hainguyents13/mechvibes ? reverse-engineered prompt

Build me a desktop app like Mechvibes, for Windows, macOS, and Linux, that plays satisfying mechanical keyboard and mouse sounds every time I type or click, even when the app is in the background.

I want a clean home screen where I can pick a keyboard sound pack and a mouse sound pack, adjust their volume, and quickly mute everything with a shortcut. It should also let me switch output devices, browse and install sound packs, and add my own from a ZIP or folder. Please include some built in packs and a few ambient mood sounds too.

I’d also like a simple theme and customization area where I can change colors, backgrounds, and a logo, save themes in a gallery, and share a theme as one file. Make sure settings, packs, and updates are remembered after restart. If you need to look up current app docs or platform details, do that.