bug: title with timestamp on seekbar

[MeerUzairWasHere]

If I am able to see the title with timestamp on hover over seekbar locally.

why not for web3 course?

[Harsheetsharma]

Hi I'm Harsheet Sharma and I’ve looked into this issue and found that the tooltip on the seekbar was missing the title for some courses like Web3 because the segment.title was either empty or undefined.

I’ve submitted a PR to handle this by adding a fallback text like "Untitled Chapter" when the segment title is missing.

this.write(segmentName? ${time} - ${segmentName}:${time});
This ensures a consistent and clear UX for all courses.

Let me know if any changes are needed — happy to adjust!