feat(discord-bridge): registru infra_actions (stare cluster + actiuni de mentenanta)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KddsXCqEbKMhdFJDYbAsx8

proxmox/lxc171-claude-agent/discord-bridge/tests/test_infra.py

@@ -163,8 +163,13 @@ def test_forma_scurta_addr_ca_string(home):
 
 def test_toate_hosturile_implicite_au_adresa():
     mod = load_infra()
+    # oracle-prod-admin e un alias din ~/.ssh/config (portul/cheia vin de acolo),
+    # nu o adresa IP -- restul hosturilor raman IP-uri clasice.
     for name, spec in mod.DEFAULT_HOSTS.items():
-        assert spec["addr"].count(".") == 3, name
+        if name == "oracle-prod-admin":
+            assert spec["addr"], name
+        else:
+            assert spec["addr"].count(".") == 3, name
         assert spec["user"], name
     # hosturile de productie sunt marcate ca atare
     assert mod.DEFAULT_HOSTS["oracle-prod"]["prod"] is True