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/agent/src/MoShiro.Agent/Program.cs

@@ -22,9 +22,11 @@ for (int i = 0; i < args.Length - 1; i++)
 
 AgentConfig config;
 LoadedNodeIdentity identity;
+RestartController restart;
 try
 {
     config = NodeConfig.Load(configPath, AgentConfigContext.Default.AgentConfig);
+    restart = new RestartController(RestartSchedule.Resolve(config.RestartAt));
     identity = LoadedNodeIdentity.Load(config.Fleet.IdentityDir);
 }
 catch (Exception ex) when (ex is IOException or InvalidDataException or InvalidOperationException or System.Text.Json.JsonException or System.Security.Cryptography.CryptographicException)
@@ -33,10 +35,11 @@ catch (Exception ex) when (ex is IOException or InvalidDataException or InvalidO
     return 1;
 }
 
+using var restartScope = restart;
 using (identity)
 {
-    using var app = new AgentApp(config, identity, Path.GetDirectoryName(Path.GetFullPath(configPath))!, time, log);
-    await ServiceShell.RunAsync(app.RunAsync, log);
+    using var app = new AgentApp(config, identity, Path.GetDirectoryName(Path.GetFullPath(configPath))!, time, log, restart);
+    await ServiceShell.RunAsync(app.RunAsync, log, restart, time);
 }
 
 return 0;