Track timeline heat graph mountain range not showing up

System currently is capturing play segments but the timeline canvas area is not displaying it. the user expects to see a mountain range heat map for the most played regions similar to Youtube heat map mountain range that appears on hover for some videos.

<img width="2416" height="2222" alt="Image" src="https://github.com/user-attachments/assets/8ffad18f-9572-46f1-8cd8-bf03a9a58c65" />