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/Server/ZB.MOM.WW.OtOpcUa.Admin/Security/LdapOptions.cs

@@ -0,0 +1,38 @@
+namespace ZB.MOM.WW.OtOpcUa.Admin.Security;
+
+/// <summary>
+///     LDAP + role-mapping configuration for the Admin UI. Bound from <c>appsettings.json</c>
+///     <c>Authentication:Ldap</c> section. Defaults point at the local GLAuth dev instance (see
+///     <c>C:\publish\glauth\auth.md</c>).
+/// </summary>
+public sealed class LdapOptions
+{
+    public const string SectionName = "Authentication:Ldap";
+
+    public bool Enabled { get; set; } = true;
+    public string Server { get; set; } = "localhost";
+    public int Port { get; set; } = 3893;
+    public bool UseTls { get; set; }
+
+    /// <summary>Dev-only escape hatch — must be <c>false</c> in production.</summary>
+    public bool AllowInsecureLdap { get; set; }
+
+    public string SearchBase { get; set; } = "dc=lmxopcua,dc=local";
+
+    /// <summary>
+    ///     Service-account DN used for search-then-bind. When empty, a direct-bind with
+    ///     <c>cn={user},{SearchBase}</c> is attempted.
+    /// </summary>
+    public string ServiceAccountDn { get; set; } = string.Empty;
+    public string ServiceAccountPassword { get; set; } = string.Empty;
+
+    public string DisplayNameAttribute { get; set; } = "cn";
+    public string GroupAttribute { get; set; } = "memberOf";
+
+    /// <summary>
+    ///     Maps LDAP group name → Admin role. Group match is case-insensitive. A user gets every
+    ///     role whose source group is in their membership list. Example dev mapping:
+    ///     <code>"ReadOnly":"ConfigViewer","ReadWrite":"ConfigEditor","AlarmAck":"FleetAdmin"</code>
+    /// </summary>
+    public Dictionary<string, string> GroupToRole { get; set; } = new(StringComparer.OrdinalIgnoreCase);
+}