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>

src/Drivers/Cli/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Cli/Commands/BrowseCommand.cs

@@ -0,0 +1,101 @@
+using CliFx.Attributes;
+using CliFx.Infrastructure;
+using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
+
+namespace ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Cli.Commands;
+
+/// <summary>
+///     Walk the target's symbol table (ADS <c>SymbolLoaderFactory</c>, flat mode) and print every
+///     symbol the driver's atomic-type mapper recognizes. Same path <c>DiscoverAsync</c> takes
+///     when <c>EnableControllerBrowse = true</c> — structured UDTs / function-block instances
+///     won't appear because the driver filters to the supported primitive surface.
+/// </summary>
+[Command("browse", Description = "Enumerate controller symbols via the driver's DiscoverAsync walk.")]
+public sealed class BrowseCommand : TwinCATCommandBase
+{
+    [CommandOption("prefix", Description =
+        "Case-sensitive instance-path prefix to filter on (e.g. 'GVL_Fixture' or " +
+        "'MAIN.'). Empty (default) prints everything.")]
+    public string? Prefix { get; init; }
+
+    [CommandOption("max", Description =
+        "Maximum number of symbols to print. 0 = unbounded (default 500 for large " +
+        "controllers — flat-mode symbol counts easily top 10k).")]
+    public int Max { get; init; } = 500;
+
+    public override async ValueTask ExecuteAsync(IConsole console)
+    {
+        ConfigureLogging();
+        var ct = console.RegisterCancellationHandler();
+
+        // Browse-only — no declared tags. EnableControllerBrowse=true flips DiscoverAsync's
+        // symbol-walk on so every recognized primitive surfaces through the builder.
+        var options = new TwinCATDriverOptions
+        {
+            Devices = [new TwinCATDeviceOptions(Gateway, $"cli-{AmsNetId}:{AmsPort}")],
+            Tags = [],
+            Timeout = Timeout,
+            Probe = new TwinCATProbeOptions { Enabled = false },
+            UseNativeNotifications = !PollOnly,
+            EnableControllerBrowse = true,
+        };
+
+        await using var driver = new TwinCATDriver(options, DriverInstanceId);
+        var builder = new CollectingAddressSpaceBuilder();
+        try
+        {
+            await driver.InitializeAsync("{}", ct);
+            await driver.DiscoverAsync(builder, ct);
+        }
+        finally
+        {
+            await driver.ShutdownAsync(CancellationToken.None);
+        }
+
+        var matched = builder.Variables
+            .Where(v => string.IsNullOrEmpty(Prefix) || v.BrowseName.StartsWith(Prefix, StringComparison.Ordinal))
+            .ToList();
+        var printLimit = Max <= 0 ? matched.Count : Math.Min(Max, matched.Count);
+
+        await console.Output.WriteLineAsync($"AMS:          {AmsNetId}:{AmsPort}");
+        await console.Output.WriteLineAsync(
+            $"Symbols:      {matched.Count} matched ({builder.Variables.Count} total), showing {printLimit}");
+        await console.Output.WriteLineAsync();
+
+        foreach (var v in matched.Take(printLimit))
+        {
+            var access = v.Info.SecurityClass == SecurityClassification.ViewOnly ? "RO" : "RW";
+            await console.Output.WriteLineAsync($"  [{access}] {v.Info.DriverDataType,-8} {v.BrowseName}");
+        }
+
+        if (matched.Count > printLimit)
+            await console.Output.WriteLineAsync(
+                $"  … {matched.Count - printLimit} more — raise --max or tighten --prefix");
+    }
+
+    private sealed class CollectingAddressSpaceBuilder : IAddressSpaceBuilder
+    {
+        public List<(string BrowseName, DriverAttributeInfo Info)> Variables { get; } = [];
+
+        public IAddressSpaceBuilder Folder(string browseName, string displayName) => this;
+
+        public IVariableHandle Variable(string browseName, string displayName, DriverAttributeInfo info)
+        {
+            Variables.Add((browseName, info));
+            return new Handle(info.FullName);
+        }
+
+        public void AddProperty(string name, DriverDataType type, object? value) { }
+
+        private sealed class Handle(string fullRef) : IVariableHandle
+        {
+            public string FullReference => fullRef;
+            public IAlarmConditionSink MarkAsAlarmCondition(AlarmConditionInfo info) => new NullSink();
+        }
+
+        private sealed class NullSink : IAlarmConditionSink
+        {
+            public void OnTransition(AlarmEventArgs args) { }
+        }
+    }
+}