objective-see/LuLu ? reverse-engineered prompt

Build me a simple macOS firewall app like LuLu that lets me see and control which apps are trying to make outgoing network connections.

I want a clean, native Mac app that watches for connection attempts, pops up an alert when something new tries to go online, and lets me allow or block it. It should remember my choices, show a list of rules or trusted apps, and make it easy to change or remove those rules later. Keep the design lightweight and Mac like, with a small status bar style app and a straightforward settings window.

Please make it feel polished and safe, with clear messaging so a normal person can understand what is happening. If you need current macOS or security API details, look up the latest docs online and use the right approach for modern versions of macOS.