Small macos fixes

app/src/main/resources/io/xpipe/app/resources/style/browser.css

@@ -1,3 +1,7 @@
+.root:macos .browser .browser-content, .root:macos .browser .top-bar {
+    -fx-font-family: "Roboto";
+}
+
 .browser .visual-display {
     -fx-border-color: -color-border-default;
     -fx-border-width: 2 1 1 1;

ext/base/src/main/java/io/xpipe/ext/base/identity/SshIdentityStateManager.java

@@ -95,7 +95,8 @@ public class SshIdentityStateManager {
                 .start()) {
             var r = c.readStdoutAndStderr();
             if (c.getExitCode() != 0) {
-                var posixMessage = sc.getOsType() != OsType.WINDOWS ? " and the SSH_AUTH_SOCK variable." : "";
+                var posixMessage = sc.getOsType() != OsType.WINDOWS ? authSock != null ? " and the socket " + authSock + "."
+                        : " and the SSH_AUTH_SOCK variable." : "";
                 var ex = new IllegalStateException("Unable to list agent identities via command ssh-add -l:\n" + r[0]
                         + "\n"
                         + r[1]