Krishna-Avhad/agentation ? reverse-engineered prompt

Build me a small React tool I can drop into an app that helps people give visual feedback to coding agents.

It should add a floating toolbar in the bottom right, and when I turn it on I can click any element on the page to annotate it, select text, drag to select multiple elements, or drag over an empty area to mark a region. I also want a way to pause animations, including CSS, JavaScript, and videos, so I can capture the page in a specific state.

When I make a selection, show a clean visual highlight and let me copy structured feedback that includes useful selectors, element positions, and nearby context so an AI agent can find the exact code I mean. Make it work nicely in both dark and light mode, and keep it simple with no extra runtime dependencies if possible.

This is for desktop browsers only, and it should feel polished and easy to use right away. If you need to check current docs or best practices, look them up online.