wip snapshot after account logout; squash into the unit commit

Model: fable-5-1

internal/cli/entry_test.go

@@ -654,11 +654,10 @@ func runCheckAfterRewrite(t *testing.T, rewritten, msg string) {
 
 // TestCheckRequireSignatureRefusesOtherSigningKey runs check
 // --require-signature on a manifest signed by another key whose embedded
-// public key block also holds the required key. check must refuse it. It
-// needs gpg and is skipped without it, as the other signing tests are.
-//
-//nolint:paralleltest // signedManifest calls t.Setenv, which bars t.Parallel
+// public key block also holds the required key. check must refuse it.
 func TestCheckRequireSignatureRefusesOtherSigningKey(t *testing.T) {
+	t.Parallel()
+
 	content := []byte("signed file")
 	manifest, required := manifestSignedByAnotherKey(t,
 		map[string][]byte{testFileTxt: content})