Please join the PageKey GitLab and introduce yourself! We'll be happy to help you get started contributing to the codebase and answer any questions.
Feel free to discuss any feature ideas informally in Discord. If you want to get serious about implementing it, create a branch and add a folder for your feature in doc/architecture. You can copy _template.md into that folder and rename it to index.md. When you think you're ready, create a merge request for your branch and tag the appropriate people for review.