feat(lib): implement A-4 M0~M1 BaseAgentAdapter pattern and resolve_home contract

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

@@ -0,0 +1,35 @@
+# __main__.py — CLI bridge for lib_py.agents facts and resolution (N4)
+
+import sys, json
+from lib_py.agents.registry import get_adapter, own_key, agent_of_row
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: python -m lib_py.agents <facts|resolve> [args...]", file=sys.stderr)
+        sys.exit(1)
+
+    cmd = sys.argv[1]
+    if cmd == 'facts':
+        agent_name = sys.argv[2] if len(sys.argv) > 2 else ''
+        adapter = get_adapter(agent_name)
+        if not adapter:
+            print(f"ERROR: Unknown agent {agent_name!r}", file=sys.stderr)
+            sys.exit(1)
+        # Emit shell-eval friendly facts
+        print(f"AGENT_NAME={adapter.name}")
+        print(f"OWN_KEY={adapter.own_key}")
+
+    elif cmd == 'resolve':
+        name = sys.argv[2] if len(sys.argv) > 2 else ''
+        resolved = agent_of_row({}, session_name=name)
+        if resolved:
+            print(resolved)
+            sys.exit(0)
+        sys.exit(1)
+
+    else:
+        print(f"ERROR: Unknown CLI command {cmd!r}", file=sys.stderr)
+        sys.exit(1)
+
+if __name__ == '__main__':
+    main()