Build notes · real systems
Write-ups from systems I actually operate: a Telegram agent that has lived in the same group chats since 2015, an operations dashboard for robot mower fleets, and a 3D game built in 13 days with coding agents. Real constraints, honest numbers, and the odd WebGL scene you can poke at.
Ten years of the same bot: how a currency-command script grew a routing-only webhook, FIFO queues, idempotent workers, a fail-closed authorization gate and reply gating — without ever leaving its group chats.
A machine knight with a sword, a gun and a chargeable laser — 6th in Gameplay of 495 jam entries. Build log, honest scores and live WebGL scenes from the actual game, embedded in the post.
The dashboard that answers "did the robots actually mow my lawn?" — a Next.js app and serverless AWS pipeline turning Husqvarna telemetry into coverage, utilization, errors and reports.