MrCasiopea/G-Raw-Converter-Extension ? reverse-engineered prompt

Build me a simple browser extension for GitHub that lets me open an image or video file page, click the extension icon, and instantly copy the direct raw link to my clipboard.

It should work on common GitHub media files like png, jpg, gif, svg, webp, mp4, webm, mov, and ogg, and turn the normal GitHub file URL into the raw.githubusercontent.com version. If I am on a page that is not a supported file, it should not copy anything and should show a small friendly message instead.

Keep it lightweight and private, with no account stuff, no tracking, and no network calls. Use a clean GitHub looking toast notification in the corner to confirm success. Make it work in Chromium browsers like Chrome, Brave, and Edge, and set it up so I can load it as an unpacked extension.