Activity heatmap on record timeline

[oniani1]

Hey, would love to get some thoughts on adding an activity heatmap to the record timeline view.

The idea is a GitHub-style contribution heatmap that shows activity density over the past year for any record — so you can quickly see when a contact was most engaged, when deals had the most activity, etc.

It would sit at the top of the timeline tab and give a visual summary before you scroll through individual events.

A few questions for the product team:

• Does this fit the direction you are going with the timeline view?
• Any preferences on where exactly it should live in the UI?
• Should it cover all activity types or only specific ones?

Happy to build this if there is interest — just wanted to check alignment before writing code.

[BOHEUS]

CC: @Bonapara

[BOHEUS]

Related PR #18815