feat(ablegacy): Transport option selects native or libplctag across driver, probe and CLI

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.Cli/AbLegacyCommandBase.cs

@@ -25,6 +25,12 @@ public abstract class AbLegacyCommandBase : DriverCommandBase
         "Slc500 / MicroLogix / Plc5 / LogixPccc (default Slc500).")]
     public AbLegacyPlcFamily PlcType { get; init; } = AbLegacyPlcFamily.Slc500;
 
+    /// <summary>Gets the transport stack used to reach the PLC.</summary>
+    [CommandOption("transport", Description =
+        "Transport stack: libplctag (default) or native (managed EtherNet/IP + PCCC; PLC-5 N-file reads only, " +
+        "no status-bit writes, LogixPccc unverified).")]
+    public AbLegacyTransport Transport { get; init; } = AbLegacyTransport.Libplctag;
+
     /// <summary>Gets the per-operation timeout in milliseconds.</summary>
     [CommandOption("timeout-ms", Description = "Per-operation timeout in ms (default 5000).")]
     public int TimeoutMs { get; init; } = 5000;
@@ -56,6 +62,7 @@ public abstract class AbLegacyCommandBase : DriverCommandBase
         RawTags = [.. tags.Select(t => new RawTagEntry(
             t.Name, AbLegacyTagDefinitionFactory.ToTagConfig(t), t.WriteIdempotent, DeviceName: t.DeviceHostAddress))],
         Timeout = Timeout,
+        Transport = Transport,
         Probe = new AbLegacyProbeOptions { Enabled = false },
     };
 

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.AbLegacy.Cli/Program.cs

@@ -5,7 +5,7 @@ return await new CliApplicationBuilder()
     .SetExecutableName("otopcua-ablegacy-cli")
     .SetDescription(
         "OtOpcUa AB Legacy test-client — ad-hoc probe + PCCC N/F/B/L-file reads/writes + " +
-        "polled subscriptions against SLC 500 / MicroLogix / PLC-5 devices via libplctag. " +
+        "polled subscriptions against SLC 500 / MicroLogix / PLC-5 devices via libplctag or the native transport. " +
         "Addresses use PCCC convention: N7:0, F8:0, B3:0/3, L19:0, ST17:0.")
     .Build()
     .RunAsync(args);