fix: skip invalid/unresolvable SSH targets before connect (0.11.2)

Do not use human display_name as SSH host; skip short names that do not resolve on SAC (ubabuba -> IPv4 only).

backend/tests/test_ssh_connect.py

@@ -78,6 +78,35 @@ def test_probe_ssh_connection_non_root_does_not_use_sudo(monkeypatch):
     assert "sudo" not in captured[0]
 
 
+def test_iter_ssh_targets_skips_human_display_name(monkeypatch):
+    monkeypatch.setattr(ssh_connect, "_ssh_name_resolves", lambda name: True)
+    host = Host(
+        hostname="ubabuba",
+        display_name="Ubabuba Kalina (10.10.36.9)",
+        os_family="linux",
+        product="ssh-monitor",
+        ipv4="10.10.36.9",
+    )
+    targets = iter_ssh_targets(host)
+    assert "Ubabuba Kalina (10.10.36.9)" not in targets
+    assert "10.10.36.9" in targets
+
+
+def test_iter_ssh_targets_skips_unresolvable_hostname(monkeypatch):
+    def resolves(name: str) -> bool:
+        return ssh_connect._is_ipv4(name)
+
+    monkeypatch.setattr(ssh_connect, "_ssh_name_resolves", resolves)
+    host = Host(
+        hostname="ubabuba",
+        os_family="linux",
+        product="ssh-monitor",
+        ipv4="10.10.36.9",
+    )
+    targets = iter_ssh_targets(host)
+    assert targets == ["10.10.36.9"]
+
+
 def test_iter_ssh_targets_rejects_windows():
     host = Host(hostname="PC", os_family="windows", product="rdp-login-monitor", ipv4="1.2.3.4")
     try: