Optionalcreated_OptionalpreviewOptionalscopeScope tags by name (e.g. patient) — see api/sessionScope.ts.
Optionalthread_The thread that owns this session — the id that reopens it. Absent for sessions written
before threads existed, where session_id is itself the thread id.
Exact creation instant (UTC ISO), which
dateis too coarse to carry and a UUID session id cannot encode — keep in sync withlibs/companion/agui/corilus_thread_store.py.