feat: daily node restart controlled from the admin, connect timings as a default line task [CI]

Agents and Probes exit in order at a configured time (default 04:30 UTC+8, switch and time zone in the admin settings) and the service manager starts them again; a local restart_at or MOSHIRO_RESTART_AT wins. The connect kind (TCP connect and TLS handshake timings) is now a default continuous line template, with a section on the line page.

backend/probe/src/MoShiro.Probe/ProbeApp.cs

@@ -23,7 +23,7 @@ public sealed class ProbeApp : IDisposable
     private readonly INodeLog _log;
     private readonly FleetLink _link;
 
-    public ProbeApp(ProbeFile file, string configDirectory, TimeProvider time, INodeLog log)
+    public ProbeApp(ProbeFile file, string configDirectory, TimeProvider time, INodeLog log, RestartController? restart = null)
     {
         _log = log;
         var directory = new AgentDirectory(new ConfigStore(configDirectory), configDirectory, log);
@@ -59,6 +59,15 @@ public sealed class ProbeApp : IDisposable
             .OnNotify(MoShiroMethods.UpdateApply, MoShiroJsonContext.Default.UpdateOfferParams, (_, _, _) =>
             {
                 update.RequestApply();
+                return ValueTask.CompletedTask;
+            })
+            .OnNotify(MoShiroMethods.Schedule, MoShiroJsonContext.Default.ScheduleParams, (_, schedule, _) =>
+            {
+                if (restart is not null && !restart.SetRemote(schedule.RestartAt))
+                {
+                    log.Warn("ignoring an invalid restart schedule from the panel");
+                }
+
                 return ValueTask.CompletedTask;
             });
         _link = new FleetLink(options, router, [list], new Outbox(1 << 20), time, log);

backend/probe/src/MoShiro.Probe/ProbeConfig.cs

@@ -20,6 +20,10 @@ public sealed class ProbeFile
     [JsonPropertyName("server")]
     public string Server { get; set; } = "";
 
+    /// <summary>每天定时重启一次，例如 <c>04:00+08:00</c>（不写偏移按 UTC）；不写就不重启。环境变量 <c>MOSHIRO_RESTART_AT</c> 优先；这里是本地配置，从面板重新下载 probe.json 会丢掉它，所以容器里推荐用环境变量。</summary>
+    [JsonPropertyName("restart_at")]
+    public string? RestartAt { get; set; }
+
     [JsonPropertyName("limits")]
     public ProbeLimits Limits { get; set; } = new();
 }

backend/probe/src/MoShiro.Probe/Program.cs

@@ -21,9 +21,11 @@ for (int i = 0; i < args.Length - 1; i++)
 }
 
 ProbeFile file;
+RestartController restart;
 try
 {
     file = NodeConfig.Load(configPath, ProbeConfigContext.Default.ProbeFile);
+    restart = new RestartController(RestartSchedule.Resolve(file.RestartAt));
     if (file.ProbeId.Length == 0 || file.PrivateKey.Length == 0 || !Uri.TryCreate(file.Server, UriKind.Absolute, out _))
     {
         throw new InvalidOperationException("probe.json needs probe_id, private_key and server (download it from the panel: Probes → Create)");
@@ -35,11 +37,12 @@ catch (Exception ex) when (ex is IOException or InvalidDataException or InvalidO
     return 1;
 }
 
+using var restartScope = restart;
 string directory = Path.GetDirectoryName(Path.GetFullPath(configPath))!;
 try
 {
-    using var app = new ProbeApp(file, directory, time, log);
-    await ServiceShell.RunAsync(app.RunAsync, log);
+    using var app = new ProbeApp(file, directory, time, log, restart);
+    await ServiceShell.RunAsync(app.RunAsync, log, restart, time);
 }
 catch (Exception ex) when (ex is FormatException or System.Security.Cryptography.CryptographicException)
 {