abitimalsina-glitch/link-sentinel ? reverse-engineered prompt

Build me a browser extension that checks links on the current webpage when I hover over them, then shows a small tooltip near the cursor telling me if the link looks safe or suspicious. I want it to feel fast and non intrusive, so it should wait a moment before scanning, avoid checking the same URL more than once, and only analyze links that are actually visible on the page. The extension should talk to a local backend API, which then checks the URL against a phishing or safe browsing style service and returns a simple status like safe or malicious.

Please make it in TypeScript, with the extension and server working together cleanly. I also want a basic popup included even if the main feature is the hover scanning. Keep the UI simple and easy to read, and make sure invalid URLs are ignored gracefully. If anything needs current docs or API details, look them up online as needed.