#21515: Add JSDoc comment to clampInt function

This PR adds a JSDoc comment to the `clampInt` function for better documentation. **Changes:** - Added JSDoc comment explaining that clampInt clamps an integer value between min and max (inclusive) **Testing:** - ✅ Build completed successfully - ⚠️ Tests and typecheck skipped due to memory constraints in test environment <!-- greptile_comment --> <h3>Greptile Summary</h3> Added JSDoc comment to `clampInt` function explaining that it clamps an integer value between min and max (inclusive). - Added documentation for previously undocumented utility function - Comment could be more precise about the floor operation that happens before clamping <h3>Confidence Score: 5/5</h3> - This PR is safe to merge with minimal risk - it only adds documentation - Score reflects that this is a documentation-only change with no functional modifications. The JSDoc comment is accurate (though could be more detailed), and there's no risk of introducing bugs or breaking changes. - No files require special attention _{Last reviewed commit: da8a22b} <!-- greptile_other_comments_section --> _{(2/5) Greptile learns from your feedback when you react with thumbs up/down!} <!-- /greptile_comment -->