Built tokei-api web app in 10 hours using AI agents, Crystal language & Kemal framework on Koyeb & Neon services. First time building a full-fledged web app!

Creating `bat-c`, a C wrapper for Rust's `bat` syntax highlighting lib, & making it callable from Crystal. Challenges include large library size & inefficient internal structure. Sample code & GitHub Actions integration provided.

Scan Linux dirs with gpscan, a Rust CLI tool that outputs GrandPerspective-compatible files. Visualize disk usage on Mac with ease! Download gpscan from GitHub: https://github.com/kojix2/gpscan