fix: improve apm error reporting

Previously, errors were only being logged with logger.info and rendered
as JSON responses, but weren't being properly reported to APM services.
This meant that critical errors like 500s were only visible in application
logs but not in our monitoring systems, making it harder to track and debug
issues in production.

This commit ensures that all errors are properly reported to configured
APM services by:
1. Adding explicit APM error reporting alongside logging
2. Using proper APM reporting methods for each service
3. Maintaining consistent error handling across all APM integrations

These changes ensure that errors are properly captured in our monitoring
systems,improving our ability to track and debug production issues.

app/controllers/concerns/request_exception_handler.rb

@@ -23,24 +23,29 @@ module RequestExceptionHandler
     Current.reset
   end
 
+  def render_error(message, status, error = nil)
+    log_handled_error(error) if error
+    render json: { error: message }, status: status
+  end
+
   def render_unauthorized(message)
-    render json: { error: message }, status: :unauthorized
+    render_error(message, :unauthorized)
   end
 
   def render_not_found_error(message)
-    render json: { error: message }, status: :not_found
+    render_error(message, :not_found)
   end
 
   def render_could_not_create_error(message)
-    render json: { error: message }, status: :unprocessable_entity
+    render_error(message, :unprocessable_entity)
   end
 
   def render_payment_required(message)
-    render json: { error: message }, status: :payment_required
+    render_error(message, :payment_required)
   end
 
   def render_internal_server_error(message)
-    render json: { error: message }, status: :internal_server_error
+    render_error(message, :internal_server_error)
   end
 
   def render_record_invalid(exception)
@@ -57,6 +62,23 @@ module RequestExceptionHandler
   end
 
   def log_handled_error(exception)
+    return unless exception
+
     logger.info("Handled error: #{exception.inspect}")
+    report_to_apms(exception)
+  end
+
+  def report_to_apms(exception)
+    apm_reporters = {
+      ::NewRelic::Agent => -> { ::NewRelic::Agent.notice_error(exception) },
+      ::Datadog::Tracing => -> { ::Datadog::Tracing.active_span&.set_error(exception) },
+      ::ElasticAPM => -> { ::ElasticAPM.report(exception) },
+      ::ScoutApm::Error => -> { ::ScoutApm::Error.capture(exception) },
+      ::Sentry => -> { ::Sentry.capture_exception(exception) }
+    }
+
+    apm_reporters.each do |apm_module, reporter|
+      reporter.call if defined?(apm_module)
+    end
   end
 end