feat(transport): export site/instance selection end-to-end via CLI + ManagementActor (M8 B4)

src/ZB.MOM.WW.ScadaBridge.Commons/Messages/Management/TransportCommands.cs

@@ -24,7 +24,13 @@ public sealed record ExportBundleCommand(
     IReadOnlyList<string>? ApiMethodNames,
     bool IncludeDependencies,
     string? Passphrase,
-    string SourceEnvironment);
+    string SourceEnvironment,
+    // Additive (M8 B4): site/instance-scoped selection. Sites resolve by
+    // SiteIdentifier (preferred) or Name; instances resolve by UniqueName.
+    // Defaulted null so every existing positional caller keeps compiling; the
+    // handler normalizes null to "select nothing" (or everything under All=true).
+    IReadOnlyList<string>? SiteNames = null,
+    IReadOnlyList<string>? InstanceNames = null);
 
 /// <summary>
 /// Bundle body returned as base64-encoded ZIP. <see cref="ByteCount"/> is the