feat(stability): unify readiness and recovery

backend/Extensions/PlatformServiceCollectionExtensions.cs

@@ -1,5 +1,6 @@
 using System.Diagnostics;
 using Nexus.Api.Observability;
+using Nexus.Api.Http;
 using Npgsql;
 using OpenTelemetry;
 using OpenTelemetry.Exporter;
@@ -20,14 +21,14 @@ public static class PlatformServiceCollectionExtensions
         this IServiceCollection services,
         IConfiguration configuration)
     {
-        services.AddOpenApi("v1");
+        services.AddOpenApi("v1", options =>
+            options.AddSchemaTransformer<NexusProblemDetailsSchemaTransformer>());
         services.AddProblemDetails(options =>
         {
             options.CustomizeProblemDetails = context =>
-            {
-                context.ProblemDetails.Extensions["traceId"] =
-                    Activity.Current?.Id ?? context.HttpContext.TraceIdentifier;
-            };
+                NexusProblemDetailsDefaults.Apply(
+                    context.ProblemDetails,
+                    context.HttpContext);
         });
 
         var telemetry = services.AddOpenTelemetry()