profiles.list's last_session.preview reused list_sessions_rich's
shared preview, which is the session's FIRST user message — right for
session lists (recognition), wrong for a messaging-style roster where
the line under each agent should track the conversation ('Hey, tell
me about yourself!' forever, per user report). Override with the
newest active user/assistant text (same query shape and lock
discipline as SessionDB.latest_message_row_id); best-effort, falls
back to the first-message preview on any failure.
E2E: live profiles.list now shows each bot's latest exchange.
Teknium
6c40300f93