Conversation sharing: Public Link tab and Public Shares settings page

Conversation sharing, which already let you share an agent conversation with teammates, now also lets you share it with people outside NinjaCat. In the "Share Conversation" dialog, the "Public Link" tab creates a view-only snapshot that anyone with the link can open without signing in to NinjaCat. You choose whether to "Include Files" and set the link to expire after 7, 30 or 90 days. Tool activity is never included. New messages aren't added until you "Update snapshot", and you can "Delete Link and Revoke Access" at any time. In agencies with AI agents enabled, users who can manage agency settings can see every public link in their organization and "Take down" any of them under "AI settings" → "Public Shares". Public links are available to everyone.