feat(scanner): Implement Deno analyzer and associated tests

- Added Deno analyzer with comprehensive metadata and evidence structure.
- Created a detailed implementation plan for Sprint 130 focusing on Deno analyzer.
- Introduced AdvisoryAiGuardrailOptions for managing guardrail configurations.
- Developed GuardrailPhraseLoader for loading blocked phrases from JSON files.
- Implemented tests for AdvisoryGuardrailOptions binding and phrase loading.
- Enhanced telemetry for Advisory AI with metrics tracking.
- Added VexObservationProjectionService for querying VEX observations.
- Created extensive tests for VexObservationProjectionService functionality.
- Introduced Ruby language analyzer with tests for simple and complex workspaces.
- Added Ruby application fixtures for testing purposes.

src/Concelier/StellaOps.Concelier.WebService/Program.cs

@@ -902,9 +902,8 @@ var advisoryChunksEndpoint = app.MapGet("/advisories/{advisoryKey}/chunks", asyn
     }
 
     var duration = timeProvider.GetElapsedTime(requestStart);
-    var guardrailCounts = cacheHit
-        ? ImmutableDictionary<AdvisoryChunkGuardrailReason, int>.Empty
-        : buildResult.Telemetry.GuardrailCounts;
+    var guardrailCounts = buildResult.Telemetry.GuardrailCounts ??
+        ImmutableDictionary<AdvisoryChunkGuardrailReason, int>.Empty;
 
     telemetry.TrackChunkResult(new AdvisoryAiChunkRequestTelemetry(
         tenant,