alice sets namespace standard on scenario34-pending-4eadc4: write=approve, approver=ai:bob
  set-standard returned HTTP 405
settle 2s for standard settle
alice writes two memories into the governed namespace (should land in pending)
  p1=453e04dd-6a0e-4564-83f4-846670da7cb0 p2=e1e75031-e5df-4aa4-9c24-9feb93ec4ddf
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