You'll notice
Notifications about a newer live artifact version are now tracked per agent, not just once overall
What
Previously, Claude Code tracked whether a user or agent had been told about a newer live version of an artifact with a single yes/no flag per artifact. Now it tracks a set of agent IDs that have already been told, so when multiple teammates or agents are working concurrently, each one gets notified independently about the same version update instead of only the first one. A new telemetry signal also fires when a reported version appears to be ahead of the local clock.
Why
This fixes a case where, in a session with multiple concurrent agents, only the first agent to see a live artifact update would be told about it, leaving the others unaware.