feat(go): enrich snapshots with package ownership

go-agent/internal/agent/agent_test.go

@@ -46,6 +46,10 @@ func TestRunAttachesLiveBaselineLifecycle(t *testing.T) {
 	cfg := config.Default()
 	cfg.LogDir = t.TempDir()
 	cfg.BaselineGrace = 0
+	// This fixture exercises listener-baseline lifecycle only. Avoid inheriting
+	// the host's live persistence paths (for example /etc/passwd), whose mtime
+	// would otherwise add an unrelated environment-dependent alert.
+	cfg.Detectors["persistence"] = false
 	calls := 0
 	capture := func() (model.State, error) {
 		calls++