sapegin/dotfiles ? reverse-engineered prompt

Build me a personal macOS dotfiles setup that I can clone and run to configure my machine the way I like it.

I want it to set sensible macOS defaults, install and sync my dotfiles, and keep my shell, Git, and VS Code setup in sync across machines. Please include a custom zsh setup with helpful aliases and a nice prompt, Git aliases, a few useful scripts, and support for installing my preferred VS Code extensions and Obsidian plugins locally. I also want a simple way to open projects quickly, plus room for app specific configs like Firefox and other common tools.

Make it feel polished and easy to maintain, with a clear setup script and update command. If anything needs current docs or best practices, look them up online and use whatever is most reliable.