feat: emit native types instead of Newtonsoft JObject/JArray in public APIs

Replace all Newtonsoft.Json.Linq types (JObject, JArray, JToken) exposed
in public service methods, model properties, and cmdlet OutputTypes with
native .NET types (Dictionary<string, object?>, List<Dictionary<string,
object?>>, PSObject).

New utilities:
- JsonHelper: ToNative, ToDictionary, ToListOfDictionaries for recursive
  JToken→native conversion
- NativeListConverter / NativeDictionaryConverter: JsonConverters for
  model properties that deserialize JArray/JObject to native types

Services updated (8 methods):
- NodeService: GetNodeConfig, GetNodeDns → Dictionary<string, object?>
- BackupService: GetNotBackedUp → List<Dictionary<string, object?>>
- ClusterConfigService: GetClusterConfig, GetTotem, GetQdevice → Dictionary
- HaService: GetManagerStatus → Dictionary<string, object?>
- VmService: GetGuestExecStatus → Dictionary<string, object?>

Models updated (2 properties):
- PvePool.Members: JArray → List<Dictionary<string, object?>>
- PveHaRule.Properties: JObject → Dictionary<string, object?>

Cmdlets updated (5):
- GetPveClusterConfigCmdlet: OutputType JToken → Dictionary<string, object>
- GetPveNodeConfigCmdlet: iteration updated for Dictionary
- GetPveNodeDnsCmdlet: iteration updated for Dictionary
- GetPveBackupInfoCmdlet: iteration updated for List<Dictionary>
- InvokePveVmGuestExecCmdlet: polling updated for Dictionary

Added D013 to DECISIONS.md: cmdlets must emit only native or module-defined types.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

DECISIONS.md

@@ -358,3 +358,52 @@ extracted to `const string` fields for maintainability.
 Auth header names (`PVEAPIToken=`, `CSRFPreventionToken`) were inline string literals
 used in multiple places. Extracting to `const string ApiTokenPrefix` and
 `CsrfHeaderName` fields improves maintainability and reduces typo risk.
+
+---
+
+## D013 — Cmdlets must emit only native or module-defined types
+
+**Status**: Active
+**Finding refs**: F085
+**Resolved in scan**: 2026-03-25
+
+### Decision
+All cmdlet output types and public model properties must be native .NET types (`string`,
+`int`, `bool`, `Dictionary<string, object?>`, `List<T>`, `PSObject`, `void`) or types
+defined within the module itself (`Pve*` classes). Never expose third-party types like
+Newtonsoft's `JObject`, `JArray`, or `JToken` in public APIs.
+
+### Rationale
+PowerShell enumerates `JArray` unexpectedly and `JObject` properties are not discoverable
+via `Get-Member` or tab completion. Users piping module output into `Format-Table`,
+`Select-Object`, or `Where-Object` get confusing behavior when the underlying type is a
+Newtonsoft container. Native dictionaries and lists work naturally in PowerShell pipelines.
+
+### Anti-pattern (do not reintroduce)
+```csharp
+// Service returning Newtonsoft type
+public JObject GetNodeConfig(...) { ... }
+
+// Model exposing Newtonsoft type
+[JsonProperty("members")]
+public JArray? Members { get; set; }
+
+// Cmdlet OutputType referencing Newtonsoft type
+[OutputType(typeof(JObject))]
+```
+
+### Correct pattern
+```csharp
+// Service returns native dictionary
+public Dictionary<string, object?> GetNodeConfig(...) { ... }
+
+// Model uses native type with converter for deserialization
+[JsonProperty("members")]
+[JsonConverter(typeof(NativeListConverter))]
+public List<Dictionary<string, object?>>? Members { get; set; }
+
+// Cmdlet OutputType uses native or module type
+[OutputType(typeof(Dictionary<string, object>))]
+// or
+[OutputType(typeof(PSObject))]
+```

src/PSProxmoxVE.Core/Models/Cluster/PvePool.cs

@@ -1,5 +1,6 @@
+using System.Collections.Generic;
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Models.Cluster;
 
