4/7 Engineer

I've been at a new job for about a month. So far it's great, catered meals, WFH days, nice work-life balance and so-on. Yesterday I had my first 1:1 with my manager, in which he told me the company has rated me as a "4 out of 7" in terms of skill. The conversation was pretty friendly, we were laughing etc. but as the day went on I kept thinking "4 out of 7? Based on what metrics?". I asked my manager what the rating is based on over Slack, no response. Later in the day after we had talked about other stuff, asked again briefly, no response. What the job has been like so far: • I worked with design in my 1st week to prototype 3 different design systems in CRA apps – basically todo-list apps using different UI libraries. The goal was to see which React app was easiest for designers or Rails devs (and anyone else who is anti-styled components) to jump in and modify styles, and which system seemed easiest to extend. Ended up choosing a system, and building a b