feat(diagnose): Update Consul client to fetch health check output and display diagnostics

scripts/cluster_status/tests/test_consul_client.py

@@ -62,3 +62,47 @@ def test_get_cluster_services(mock_get):
     node3 = next(s for s in services if s["node"] == "node3")
     assert node3["role"] == "replica"
     assert node3["status"] == "critical"
+
+@patch("requests.get")
+def test_get_cluster_services_with_errors(mock_get):
+    """Test fetching services with detailed health check output."""
+    mock_navidrome = [
+        {
+            "Node": {"Node": "node1", "Address": "192.168.1.101"},
+            "Service": {"Service": "navidrome", "Port": 4533, "ID": "navidrome-1"},
+            "Checks": [
+                {"Status": "passing", "Output": "HTTP GET http://192.168.1.101:4533/app: 200 OK"}
+            ]
+        }
+    ]
+    mock_replicas = [
+        {
+            "Node": {"Node": "node3", "Address": "192.168.1.103"},
+            "Service": {"Service": "replica-navidrome", "Port": 4533, "ID": "replica-2"},
+            "Checks": [
+                {"Status": "critical", "Output": "HTTP GET http://192.168.1.103:4533/app: 500 Internal Server Error"}
+            ]
+        }
+    ]
+    
+    def side_effect(url, params=None, timeout=None):
+        if "health/service/navidrome" in url:
+            m = MagicMock()
+            m.json.return_value = mock_navidrome
+            m.raise_for_status.return_value = None
+            return m
+        elif "health/service/replica-navidrome" in url:
+            m = MagicMock()
+            m.json.return_value = mock_replicas
+            m.raise_for_status.return_value = None
+            return m
+        return MagicMock()
+
+    mock_get.side_effect = side_effect
+    
+    services = consul_client.get_cluster_services("http://consul:8500")
+    
+    node3 = next(s for s in services if s["node"] == "node3")
+    assert node3["status"] == "critical"
+    assert "500 Internal Server Error" in node3["check_output"]
+

scripts/cluster_status/tests/test_formatter.py

@@ -29,3 +29,32 @@ def test_format_node_table():
     assert "node1" in table
     assert "primary" in table
     assert "passing" in table
+
+def test_format_diagnostics():
+    """Test the diagnostics section generation."""
+    nodes = [
+        {
+            "node": "node3",
+            "status": "critical",
+            "check_output": "500 Internal Error",
+            "litefs_error": "Connection Timeout"
+        }
+    ]
+    diagnostics = output_formatter.format_diagnostics(nodes, use_color=False)
+    assert "DIAGNOSTICS" in diagnostics
+    assert "node3" in diagnostics
+    assert "500 Internal Error" in diagnostics
+    assert "Connection Timeout" in diagnostics
+
+def test_format_diagnostics_empty():
+    """Test that diagnostics section is empty when no errors exist."""
+    nodes = [
+        {
+            "node": "node1",
+            "status": "passing",
+            "litefs_error": None
+        }
+    ]
+    diagnostics = output_formatter.format_diagnostics(nodes, use_color=False)
+    assert diagnostics == ""
+