@@ -21,11 +22,12 @@ public class PvePool
     public string? Comment { get; set; }
 
     /// <summary>
-    /// The pool members (VMs, containers, storage). Returned as a raw array
+    /// The pool members (VMs, containers, storage). Returned as a list of dictionaries
     /// when querying a specific pool.
     /// </summary>
     [JsonProperty("members")]
-    public JArray? Members { get; set; }
+    [JsonConverter(typeof(NativeListConverter))]
+    public List<Dictionary<string, object?>>? Members { get; set; }
 
     /// <inheritdoc />
     public override string ToString()

src/PSProxmoxVE.Core/Models/HA/PveHaRule.cs

@@ -1,5 +1,6 @@
+using System.Collections.Generic;
 using Newtonsoft.Json;
-using Newtonsoft.Json.Linq;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Models.HA;
 
@@ -43,7 +44,8 @@ public class PveHaRule
     /// Rule-specific properties that vary by rule type.
     /// </summary>
     [JsonProperty("properties")]
-    public JObject? Properties { get; set; }
+    [JsonConverter(typeof(NativeDictionaryConverter))]
+    public Dictionary<string, object?>? Properties { get; set; }
 
     /// <inheritdoc />
     public override string ToString()

src/PSProxmoxVE.Core/Services/BackupService.cs

@@ -5,6 +5,7 @@ using PSProxmoxVE.Core.Authentication;
 using PSProxmoxVE.Core.Client;
 using PSProxmoxVE.Core.Models.Backup;
 using PSProxmoxVE.Core.Models.Vms;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Services
 {
@@ -173,7 +174,7 @@ namespace PSProxmoxVE.Core.Services
         /// <summary>
         /// Returns the list of guests not covered by any backup job.
         /// </summary>
-        public JArray GetNotBackedUp(PveSession session)
+        public List<Dictionary<string, object?>> GetNotBackedUp(PveSession session)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
 
@@ -183,7 +184,7 @@ namespace PSProxmoxVE.Core.Services
                 var response = client.GetAsync("cluster/backup-info/not-backed-up")
                     .GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JArray ?? new JArray();
+                return JsonHelper.ToListOfDictionaries(data as JArray);
             }
             finally
             {

src/PSProxmoxVE.Core/Services/ClusterConfigService.cs

@@ -4,6 +4,7 @@ using Newtonsoft.Json.Linq;
 using PSProxmoxVE.Core.Authentication;
 using PSProxmoxVE.Core.Client;
 using PSProxmoxVE.Core.Models.Cluster;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Services
 {
@@ -31,9 +32,9 @@ namespace PSProxmoxVE.Core.Services
 
         /// <summary>
         /// Returns the cluster configuration directory (GET /cluster/config).
-        /// The response is a mixed structure returned as a raw JObject.
+        /// The response is a mixed structure returned as a Dictionary.
         /// </summary>
-        public JObject GetClusterConfig(PveSession session)
+        public Dictionary<string, object?> GetClusterConfig(PveSession session)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
 
@@ -42,7 +43,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync("cluster/config").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return data is JObject obj ? JsonHelper.ToDictionary(obj) : new Dictionary<string, object?>();
             }
             finally
             {
@@ -258,7 +259,7 @@ namespace PSProxmoxVE.Core.Services
         /// <summary>
         /// Returns the Corosync totem configuration (GET /cluster/config/totem).
         /// </summary>
-        public JObject GetTotem(PveSession session)
+        public Dictionary<string, object?> GetTotem(PveSession session)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
 
@@ -267,7 +268,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync("cluster/config/totem").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {
@@ -278,7 +279,7 @@ namespace PSProxmoxVE.Core.Services
         /// <summary>
         /// Returns the external quorum device (qdevice) status (GET /cluster/config/qdevice).
         /// </summary>
-        public JObject GetQdevice(PveSession session)
+        public Dictionary<string, object?> GetQdevice(PveSession session)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
 
