Fix IMGUR embeds in UK troch Ghostman

It scans every webpage you visit for embedded imgur.com images and rewrites their URLs to load through DuckDuckGo's image proxy instead — e.g. https://i.imgur.com/fmWwWkZ.png becomes https://external-content.duckduckgo.com/iu/?u=https://i.imgur.com/fmWwWkZ.png.

Specifically, it:

Rewrites <img> tag src and srcset attributes that point to imgur.com
Rewrites background-image: url(...) in inline CSS styles that point to imgur.com
Watches the page continuously (via MutationObserver) so images added later — infinite scroll, dynamically loaded embeds, etc. — get caught too
Skips URLs that are already proxied, so it doesn't double-process anything

Files:

manifest.json — extension config (Manifest V3, requires Firefox 140+ desktop / 142+ Android, declares it collects no user data)
content.js — the actual rewriting logic, injected into every page you visit
README.md — install instructions

What it doesn't do: it doesn't touch links (<a href>) to imgur pages, only actual embedded images, and it collects/transmits no data of its own — the only network effect is that your browser now requests images from DuckDuckGo's proxy instead of imgur directly.