constructing 500-row bulk payload
staging bulk payload on node-1 /tmp, then POST /api/v1/memories/bulk
  bulk POST returned HTTP 422
settle 20s for bulk fanout across 3 peers + aggregator
  node-2 count=0 (expected 500)
Traceback (most recent call last):
  File "/home/runner/work/ai-memory-ai2ai-gate/ai-memory-ai2ai-gate/scripts/scenarios/40_bulk_write.py", line 92, in <module>
    main()
  File "/home/runner/work/ai-memory-ai2ai-gate/ai-memory-ai2ai-gate/scripts/scenarios/40_bulk_write.py", line 65, in main
    _, resp = h.list_memories(ip, ns, limit=BULK_SIZE + 50)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/ai-memory-ai2ai-gate/ai-memory-ai2ai-gate/scripts/a2a_harness.py", line 186, in list_memories
    return self.http_on(node_ip, "GET", f"/api/v1/memories?{q}")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/ai-memory-ai2ai-gate/ai-memory-ai2ai-gate/scripts/a2a_harness.py", line 136, in http_on
    result = self.ssh_exec(node_ip, remote_cmd, timeout=timeout)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/ai-memory-ai2ai-gate/ai-memory-ai2ai-gate/scripts/a2a_harness.py", line 78, in ssh_exec
    return subprocess.run(
           ^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 550, in run
    stdout, stderr = process.communicate(input, timeout=timeout)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 1209, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 2116, in _communicate
    self._check_timeout(endtime, orig_timeout, stdout, stderr)
  File "/usr/lib/python3.12/subprocess.py", line 1253, in _check_timeout
    raise TimeoutExpired(
subprocess.TimeoutExpired: Command '['ssh', '-o', 'StrictHostKeyChecking=no', '-o', 'ConnectTimeout=10', '-o', 'ServerAliveInterval=5', 'root@167.99.59.68', "curl -sS -X GET 'http://127.0.0.1:9077/api/v1/memories?namespace=scenario40-bulk-f0df71&limit=550' -H 'Content-Type: application/json'"]' timed out after 30 seconds