One call now returns all session types

The /sessions endpoint returns agent, team, and workflow sessions in a single response by default. This gives a complete view of session activity in one call, which is the most common use case for operations dashboards, audit views, and platform monitoring.

To filter for a specific session type, pass ?type=agent, ?type=team, or ?type=workflow as a query parameter.

This is a breaking change. Integrations that previously depended on the endpoint returning only one session type should add the corresponding type filter to preserve their existing behavior. Update any custom dashboards, monitoring scripts, or downstream services that consume this endpoint before upgrading to v2.6.0.