alice writes parent-standard-memory on node-1
alice sets namespace standard on scenario35-parent-e15f26
  set-parent returned HTTP 201
alice writes child-standard-memory on node-1
alice sets namespace standard on scenario35-parent-e15f26/child with parent=scenario35-parent-e15f26
  set-child returned HTTP 201
settle 4s for standard fanout
bob gets standard for scenario35-parent-e15f26/child on node-2 (expects layered parent+child)
  get-standard returned HTTP 200
  parent-rule visible=True; child-rule visible=True
alice clears standard on scenario35-parent-e15f26/child
  clear returned HTTP 200
settle 3s for clear settle