alice sets namespace standard on scenario34-pending-687780: write=approve, approver=ai:bob
  set-standard returned HTTP 400
settle 2s for standard settle
alice writes two memories into the governed namespace (should land in pending)
  p1=9e25584c-6dc0-46dc-890a-1f0beeff1b60 p2=f09423a9-a210-44a3-b172-482368d42ff7
settle 4s for pending queue settle
bob lists pending on node-2
  pending queue has 0 entries
bob approves p1, rejects p2
  approve HTTP 403; reject HTTP 404
settle 5s for decision fanout
charlie reads the namespace — expects ONLY approved marker
  charlie sees approved=1 rejected=1