Add Announcement Card

This skill helps you add announcement cards to the Agenta sidebar banner system. Announcement cards appear at the bottom of the sidebar and can be dismissed by users.

System Overview

The sidebar banner system is located at web/oss/src/components/SidebarBanners/ and uses:

• Priority-based queue: Only one banner shows at a time
• Auto-progression: When dismissed, the next highest priority banner appears
• Persistent dismissal: Uses localStorage to remember dismissed banners
• Jotai atoms: For reactive state management

Two Types of Announcements

1. Simple Changelog Announcements (Most Common)

For standard product updates, features, and changes, simply add to changelog.json:

File: web/oss/src/components/SidebarBanners/data/changelog.json