Added base64 example. Lot of refactoring. (0.37.49)

examples/interactive/input_hidden_example.fun

@@ -0,0 +1,29 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Example: Demonstrate hidden input (no echo) for passwords.
+ *
+ * Added: 2026-01-02
+ */
+
+#include <io/console.fun>
+
+print("=== input_hidden() example ===")
+
+c = Console()
+
+username = c.ask("Username")
+password = c.ask_hidden("Password")
+
+// Do not print the password; just show the username
+print(join(["Hello, ", username, "!"], ""))
+
+/* Expected output:
+Username: hanez
+Password:
+=== input_hidden() example ===
+Hello, hanez!
+*/