Show DSH alarm hub multi-subscriber status instead of OClaw single link.

Track per-connection metadata on the hub and surface it in the UME key-alert UI so operators can see which Netx Ops clients are subscribed.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_dsh_alarm_hub.py

@@ -0,0 +1,72 @@
+"""Unit tests for DSH alarm hub subscriber bookkeeping."""
+
+from __future__ import annotations
+
+import unittest
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+from netx_api import dsh_alarm_hub as hub
+
+
+class DshAlarmHubStatusTests(unittest.TestCase):
+    def setUp(self) -> None:
+        with hub._LOCK:
+            hub._CLIENTS.clear()
+            hub._STATS.update(
+                {
+                    "published": 0,
+                    "deliver_ok": 0,
+                    "deliver_fail": 0,
+                    "subscribers": 0,
+                }
+            )
+
+    def tearDown(self) -> None:
+        with hub._LOCK:
+            hub._CLIENTS.clear()
+
+    def test_hub_status_lists_connections(self) -> None:
+        ws_a = MagicMock(name="ws_a")
+        ws_b = MagicMock(name="ws_b")
+        info_a = hub.SubscriberInfo(
+            id="aaa111",
+            user="alice",
+            remote="10.0.0.1:40001",
+            client="netxops@host-a",
+            connected_at="2026-09-10T08:00:00+00:00",
+            last_seen_at="2026-09-10T08:01:00+00:00",
+        )
+        info_b = hub.SubscriberInfo(
+            id="bbb222",
+            user="bob",
+            remote="10.0.0.2:40002",
+            client="netxops@host-b",
+            connected_at="2026-09-10T08:00:30+00:00",
+            last_seen_at="2026-09-10T08:01:30+00:00",
+        )
+        with hub._LOCK:
+            hub._CLIENTS[ws_a] = info_a
+            hub._CLIENTS[ws_b] = info_b
+            hub._STATS["subscribers"] = 2
+            hub._STATS["published"] = 5
+            hub._STATS["deliver_ok"] = 8
+
+        status = hub.hub_status()
+        self.assertTrue(status["enabled"])
+        self.assertEqual(status["subscribers"], 2)
+        self.assertEqual(status["published"], 5)
+        self.assertEqual(status["deliver_ok"], 8)
+        self.assertEqual(status["path"], "/v1/integrations/dsh-alarm/ws")
+        ids = [row["id"] for row in status["connections"]]
+        self.assertEqual(ids, ["aaa111", "bbb222"])
+        self.assertEqual(status["connections"][0]["user"], "alice")
+        self.assertEqual(status["connections"][1]["client"], "netxops@host-b")
+
+    def test_client_remote_formats_host_port(self) -> None:
+        ws = SimpleNamespace(client=SimpleNamespace(host="192.168.1.9", port=54321))
+        self.assertEqual(hub._client_remote(ws), "192.168.1.9:54321")
+
+
+if __name__ == "__main__":
+    unittest.main()