@@ -287,7 +288,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync("cluster/config/qdevice").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {

src/PSProxmoxVE.Core/Services/HaService.cs

@@ -4,6 +4,7 @@ using Newtonsoft.Json.Linq;
 using PSProxmoxVE.Core.Authentication;
 using PSProxmoxVE.Core.Client;
 using PSProxmoxVE.Core.Models.HA;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Services
 {
@@ -357,7 +358,7 @@ namespace PSProxmoxVE.Core.Services
         /// <summary>
         /// Returns the full HA manager status as a raw JSON object.
         /// </summary>
-        public JObject GetManagerStatus(PveSession session)
+        public Dictionary<string, object?> GetManagerStatus(PveSession session)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
 
@@ -366,7 +367,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync("cluster/ha/status/manager_status").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {

src/PSProxmoxVE.Core/Services/NodeService.cs

@@ -6,6 +6,7 @@ using PSProxmoxVE.Core.Authentication;
 using PSProxmoxVE.Core.Client;
 using PSProxmoxVE.Core.Models.Nodes;
 using PSProxmoxVE.Core.Models.Vms;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Services
 {
@@ -78,7 +79,7 @@ namespace PSProxmoxVE.Core.Services
         /// </summary>
         /// <param name="session">The authenticated PVE session.</param>
         /// <param name="node">The cluster node name.</param>
-        public JObject GetNodeConfig(PveSession session, string node)
+        public Dictionary<string, object?> GetNodeConfig(PveSession session, string node)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
             if (string.IsNullOrWhiteSpace(node)) throw new ArgumentNullException(nameof(node));
@@ -88,7 +89,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync($"nodes/{Uri.EscapeDataString(node)}/config").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {
@@ -124,7 +125,7 @@ namespace PSProxmoxVE.Core.Services
         /// </summary>
         /// <param name="session">The authenticated PVE session.</param>
         /// <param name="node">The cluster node name.</param>
-        public JObject GetNodeDns(PveSession session, string node)
+        public Dictionary<string, object?> GetNodeDns(PveSession session, string node)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
             if (string.IsNullOrWhiteSpace(node)) throw new ArgumentNullException(nameof(node));
@@ -134,7 +135,7 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync($"nodes/{Uri.EscapeDataString(node)}/dns").GetAwaiter().GetResult();
                 var data = JObject.Parse(response)["data"];
-                return data as JObject ?? new JObject();
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {

src/PSProxmoxVE.Core/Services/VmService.cs

@@ -6,6 +6,7 @@ using PSProxmoxVE.Core.Authentication;
 using PSProxmoxVE.Core.Client;
 using PSProxmoxVE.Core.Models.Nodes;
 using PSProxmoxVE.Core.Models.Vms;
+using PSProxmoxVE.Core.Utilities;
 
 namespace PSProxmoxVE.Core.Services
 {
@@ -624,7 +625,7 @@ namespace PSProxmoxVE.Core.Services
         /// <summary>
         /// Gets the status/result of a guest agent exec command by PID.
         /// </summary>
-        public JObject GetGuestExecStatus(PveSession session, string node, int vmid, int pid)
+        public Dictionary<string, object?> GetGuestExecStatus(PveSession session, string node, int vmid, int pid)
         {
             if (session == null) throw new ArgumentNullException(nameof(session));
             if (string.IsNullOrWhiteSpace(node)) throw new ArgumentNullException(nameof(node));
@@ -634,7 +635,8 @@ namespace PSProxmoxVE.Core.Services
             {
                 var response = client.GetAsync($"nodes/{Uri.EscapeDataString(node)}/qemu/{vmid}/agent/exec-status?pid={pid}")
                     .GetAwaiter().GetResult();
-                return JObject.Parse(response)["data"] as JObject ?? new JObject();
+                var data = JObject.Parse(response)["data"];
+                return JsonHelper.ToDictionary(data as JObject);
             }
             finally
             {

