Add unit tests for RabbitMq and Udp transport servers and clients

- Implemented comprehensive unit tests for RabbitMqTransportServer, covering constructor, disposal, connection management, event handlers, and exception handling.
- Added configuration tests for RabbitMqTransportServer to validate SSL, durable queues, auto-recovery, and custom virtual host options.
- Created unit tests for UdpFrameProtocol, including frame parsing and serialization, header size validation, and round-trip data preservation.
- Developed tests for UdpTransportClient, focusing on connection handling, event subscriptions, and exception scenarios.
- Established tests for UdpTransportServer, ensuring proper start/stop behavior, connection state management, and event handling.
- Included tests for UdpTransportOptions to verify default values and modification capabilities.
- Enhanced service registration tests for Udp transport services in the dependency injection container.

src/Scanner/__Libraries/StellaOps.Scanner.Reachability/SymbolId.cs

@@ -10,8 +10,15 @@ namespace StellaOps.Scanner.Reachability;
 /// to remain reproducible and cacheable across hosts.
 /// </summary>
 /// <remarks>
+/// <para>
 /// Format: <c>sym:{lang}:{stable-fragment}</c>
 /// where stable-fragment is SHA-256(base64url-no-pad) of the canonical tuple per language.
+/// </para>
+/// <para>
+/// <strong>INTEROP NOTE:</strong> This static class uses SHA-256 for maximum external tool
+/// compatibility. For compliance-profile-aware symbol IDs that respect GOST/SM3/FIPS profiles,
+/// use <see cref="SymbolIdBuilder"/> with an injected <see cref="StellaOps.Cryptography.ICryptoHash"/>.
+/// </para>
 /// </remarks>
 public static class SymbolId
 {