alice sets namespace standard on scenario34-pending-f0e4b5: write=approve, approver=ai:bob
  set-standard returned HTTP 201
settle 2s for standard settle
alice writes two memories into the governed namespace (should land in pending)
  p1=ecd04a34-a394-4652-ac16-f2e58c1d94ad p2=8a09d44a-4094-47cb-b178-6d0a2a0e09dd
settle 4s for pending queue settle
bob lists pending on node-2
  pending queue has 2 entries
bob approves p1, rejects p2
  approve HTTP 200; reject HTTP 200
settle 5s for decision fanout
charlie reads the namespace — expects ONLY approved marker
  charlie sees approved=1 rejected=0