src/PSProxmoxVE.Core/Utilities/JsonHelper.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json.Linq;
+
+namespace PSProxmoxVE.Core.Utilities
+{
+    /// <summary>
+    /// Provides helper methods for converting Newtonsoft.Json types to native .NET types.
+    /// </summary>
+    public static class JsonHelper
+    {
+        /// <summary>
+        /// Converts a JToken to a native .NET type recursively.
+        /// JObject becomes Dictionary&lt;string, object&gt;, JArray becomes List&lt;object&gt;, JValue becomes primitive.
+        /// </summary>
+        public static object? ToNative(JToken? token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            switch (token)
+            {
+                case JObject obj:
+                    return obj.Properties().ToDictionary(
+                        p => p.Name,
+                        p => ToNative(p.Value));
+
+                case JArray arr:
+                    return arr.Select(ToNative).ToList();
+
+                case JValue val:
+                    return val.Value;
+
+                default:
+                    return token.ToString();
+            }
+        }
+
+        /// <summary>
+        /// Converts a JObject to a Dictionary&lt;string, object?&gt;.
+        /// </summary>
+        public static Dictionary<string, object?> ToDictionary(JObject? obj)
+        {
+            if (obj == null) return new Dictionary<string, object?>();
+            return obj.Properties().ToDictionary(
+                p => p.Name,
+                p => ToNative(p.Value));
+        }
+
+        /// <summary>
+        /// Converts a JArray to a List of Dictionaries.
+        /// Each element should be a JObject; non-object elements are skipped.
+        /// </summary>
+        public static List<Dictionary<string, object?>> ToListOfDictionaries(JArray? arr)
+        {
+            if (arr == null) return new List<Dictionary<string, object?>>();
+            return arr.OfType<JObject>().Select(ToDictionary).ToList();
+        }
+    }
+}

src/PSProxmoxVE.Core/Utilities/NativeJsonConverters.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace PSProxmoxVE.Core.Utilities
+{
+    /// <summary>
+    /// JSON converter that deserializes a JSON array into a List of Dictionary&lt;string, object?&gt;.
+    /// Each array element is expected to be an object; non-object elements are skipped.
+    /// </summary>
+    public class NativeListConverter : JsonConverter<List<Dictionary<string, object?>>>
+    {
+        /// <inheritdoc />
+        public override List<Dictionary<string, object?>> ReadJson(JsonReader reader, Type objectType, List<Dictionary<string, object?>>? existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            var token = JToken.Load(reader);
+            return token is JArray arr ? JsonHelper.ToListOfDictionaries(arr) : new List<Dictionary<string, object?>>();
+        }
+
+        /// <inheritdoc />
+        public override void WriteJson(JsonWriter writer, List<Dictionary<string, object?>>? value, JsonSerializer serializer)
+        {
+            serializer.Serialize(writer, value);
+        }
+    }
+
+    /// <summary>
+    /// JSON converter that deserializes a JSON object into a Dictionary&lt;string, object?&gt;.
+    /// </summary>
+    public class NativeDictionaryConverter : JsonConverter<Dictionary<string, object?>>
+    {
+        /// <inheritdoc />
+        public override Dictionary<string, object?> ReadJson(JsonReader reader, Type objectType, Dictionary<string, object?>? existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            var token = JToken.Load(reader);
+            return token is JObject obj ? JsonHelper.ToDictionary(obj) : new Dictionary<string, object?>();
+        }
+
+        /// <inheritdoc />
+        public override void WriteJson(JsonWriter writer, Dictionary<string, object?>? value, JsonSerializer serializer)
+        {
+            serializer.Serialize(writer, value);
+        }
+    }
+}

src/PSProxmoxVE/Cmdlets/Backup/GetPveBackupInfoCmdlet.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Management.Automation;
 using PSProxmoxVE.Core.Services;
 
