fix: unused certRepo variable and missing revocation wiring

- revocation_test.go: certRepo unused in TestGenerateDERCRL_Success,
  replaced with blank identifier
- lifecycle_test.go: missing revocationRepo init and setter calls
  (SetRevocationRepo, SetNotificationService, SetIssuerRegistry)
  that negative_test.go already had

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/integration/lifecycle_test.go

@@ -52,6 +52,10 @@ func TestCertificateLifecycle(t *testing.T) {
 	policyService := service.NewPolicyService(policyRepo, auditService)
 	certificateService := service.NewCertificateService(certRepo, policyService, auditService)
 	notificationService := service.NewNotificationService(notifRepo, make(map[string]service.Notifier))
+	revocationRepo := newMockRevocationRepository()
+	certificateService.SetRevocationRepo(revocationRepo)
+	certificateService.SetNotificationService(notificationService)
+	certificateService.SetIssuerRegistry(issuerRegistry)
 	renewalService := service.NewRenewalService(certRepo, jobRepo, renewalPolicyRepo, nil, auditService, notificationService, issuerRegistry, "server")
 	deploymentService := service.NewDeploymentService(jobRepo, targetRepo, agentRepo, certRepo, auditService, notificationService)
 	jobService := service.NewJobService(jobRepo, renewalService, deploymentService, logger)

internal/service/revocation_test.go

@@ -412,7 +412,7 @@ func TestRevokeCertificate_HandlerInterfaceMethod(t *testing.T) {
 // M15b: CRL and OCSP Service Tests
 
 func TestGenerateDERCRL_Success(t *testing.T) {
-	svc, certRepo, revocationRepo, _ := newRevocationTestService()
+	svc, _, revocationRepo, _ := newRevocationTestService()
 
 	// Add some revoked certificates to the repo
 	now := time.Now()