feat: establish secure update foundation

internal/appupdate/version_test.go

@@ -10,6 +10,7 @@ func TestCompareVersionsUsesStrictStableSemanticVersions(t *testing.T) {
 		want  int
 	}{
 		{left: "v1.2.2", right: "v1.2.3", want: -1},
+		{left: "v1.3.0", right: "v2.0.0", want: -1},
 		{left: "v2.0.0", right: "v1.99.99", want: 1},
 		{left: "v1.2.2", right: "v1.2.2", want: 0},
 	}