Get AI Gateway session threads

NetworkCallLogs is the chronological list of individual network calls made during the session, holding the earliest calls up to a server-side cap. NetworkCalls remains authoritative for whole-session totals, so a shorter list than NetworkCalls.Total means the list was truncated. Empty when the session did not pass through Agent Firewall.

NetworkTopDomains lists the most contacted destination hosts, ordered by call count descending. NetworkDomainCount is the total number of distinct domains, used to render a "+N more" overflow beyond the listed domains.