New to eBikes - where to start?

Hey everyone!

Just got my first eBike – a commuter-style hybrid, and I'm super excited to start using it for my daily 10-mile round trip on city streets and some paved paths. As a total newbie, I'm wondering what the absolute must-have safety gear is beyond just a helmet? Are there any specific lights, mirrors, or other accessories you seasoned riders swear by for staying safe, especially in traffic? Any tips for a beginner navigating urban environments would be awesome!