feat(agents): expose MAM_ID_POST_DISCOVERED in facts bridge (Issue #68)

.agents/skills/lib_py/agents/__main__.py

@@ -1,6 +1,7 @@
 # __main__.py — CLI bridge for lib_py.agents facts and resolution (N4)
 
 import os, sys, json, shlex, time
+from lib_py.agents.base import POST_DISCOVERED
 from lib_py.agents.registry import get_adapter, own_key, agent_of_row
 
 # `purge auto` probes adapters in this order; opencode last because its
@@ -71,6 +72,7 @@ def main():
         print(f"MAM_AGENT_STATUS_RELIABLE={1 if adapter.agent_status_reliable else 0}")
         print(f"MAM_EXIT_KEY={q(adapter.exit_key)}")
         print(f"MAM_DELEGATE_AGENT_KEY={q(adapter.delegate_agent_key)}")
+        print(f"MAM_ID_POST_DISCOVERED={1 if adapter.id_lifecycle == POST_DISCOVERED else 0}")
 
     elif cmd == 'resolve':
         name = sys.argv[2] if len(sys.argv) > 2 else ''