chore: organize solution into module folders (Core/Server/Drivers/Client/Tooling)

Group all 69 projects into category subfolders under src/ and tests/ so the
Rider Solution Explorer mirrors the module structure. Folders: Core, Server,
Drivers (with a nested Driver CLIs subfolder), Client, Tooling.

- Move every project folder on disk with git mv (history preserved as renames).
- Recompute relative paths in 57 .csproj files: cross-category ProjectReferences,
  the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external
  mxaccessgw refs in Driver.Galaxy and its test project.
- Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders.
- Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL,
  integration, install).

Build green (0 errors); unit tests pass. Docs left for a separate pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/AbCipReadSmokeTests.cs

@@ -0,0 +1,50 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
+using ZB.MOM.WW.OtOpcUa.Driver.AbCip;
+
+namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests;
+
+/// <summary>
+///     End-to-end smoke tests that exercise the real libplctag stack against a running
+///     <c>ab_server</c>. Skipped when the binary isn't on PATH (<see cref="AbServerFactAttribute"/>).
+///     Parametrized over <see cref="KnownProfiles.All"/> so one test file covers every family
+///     (ControlLogix / CompactLogix / Micro800 / GuardLogix).
+/// </summary>
+[Trait("Category", "Integration")]
+[Trait("Requires", "AbServer")]
+public sealed class AbCipReadSmokeTests
+{
+    public static IEnumerable<object[]> Profiles =>
+        KnownProfiles.All.Select(p => new object[] { p });
+
+    [AbServerTheory]
+    [MemberData(nameof(Profiles))]
+    public async Task Driver_reads_seeded_DInt_from_ab_server(AbServerProfile profile)
+    {
+        var fixture = new AbServerFixture(profile);
+        await fixture.InitializeAsync();
+        try
+        {
+            var deviceUri = $"ab://127.0.0.1:{fixture.Port}/1,0";
+            var drv = new AbCipDriver(new AbCipDriverOptions
+            {
+                Devices = [new AbCipDeviceOptions(deviceUri, profile.Family)],
+                Tags = [new AbCipTagDefinition("Counter", deviceUri, "TestDINT", AbCipDataType.DInt)],
+                Timeout = TimeSpan.FromSeconds(5),
+            }, $"drv-smoke-{profile.Family}");
+
+            await drv.InitializeAsync("{}", CancellationToken.None);
+            var snapshots = await drv.ReadAsync(["Counter"], CancellationToken.None);
+
+            snapshots.Single().StatusCode.ShouldBe(AbCipStatusMapper.Good);
+            drv.GetHealth().State.ShouldBe(DriverState.Healthy);
+
+            await drv.ShutdownAsync(CancellationToken.None);
+        }
+        finally
+        {
+            await fixture.DisposeAsync();
+        }
+    }
+}