feat(captain-memory): add ContradictionCheckerJob

enterprise/app/jobs/captain/contact_memories/contradiction_checker_job.rb

@@ -1,14 +1,10 @@
 class Captain::ContactMemories::ContradictionCheckerJob < ApplicationJob
   queue_as :low
 
-  # TODO(phase3-task3.2): implement full contradiction detection logic.
-  # This skeleton exists so Captain::ContactMemories::UpdateEmbeddingJob can
-  # enqueue it when run_contradiction_check is true. Task 3.2 will replace
-  # the body with the real implementation.
   def perform(memory_id)
     memory = Captain::ContactMemory.find_by(id: memory_id)
     return if memory.blank?
 
-    # no-op until task 3.2
+    Captain::ContactMemories::ContradictionCheckerService.new(memory: memory).call
   end
 end

spec/enterprise/jobs/captain/contact_memories/contradiction_checker_job_spec.rb

@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+RSpec.describe Captain::ContactMemories::ContradictionCheckerJob do
+  let(:memory) { create(:captain_contact_memory) }
+
+  it 'delegates to ContradictionCheckerService' do
+    service = instance_double(Captain::ContactMemories::ContradictionCheckerService, call: nil)
+    expect(Captain::ContactMemories::ContradictionCheckerService).to receive(:new).with(memory: memory).and_return(service)
+    described_class.perform_now(memory.id)
+  end
+
+  it 'no-ops on missing memory' do
+    expect { described_class.perform_now(99_999_999) }.not_to raise_error
+  end
+end