Open follow-up questions now run as a guided in-chat sequence — a quiet
card offers to start, the coach asks one question at a time with
visible progress, answers can be adopted into the matching self-context
field, skipping keeps a question pending and a closing summary says
what was taken over. Proactive nudges learn three new deterministic
signals — weight drifting from its target band, a run of short nights,
an active user falling silent — address the focus the user asked to
watch, and gain per-group toggles and a frequency preference.