Barryyosi/staging ? reverse-engineered prompt

Build me a local app that helps me review staged git changes before I commit them.

I want a browser based interface that opens after I stage files, shows a clean diff view like GitHub, and lets me leave inline comments on changed lines so I can tell my coding agent what to fix next. It should work fully on my machine, with no telemetry or internet needed, and it should be easy to run from the command line.

If a file is markdown or HTML, let me switch between the diff and a rendered preview, and let me comment on selected text in the preview too. I’d also like a standalone preview mode for a single markdown or HTML file even if it is not in a git repo, with live reloading when the file changes.

Make it feel polished and simple to use, and if you need to check current docs or best practices online, go ahead.