alice sets namespace standard on scenario34-pending-7fa3f8: 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=53bbeafc-4aa7-49b1-9510-87d4b07b7759 p2=859b5f1e-c8ca-41d6-acd6-04b616a53270
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