feat(gateway): configurable worker write-completion wait (MxGateway:Worker:WriteCompletionWaitMilliseconds)

src/ZB.MOM.WW.MxGateway.Server/Workers/WorkerProcessLauncher.cs

@@ -21,6 +21,14 @@ public sealed class WorkerProcessLauncher : IWorkerProcessLauncher
     public const string WorkerPipeConnectAttemptTimeoutEnvironmentVariableName =
         "MXGATEWAY_WORKER_PIPE_CONNECT_ATTEMPT_TIMEOUT_MS";
 
+    /// <summary>
+    /// Conveys MxGateway:Worker:WriteCompletionWaitMilliseconds to the worker:
+    /// the bounded wait for the OnWriteComplete callback on
+    /// WriteSecured/WriteSecured2 replies. 0 disables the wait.
+    /// </summary>
+    public const string WorkerWriteCompletionWaitEnvironmentVariableName =
+        "MXGATEWAY_WORKER_WRITE_COMPLETION_WAIT_MS";
+
     private readonly IWorkerProcessFactory _processFactory;
     private readonly IWorkerStartupProbe _startupProbe;
     private readonly GatewayMetrics _metrics;
@@ -175,6 +183,8 @@ public sealed class WorkerProcessLauncher : IWorkerProcessLauncher
         startInfo.Environment[WorkerNonceEnvironmentVariableName] = request.Nonce;
         startInfo.Environment[WorkerPipeConnectAttemptTimeoutEnvironmentVariableName] =
             _workerOptions.PipeConnectAttemptTimeoutMilliseconds.ToString(System.Globalization.CultureInfo.InvariantCulture);
+        startInfo.Environment[WorkerWriteCompletionWaitEnvironmentVariableName] =
+            _workerOptions.WriteCompletionWaitMilliseconds.ToString(System.Globalization.CultureInfo.InvariantCulture);
 
         commandLine = new WorkerProcessCommandLine(executablePath, arguments);