Agent Notification Display Component

What: New UI component to display agent completion/failure notifications in the conversation.

How to use: When a background agent completes or fails, a notification is automatically shown with the agent ID, status, and summary.

Details:

• Added O69() component at line 471624 to render <agent-notification> tags
• Displays agent ID, status (completed/failed/stopped), and summary message
• Includes guidance to use AgentOutputTool to retrieve full results
• Added function m39() at line 479132 to format and queue agent notifications
• Evidence: Message rendering added at line 17994-17995 in the message display switch statement