shared: add independent IPv4 and IPv6 collection [CI]

backend/shared/MoShiro.Protocol/Rpc/MoShiroRpc.cs

@@ -61,6 +61,9 @@ public sealed class TestPhase
 
 public sealed class TestRunParams
 {
+    [JsonPropertyName("ip_version")]
+    public string IpVersion { get; set; } = IpVersions.V4;
+
     [JsonPropertyName("test_id")]
     public TestId TestId { get; set; }
 
@@ -127,6 +130,9 @@ public sealed class AgentEventParams
 
 public sealed class AgentEndpoint
 {
+    [JsonPropertyName("ipv6_host")]
+    public string? Ipv6Host { get; set; }
+
     [JsonPropertyName("agent_id")]
     public NodeId AgentId { get; set; }
 
@@ -289,6 +295,10 @@ public sealed class ProbeHelloMeta
 /// <summary><c>fleet.hello</c> 的附加字段。</summary>
 public sealed class AgentHelloMeta
 {
+    /// <summary>本机是否启用了 IPv6 监听。旧 Agent 缺省为 false，面板不会给它安排 IPv6 会话。</summary>
+    [JsonPropertyName("ipv6_supported")]
+    public bool Ipv6Supported { get; set; }
+
     [JsonPropertyName("platform")]
     public PlatformInfo? Platform { get; set; }
 
@@ -353,6 +363,9 @@ public sealed class HostSnapshot
 /// <summary>Agent 眼中的一个已连接 Probe。</summary>
 public sealed class ConnectedProbe
 {
+    [JsonPropertyName("ip_version")]
+    public string IpVersion { get; set; } = IpVersions.V4;
+
     [JsonPropertyName("id")]
     public ProbeId Id { get; set; }