I built this site with Hugo. It uses the custom theme based on hello-firend-hg theme. The source code for my theme is here. The page itself and its content have not been open-sourced yet.
My page stats contains a post graph which uses the Hugo-posts-graph script to generate a github-like graph when I add a new post.
I deploy my site using Laravel forge, which takes the source code from my GitHub repository and builds the site on my own server running on Hetzner cloud.
Posts from this page are cross-posted to social sites as mastodon or bluesky using the Micro.blog service.
I create content for this site using Obsidian or directly in VS Code Editor, which I commit directly to the repository, or I can use Github Issues to create posts directly from my mobile phone and Github application.