DS Epic: Tooltip

### **Description**

A Tooltip is a small information box that appears when a user hovers over or clicks on a UI element, and provides very brief information or context about the element, helping the user understand its purpose or function.

No files, tests, or entry points are named. First clarify the Tooltip's intended behavior, API, visual states, and acceptance criteria before locating the relevant design-system entry point; done should include an agreed implementation scope and validation expectations.

Written by the indexing model from the issue text.