Unfortunately for whatever reason firebaseio.com (which gets called by your extension) is blocked in my country[0]. As a result, this extension doesn't work on my end. But bravo for this! I personally very much liked the highlighted unread comments and being able to reply without living the page. The hovering thing bothers a bit tho[1].
[0]: Then again, CloudFlare gives me an access denied upon opening hn.algolia.com as well.
[1]: Interestingly, the extension suggests "show-user-info-on-hover" to be disabled!
This is rather strange. Which country are you in, may I ask? Also, doesn't this hamper with many other websites you might visit that depend on Firebase?
Currently I'm located in Iran, and yes, many websites that depend on Firebase get automatically blocked (the same goes for medium.com). On top of that, many other websites decide not to provide service to Iran in the first place, so...
That's unfortunate. Also just a small clarification: I don't recommend disabling the "show-user-info-on-hover" feature, it's just there as an example :P
Maybe a stupid question, but why is the extension even talking to Firebase? Skimming the feature list, all of these look like something that should work without connecting anywhere else but HN itself.
[0]: Then again, CloudFlare gives me an access denied upon opening hn.algolia.com as well.
[1]: Interestingly, the extension suggests "show-user-info-on-hover" to be disabled!