Working on improving Lume's onboarding process based on #nostrdesign reviews.

https://github.com/luminous-devs/lume/issues/83 by nostr:npub10000003zmk89narqpczy4ff6rnuht2wu05na7kpnh3mak7z2tqzsv8vwqk
https://github.com/luminous-devs/lume/issues/85 by nostr:npub1r0rs5q2gk0e3dk3nlc7gnu378ec6cnlenqp8a3cjhyzu6f8k5sgs4sq9ac