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/S7AddressBuilderTests.cs

@@ -0,0 +1,20 @@
+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 S7AddressBuilderTests
+{
+    [Theory]
+    [InlineData("DB", 10, 20, "REAL", "DB10.DBD20:REAL")]
+    [InlineData("DB", 1, 0, "X", "DB1.DBX0.0:X")]
+    [InlineData("DB", 5, 4, "W", "DB5.DBW4:W")]
+    [InlineData("DB", 2, 6, "B", "DB2.DBB6:B")]
+    [InlineData("M", 1, 0, "X", "M0.0:X")]
+    [InlineData("M", 1, 4, "W", "M4:W")]
+    [InlineData("I", 1, 0, "B", "I0:B")]
+    [InlineData("Q", 1, 2, "W", "Q2:W")]
+    public void Build_Canonical(string area, int dbNumber, int offset, string s7Type, string expected)
+        => S7AddressBuilder.Build(area, dbNumber, offset, s7Type).ShouldBe(expected);
+}