v0.11.1

Fixed

• Cold-only project tree was unusable at boot. When every
  project's most recent session was older than today (e.g. after a few
  days away), the tree showed just a "N cold" summary row with no
  selection and j/k were silent no-ops. The cold group now expands by
  default and the boot selection lands on the cold-group sentinel so
  navigation works immediately.