@@ -26,12 +27,9 @@ namespace PSProxmoxVE.Cmdlets.Backup
             foreach (var item in items)
             {
                 var pso = new PSObject();
-                if (item is Newtonsoft.Json.Linq.JObject jObj)
+                foreach (var kvp in item)
                 {
-                    foreach (var prop in jObj.Properties())
+                    pso.Properties.Add(new PSNoteProperty(kvp.Key, kvp.Value));
-                    {
-                        pso.Properties.Add(new PSNoteProperty(prop.Name, prop.Value?.ToObject<object>()));
-                    }
                 }
                 WriteObject(pso);
             }

src/PSProxmoxVE/Cmdlets/Cluster/GetPveClusterConfigCmdlet.cs

@@ -1,5 +1,5 @@
+using System.Collections.Generic;
 using System.Management.Automation;
-using Newtonsoft.Json.Linq;
 using PSProxmoxVE.Core.Services;
 
 namespace PSProxmoxVE.Cmdlets.Cluster
@@ -12,7 +12,7 @@ namespace PSProxmoxVE.Cmdlets.Cluster
     /// </para>
     /// </summary>
     [Cmdlet(VerbsCommon.Get, "PveClusterConfig")]
-    [OutputType(typeof(JObject))]
+    [OutputType(typeof(Dictionary<string, object>))]
     public sealed class GetPveClusterConfigCmdlet : PveCmdletBase
     {
         protected override void ProcessRecord()

src/PSProxmoxVE/Cmdlets/Nodes/GetPveNodeConfigCmdlet.cs

@@ -28,9 +28,9 @@ namespace PSProxmoxVE.Cmdlets.Nodes
             var config = service.GetNodeConfig(session, Node);
 
             var psObj = new PSObject();
-            foreach (var prop in config.Properties())
+            foreach (var kvp in config)
             {
-                psObj.Properties.Add(new PSNoteProperty(prop.Name, prop.Value.ToString()));
+                psObj.Properties.Add(new PSNoteProperty(kvp.Key, kvp.Value));
             }
 
             WriteObject(psObj);

src/PSProxmoxVE/Cmdlets/Nodes/GetPveNodeDnsCmdlet.cs

@@ -28,9 +28,9 @@ namespace PSProxmoxVE.Cmdlets.Nodes
             var dns = service.GetNodeDns(session, Node);
 
             var psObj = new PSObject();
-            foreach (var prop in dns.Properties())
+            foreach (var kvp in dns)
             {
-                psObj.Properties.Add(new PSNoteProperty(prop.Name, prop.Value.ToString()));
+                psObj.Properties.Add(new PSNoteProperty(kvp.Key, kvp.Value));
             }
 
             WriteObject(psObj);

src/PSProxmoxVE/Cmdlets/Vms/InvokePveVmGuestExecCmdlet.cs

@@ -53,19 +53,19 @@ namespace PSProxmoxVE.Cmdlets.Vms
             // Poll for completion with timeout
             var sw = Stopwatch.StartNew();
             var deadline = TimeSpan.FromSeconds(Timeout);
-            Newtonsoft.Json.Linq.JObject result;
+            System.Collections.Generic.Dictionary<string, object?> result;
             do
             {
                 System.Threading.Thread.Sleep(1000);
                 if (sw.Elapsed >= deadline)
                     throw new TimeoutException($"Guest command did not complete within {Timeout} seconds.");
                 result = service.GetGuestExecStatus(session, Node, VmId, pid);
-            } while (result["exited"]?.ToObject<int>() != 1);
+            } while (!result.TryGetValue("exited", out var exited) || !Equals(exited, 1L));
 
