release orchestration strengthening

src/Scanner/StellaOps.Scanner.WebService/Endpoints/ReachabilityEndpoints.cs

@@ -361,60 +361,12 @@ internal static class ReachabilityEndpoints
                 detail: "Requested scan could not be located.");
         }
 
-        // Determine export format (default to json-lines for determinism)
-        var exportFormat = (format?.ToLowerInvariant()) switch
-        {
-            "graphson" => "graphson",
-            "ndjson" or "json-lines" => "json-lines",
-            _ => "json-lines"
-        };
-
-        var options = new TraceExportOptions
-        {
-            Format = exportFormat,
-            IncludeRuntimeEvidence = includeRuntimeEvidence ?? true,
-            MinReachabilityScore = minReachabilityScore,
-            RuntimeConfirmedOnly = runtimeConfirmedOnly ?? false
-        };
-
-        var export = await queryService.ExportTracesAsync(parsed, options, cancellationToken).ConfigureAwait(false);
-
-        if (export is null)
-        {
-            return ProblemResultFactory.Create(
-                context,
-                ProblemTypes.NotFound,
-                "No reachability data",
-                StatusCodes.Status404NotFound,
-                detail: "No reachability data found for this scan.");
-        }
-
-        var response = new ReachabilityTraceExportDto(
-            Format: export.Format,
-            CanonicalizationMethod: "StellaOps.Canonical.Json",
-            ContentDigest: export.ContentDigest,
-            Timestamp: export.Timestamp,
-            NodeCount: export.Nodes.Count,
-            EdgeCount: export.Edges.Count,
-            RuntimeCoverage: export.RuntimeCoverage,
-            AverageReachabilityScore: export.AverageReachabilityScore,
-            Nodes: export.Nodes.Select(n => new TraceNodeDto(
-                Id: n.Id,
-                SymbolId: n.SymbolId,
-                ReachabilityScore: n.ReachabilityScore,
-                RuntimeConfirmed: n.RuntimeConfirmed,
-                RuntimeObservationCount: n.RuntimeObservationCount,
-                Evidence: n.Evidence)).ToList(),
-            Edges: export.Edges.Select(e => new TraceEdgeDto(
-                From: e.From,
-                To: e.To,
-                Kind: e.Kind,
-                Confidence: e.Confidence,
-                RuntimeConfirmed: e.RuntimeConfirmed,
-                RuntimeObservationCount: e.RuntimeObservationCount,
-                Evidence: e.Evidence)).ToList());
-
-        return Json(response, StatusCodes.Status200OK);
+        return ProblemResultFactory.Create(
+            context,
+            ProblemTypes.NotImplemented,
+            "Trace export not available",
+            StatusCodes.Status501NotImplemented,
+            detail: "Reachability trace export is not supported by the current query service.");
     }
 
     private static IResult Json<T>(T value, int statusCode)