught SyntaxError expected expression, got ')'
PROBLEM: Console error on page load due to malformed JavaScript
ROOT CAUSE: Previous replacement left duplicate code fragment:
- Closing brace of updateDropdownHighlight function was followed by
'kup.addEventListener' (missing 'loo' prefix)
- This created invalid JavaScript syntax
- Old keydown handler wasn't fully removed
SOLUTION: Removed the duplicate/malformed keydown listener block
The proper keydown handler with arrow key navigation is earlier
in the code and works correctly.