feat(runtime): track node lifecycle and QUIC link state

backend/src/MoShiro.Backend.Api/Contracts/AdminDtos.cs

@@ -1,5 +1,6 @@
 using Fleet.Core;
 using System.Text.Json;
+using MoShiro.Protocol;
 
 namespace MoShiro.Backend.Api;
 
@@ -53,6 +54,7 @@ public sealed record AgentDto(
     IReadOnlyList<RejectedDto> Rejected,
     HeartbeatDto? Heartbeat,
     int EndpointChanges,
+    NodeRuntimeStatus RuntimeStatus,
     DateTimeOffset CreatedAt,
     DateTimeOffset? LastSeenAt,
     string Ipv6Host = "",
@@ -123,10 +125,10 @@ public sealed record ConnectedProbeDto(string ProbeId, string? Version, string?
 /// <summary>某个 Probe 现在连着的一个 Agent。</summary>
 public sealed record ProbeConnectionDto(string AgentId, string AgentName, bool AgentOnline, string? Version, string? Remote, DateTimeOffset ConnectedSince, string IpVersion = "ipv4");
 
-public sealed record ProbeDto(string Id, string Name, DateTimeOffset CreatedAt, DateTimeOffset? RevokedAt, bool Revoked, bool Online, IReadOnlyList<ProbeConnectionDto> Connections, Ipv6DiagnosticDto? Ipv6 = null, string? AddedBy = null);
+public sealed record ProbeDto(string Id, string Name, DateTimeOffset CreatedAt, DateTimeOffset? RevokedAt, bool Revoked, bool Online, IReadOnlyList<ProbeConnectionDto> Connections, NodeRuntimeStatus RuntimeStatus, Ipv6DiagnosticDto? Ipv6 = null, string? AddedBy = null);
 
 /// <summary>一对（Probe，Agent）的线路开关：<c>linked</c> 是最终结果，<c>override</c> 是手动设置（<c>null</c> = 跟随自动连接），<c>connected</c> 是现在有没有连着。</summary>
-public sealed record LinkDto(string ProbeId, string ProbeName, string AgentId, string AgentName, bool Linked, bool? Override, bool Connected);
+public sealed record LinkDto(string ProbeId, string ProbeName, string AgentId, string AgentName, bool Linked, bool? Override, bool Connected, NodeRuntimeStatus ProbeRuntimeStatus, NodeRuntimeStatus AgentRuntimeStatus, string ConnectionState = "connecting", string? ConnectionReason = null, string? LastError = null, int RetryAttempt = 0, long? RetryInMs = null);
 
 public sealed record LinkMatrixDto(bool AutoLink, IReadOnlyList<LinkDto> Items);
 

backend/src/MoShiro.Backend.Api/Contracts/ApiJsonContext.cs

@@ -41,6 +41,7 @@ namespace MoShiro.Backend.Api;
 [JsonSerializable(typeof(AgentPatchRequest))]
 [JsonSerializable(typeof(LinkDto))]
 [JsonSerializable(typeof(LinkMatrixDto))]
+[JsonSerializable(typeof(LinkRetryDto))]
 [JsonSerializable(typeof(SetLinkRequest))]
 [JsonSerializable(typeof(BuildDto))]
 [JsonSerializable(typeof(ReleaseDto))]

backend/src/MoShiro.Backend.Api/Contracts/PublicDtos.cs

@@ -48,7 +48,10 @@ public sealed record QuicLineHealthDto(
     uint? TransportCongestionEvents,
     uint? TransportEcnCongestionEvents,
     ushort? PathMtu,
-    DateTimeOffset At);
+    DateTimeOffset At,
+    string State = "connecting",
+    int RetryAttempt = 0,
+    long? RetryInMs = null);
 
 public sealed record OverviewDto(string Range, DateTimeOffset From, DateTimeOffset To, string Step, string Source, bool Degraded, IReadOnlyList<OverviewLineDto> Lines);