A hands-on walkthrough of script injection in GitHub Actions: building a vulnerable workflow, setting up a listener server, exfiltrating a real secret, and finally fixing it.

Defining nodes in web3, the types you run into, and a debugging story where a stale REST endpoint silently broke our resolver.

A persisted console-toggle pattern for gating work-in-progress UI behind a flag that devs and designers can flip from DevTools without a deploy.

The history of money, reframed as a series of engineering problems — discovery, standardization, attestation, indirection, consensus.

Install Postgres, connect to it, create a database, run queries, and understand the bits you actually use day-to-day.