             var output = new PSObject();
-            output.Properties.Add(new PSNoteProperty("ExitCode", result["exitcode"]?.ToObject<int>() ?? -1));
+            output.Properties.Add(new PSNoteProperty("ExitCode", result.TryGetValue("exitcode", out var ec) && ec is long ecl ? (int)ecl : -1));
-            output.Properties.Add(new PSNoteProperty("Stdout", DecodeBase64(result["out-data"]?.ToString())));
+            output.Properties.Add(new PSNoteProperty("Stdout", DecodeBase64(result.TryGetValue("out-data", out var od) ? od?.ToString() : null)));
-            output.Properties.Add(new PSNoteProperty("Stderr", DecodeBase64(result["err-data"]?.ToString())));
+            output.Properties.Add(new PSNoteProperty("Stderr", DecodeBase64(result.TryGetValue("err-data", out var ed) ? ed?.ToString() : null)));
             output.Properties.Add(new PSNoteProperty("Pid", pid));
 
             WriteObject(output);

tests/PSProxmoxVE.Core.Tests/Services/BackupServiceTests.cs

@@ -360,7 +360,7 @@ namespace PSProxmoxVE.Core.Tests.Services
         // ---------------------------------------------------------------
 
         [Fact]
-        public void GetNotBackedUp_ReturnsJArray()
+        public void GetNotBackedUp_ReturnsListOfDictionaries()
         {
             // Arrange
             var json = @"{
@@ -379,14 +379,14 @@ namespace PSProxmoxVE.Core.Tests.Services
             var result = service.GetNotBackedUp(CreateSession());
 
             // Assert
-            Assert.IsType<JArray>(result);
+            Assert.IsType<List<Dictionary<string, object?>>>(result);
             Assert.Equal(2, result.Count);
-            Assert.Equal(100, result[0]["vmid"]!.Value<int>());
+            Assert.Equal(100L, result[0]["vmid"]);
-            Assert.Equal("webserver", result[0]["name"]!.Value<string>());
+            Assert.Equal("webserver", result[0]["name"]);
         }
 
         [Fact]
-        public void GetNotBackedUp_EmptyData_ReturnsEmptyJArray()
+        public void GetNotBackedUp_EmptyData_ReturnsEmptyList()
         {
             // Arrange
             var json = @"{""data"": []}";

tests/PSProxmoxVE.Core.Tests/Services/NodeServiceTests.cs

@@ -71,7 +71,7 @@ namespace PSProxmoxVE.Core.Tests.Services
         }
 
         [Fact]
-        public void GetNodeConfig_ReturnsJObject()
+        public void GetNodeConfig_ReturnsDictionary()
         {
             // Arrange
             var json = @"{""data"": {""description"": ""Primary node"", ""wakeonlan"": ""AA:BB:CC:DD:EE:FF""}}";
@@ -84,6 +84,7 @@ namespace PSProxmoxVE.Core.Tests.Services
 
             // Assert
             Assert.NotNull(config);
+            Assert.IsType<Dictionary<string, object?>>(config);
             Assert.Equal("Primary node", config["description"]?.ToString());
             Assert.Equal("AA:BB:CC:DD:EE:FF", config["wakeonlan"]?.ToString());
             mockClient.Verify(c => c.GetAsync("nodes/pve1/config"), Times.Once);
@@ -116,7 +117,7 @@ namespace PSProxmoxVE.Core.Tests.Services
         }
 
         [Fact]
-        public void GetNodeDns_ReturnsJObject()
+        public void GetNodeDns_ReturnsDictionary()
         {
             // Arrange
             var json = @"{""data"": {""dns1"": ""8.8.8.8"", ""dns2"": ""8.8.4.4"", ""search"": ""example.com""}}";
@@ -129,6 +130,7 @@ namespace PSProxmoxVE.Core.Tests.Services
 
             // Assert
             Assert.NotNull(dns);
+            Assert.IsType<Dictionary<string, object?>>(dns);
             Assert.Equal("8.8.8.8", dns["dns1"]?.ToString());
             Assert.Equal("8.8.4.4", dns["dns2"]?.ToString());
             Assert.Equal("example.com", dns["search"]?.ToString());