~/blog

When a coding agent keeps ignoring a repo convention, a 15-line diff check fails the commit and tells the agent what to do instead. Here is the script, how to verify it, and where it breaks.

Lessons from Airbnb on steering coding agents, reviewing their work, and building feedback loops that make automation useful in a real codebase.

A measured case where a cheaper-looking index sent Postgres into a nested loop. What went wrong in the plan, and which numbers in EXPLAIN show it.

Gemma 4 is not free because Google forgot how to charge. It is free because Google can make money from the cloud, devices, and developer ecosystem around the model.

Coding agents are becoming default stack selectors. The risk is not always a bad pick. It is a reasonable local optimum that quietly becomes production.

Two months of 'Claude Code got worse' turned out to be three harness bugs. The model never drifted.

Why I built this site, and what you'll find here.

Architecture and design choices, warts and all. With a stowaway in the vents.

Small rituals, big return.

Ship the new app without rewriting the old one.

GitHub Actions and GitFlow, wired end-to-end.

Functions, arrays, error handling, cron — moving past the basics.

Starting where every DevOps story starts — the terminal.

A 2023 time capsule from when ChatGPT was ~6 months old.