SJ.Wu

Software Engineer

I build backend microservices that run in production, and I’m currently working on applied machine learning / computer vision for identity verification — liveness detection and deepfake detection. Earlier in my career I was an SSD firmware engineer, so I’m comfortable from the bare metal up to distributed systems and ML pipelines.

Recent

Avatar, OG Image, and Favicon in Blowfish: Three Things, Three Params

7 June 2026·5 mins

Hugo Blowfish Open Graph Favicon

The profile avatar, the social-share OG image, and the browser favicon look like one ‘site picture’ — but in Blowfish they are three independent settings in three different places. Here’s which param does what, why homepageImage is none of them, and how I generated an SJ favicon from one command.

Moving a GitHub Pages Site to a Custom Domain (Cloudflare Registrar)

7 June 2026·5 mins

GitHub Pages Cloudflare DNS Hugo

Pointing a freshly registered apex domain at a GitHub Pages site, end to end: the repo changes, the Cloudflare DNS records, the one proxy setting that breaks HTTPS, and how to verify the cutover — plus domain verification to stop anyone hijacking the name.

Building This Site with AI in a Day: From Résumé and Notes to an Automated Deploy

7 June 2026·4 mins

AI Hugo GitHub Actions Claude Code

Using Claude Code with Hugo + Blowfish + GitHub Actions to turn a PDF résumé and a pile of scattered tech notes into this bilingual, auto-deployed personal site — in a day. The workflow, the disclosure discipline, and the gotchas.

A Terminal Dev Environment Built for AI Collaboration: NeoVim + Yazi + tmux + LazyGit × Claude Code

1 May 2026·9 mins

Claude Code AI NeoVim Tmux Terminal

Claude Code is a terminal-native AI coding tool. Wrapping it in tmux + NeoVim + Yazi + LazyGit gives an all-keyboard, all-terminal workflow where the human focuses on reviewing and gatekeeping what the AI produces — plus the gotchas I hit setting it up.

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