omrajnexus31173/NEXUS-CAM-STUDIO ? reverse-engineered prompt

Build me a Windows desktop app for recording and streaming that feels like a polished creator tool.

I want one place where I can pick a screen, a region, or a visible window, add a webcam overlay, use my microphone, and record everything into a real video file with pause and resume. It should also let me connect an Android phone over the local network with a QR code so the phone can act as a camera, and in the newer version, its microphone too. The phone connection should stay local and encrypted, with no cloud account or external server needed.

Please include background blur and simple solid color background options for the camera, plus a clean live preview and audio meters. Save recordings automatically when I stop, and make the whole thing easy to launch on Windows without needing extra setup if possible. If you need to check current library docs or APIs, go ahead and look them up online.