How I built an encrypted digital ecosystem (messenger, social, search, maps) as a solo developer

I'm a solo developer concerned about privacy. I built SkyCitadel, an all-in-one encrypted platform (messenger, social, search, maps). All user content is encrypted client-side – the server cannot read messages or posts. It's free, open source (soon), and impossible to block. Would appreciate a security review from this community.

Link: https://skycitadel.onrender.com