literally say "This unofficial extension allows you to open the Lumo AI chat interface on the sidebar" in the 3rd line on description, is veary clear than is not an official app and never pretend to be
also all code is public on codeberg so every one can review and build it, even with reproducible builds instructions

but any way thanks for your review i will make more noticeable than is not an official proton extension


EDIT: i add this to the short description to make is unofficial state more clear
"A Firefox Extension to run Lumo AI Chatbot by Proton web page on your sidebar. (Unofficial)"