Fix Server release checks for the LAN-only listener [skip ci]

tests/test_server_release.py

@@ -53,3 +53,21 @@ def test_release_rejects_unsafe_runtime(release_tool, monkeypatch, unsafe):
     monkeypatch.setattr(release_tool, "inspect", lambda: container)
     with pytest.raises(AssertionError):
         release_tool.verify_runtime("test")
+
+
+def test_release_readiness_retries_on_actual_listener(release_tool, monkeypatch):
+    import io
+    import urllib.error
+
+    calls = []
+
+    def listener(url, timeout):
+        calls.append(url)
+        if url != "http://192.0.2.10:81/ready" or len(calls) == 1:
+            raise urllib.error.URLError("Connection refused during restart")
+        return io.BytesIO(b'{"status":"ready"}')
+
+    monkeypatch.setattr(release_tool.urllib.request, "urlopen", listener)
+    monkeypatch.setattr(release_tool.time, "sleep", lambda _: None)
+    release_tool.wait_ready()
+    assert len(calls) == 2