Avoid explicit ISO 8601 serialization

Author: gasi

lib/capybara_accessibility_audit/reporter.rb

@@ -14,7 +14,7 @@ def add_violation(url:, audit:, timestamp: Time.now)
         # Extract structured data from the audit object
         violation_data = {
           url: url,
-          timestamp: timestamp.iso8601,
+          timestamp: timestamp,
           violations: audit.results.violations.map { |v| violation_to_hash(v) },
           test_engine: audit.results.testEngine,
           test_environment: audit.results.testEnvironment

test/system/reporter_test.rb

@@ -24,7 +24,7 @@ class ReporterStdoutTest < ApplicationSystemTestCase
 
     violation_data = violations.first
     assert_includes violation_data[:url], "/violations"
-    assert_kind_of String, violation_data[:timestamp]
+    assert_kind_of Time, violation_data[:timestamp]
     assert_kind_of Array, violation_data[:violations]
 
     # Check structured violation data