Anthbot Map v2.4.9.5-beta6

• Fixes announcement popups being swallowed by a hidden or clipped Anthbot Map card instance by rendering one branded overlay at document level.
• Prevents merely rendering a previously open News panel from silently marking a new message as read and hiding its bell.
• Marks messages as read only after the user explicitly opens News or closes the popup; the red/orange flashing bell therefore remains visible until a real read action.