This really is amazing. Probably one of the best clients that's out there at the moment. I recently built a one myself with Angular (https://github.com/hdjirdeh/angular2-hn) so I'm always amazed with all the different clients out there with their own unique twist.
I've always been interested in using Vue, how do you like the framework? Also, which Hacker News API are you using to power this? I'm on mobile so I can't see any of the requests at the moment. But since this is SSR, I probably wouldn't be able to see the API calls anyway.