refactor: rename ScadaLink → ZB.MOM.WW.ScadaBridge (code + projects + namespaces)

Solution + 23 src projects + 26 test projects renamed; folders, csproj,
namespaces, and ScadaLinkDbContext/ScadaBridgeDbContext class updated.
ActorSystem "scadalink" → "scadabridge", Akka seed-node URLs migrated.
SQL roles/logins, LDAP domains, CLI command name, and CLI config dir
(~/.scadalink → ~/.scadabridge) also renamed.

Build green; 5 Host.Tests fail awaiting SQL login rename in next commit.
Pre-existing StaleTagMonitor timing flakes unchanged.

Rename script committed at tools/rename-to-scadabridge.sh.

src/ZB.MOM.WW.ScadaBridge.Transport/Import/SemanticValidationException.cs

@@ -0,0 +1,39 @@
+namespace ZB.MOM.WW.ScadaBridge.Transport.Import;
+
+/// <summary>
+/// Thrown when the post-apply semantic validation pass detects that the merged
+/// target configuration would not be deployable — e.g. a template script
+/// references a SharedScript or ExternalSystem that exists in neither the
+/// bundle nor the (post-merge) target database.
+/// <para>
+/// The exception is caught inside <see cref="BundleImporter.ApplyAsync"/> to
+/// roll back the transaction, emit a <c>BundleImportFailed</c> audit row, and
+/// re-throw to the caller so the UI can surface the specific errors. It is
+/// deliberately distinct from <see cref="InvalidOperationException"/> so the
+/// caller can distinguish "your bundle is bad" from "the import infra is bad".
+/// </para>
+/// </summary>
+public sealed class SemanticValidationException : Exception
+{
+    /// <summary>Gets the list of semantic validation error messages that caused this exception.</summary>
+    public IReadOnlyList<string> Errors { get; }
+
+    /// <summary>
+    /// Initializes a new <see cref="SemanticValidationException"/> with the given error list.
+    /// </summary>
+    /// <param name="errors">The list of validation error messages to include in the exception.</param>
+    public SemanticValidationException(IReadOnlyList<string> errors)
+        : base(BuildMessage(errors))
+    {
+        Errors = errors ?? throw new ArgumentNullException(nameof(errors));
+    }
+
+    private static string BuildMessage(IReadOnlyList<string> errors)
+    {
+        if (errors is null || errors.Count == 0)
+        {
+            return "Bundle semantic validation failed.";
+        }
+        return "Bundle semantic validation failed: " + string.Join("; ", errors);
+    }
+}