pulseaudio/pavucontrol ? reverse-engineered prompt

Build me a simple desktop app for controlling PulseAudio audio settings, something like a volume control panel for speakers, microphones, and output devices.

I want a clean window where I can see all audio devices and streams, change the volume for each one, mute and unmute them, and switch the default output or input device when needed. It should feel like a normal Linux utility, not a flashy app, and it should be easy to understand at a glance.

Please make it work with translations in mind, and keep the interface practical and lightweight. If you need current implementation details or best practices for PulseAudio and the build setup, look up the latest docs online and use whatever fits this project best.