feat(adminui): DriverTagPicker modal + 9 static address builders

- DriverTagPicker shell: modal chrome + per-driver picker body
  rendered as ChildContent.
- 9 picker bodies (Modbus/AbCip/AbLegacy/S7/TwinCat/FOCAS/
  OpcUaClient/Galaxy/Historian.Wonderware). 5 have computed
  builder logic + unit tests; 4 are free-text passthroughs
  (live browse for OPC UA + Galaxy is a documented follow-up).
- Each typed driver page gets a "Pick address" button that opens
  the modal with the matching body. Picked address surfaces in
  the modal footer for manual copy — no JS interop in v1.

tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Pickers/FocasAddressBuilderTests.cs

@@ -0,0 +1,16 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.AdminUI.Components.Shared.Drivers.Pickers;
+
+namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests.Pickers;
+
+public sealed class FocasAddressBuilderTests
+{
+    [Theory]
+    [InlineData("axis", 5, "axis:5")]
+    [InlineData("spindle", 0, "spindle:0")]
+    [InlineData("program", 100, "program:100")]
+    [InlineData("status", 1, "status:1")]
+    public void Build_Canonical(string group, int parameterId, string expected)
+        => FocasAddressBuilder.Build(group, parameterId).ShouldBe(expected);
+}