Notification support maxCount

Editor assessment

The subject `feat: Notification support maxCount` names the component and the new capability — capping notification count — plainly. The feat type fits new API surface, and the component naming substitutes for a scope. No body appears apart from a co-author token, acceptable for an addition whose subject states the what and where completely. No footer is required. Hygiene is clean: concise, no junk, sensible length. A small, clear, self-sufficient feature record.