Super/fallback can toggle view-all (default on); admin/user stay own-only while still seeing unowned system sessions. Add restore/prune helpers so empty-shell cleanup is explicit and recoverable.
UI session behavior stays unchanged; login writes a separate skill cache, with optional retain-on-logout and loopback agent-credentials/outbound APIs plus helpers/docs.
Co-authored-by: Cursor <cursoragent@cursor.com>