Reserved id for the pre-load autosave restore point, re-exported from core (single source —
the web UI's save-into picker needs the same id to exclude it, see session.ts's doc). A
single stable id (overwritten each load), so loading repeatedly leaves exactly one "before
the last load" entry to recover from rather than N.
Reserved id for the pre-load autosave restore point, re-exported from core (single source — the web UI's save-into picker needs the same id to exclude it, see
session.ts's doc). A single stable id (overwritten each load), so loading repeatedly leaves exactly one "before the last load" entry to recover from rather than N.