So, I’ve just released the second beta of my Millénaire Magics modpack for Minecraft 1.21.1. This is by far the most hours I’ve put into a personal project, what with the multiple custom…

Abstract. I document my home office setup — the physical workstations, networking gear, and creative tools I rely on every day to build, test, and deploy software as a solo developer. Each piece of ha

When you build your own programming language from scratch, your test suite is your mirror. Everything works in isolated unit tests until you write a classic...

当你从零开始构建自己的编程语言时，测试套件就是你的镜子。在编写像计算第 10 个斐波那契数这样的经典基准测试之前，一切在独立的单元测试中似乎都能正常运行——然后解释器要么立刻崩溃，要么输出一个错得理直气壮的结果。

Of all the fun things I have built with AI this year, the ones I use the most are Muv(.ing) and Stooges(.dev). Muv lets you know if you are actually moving today (having real activity). No need to…

An LLM that writes code is only useful if it can run the code. Until it runs, everything the model produced is a guess with good syntax highlighting. The usual way to close that gap is to give the…

A few days ago, I was poking around AWS Organizations and came across backup policies. I’ve written plenty of backup plans and schedules over the years, but I didn’t realize I could roll them out…

To be fair, it’s more accurate to say that I wrote a data compiler. Let me explain myself after that unsettlingly clickbaity title… I’m currently contracted on a project that…

A practical guide to fixing Kiro IDE's agent shell execution in WSL2 — adding Linux terminal profiles, shell integration scripts, and steering context for reliable AI agent interactions on Ubuntu…

Saving game data is easy. Making your save code survive every kind of hardware failure is not. A lot of these issues will never show up during testing, but if your game reaches a wide audience with…

As people grow older, they grow wiser, or at least they think they do. Then it becomes their duty to impart their accumulated wisdom to the younger generation. Leslie Lamport made his name in…

Plotting started in October 2025 and came with quite some hiccups and challenges along the way. But now it's almost here... Just a few more days. I promise. #madewithrstr

Build single file executables in Gleam, bundled and run with Bun

How I built PadelIQ, an iOS app that turns phone-against-the-glass padel footage into positioning heatmaps and coaching verdicts — with the whole computer vision pipeline running on-device via Core…

Part 4 --> This post was written for Blaugust 2026 Some misc tips and tricks, plus some things I found annoying while experimenting with this that didn’t really fit into the previous blog posts.…

I shipped a Ruby gem with parallel agents and a 37-agent review. The speed was the least interesting part. The verification fan-out caught six silent security holes.

Go to: https://kobolt.github.io/article-283.html

A short write-up about Atlas at War, a turn-based conquest game where the board is not drawn by hand but built from real country borders returned by the MapJSON API.

This week I took time to re-read The Programmer’s Brain by Felienne Hermans. Among the many gems one idea that stuck with me is that not learning how to do something and looking it up every…

Prompted (😉) by some AI dread, I decided to go back to some basics and re-read The Programmer’s Brain by Felienne Hermans. Felienne Hermans’ work caught my attention when she gave a…

I have an Elm app at work that needs exactly one thing from the JavaScript ecosystem: an npm package to piggyback on some A$ure auth thing. And for that one(!) package, I was running Vite with an Elm…

Niram turns a shadcn/ui preset into native Figma variables, styles, components, and app blocks without the usual manual setup.

I read Peter Bloem's post about the ten rules for keeping your critical thinking while using AI to code. I don't follow all of them but it's a great list to keep in mind so you don't forget how to…

Have you ever wondered what a programming language actually is ? People often say that a programming language is just a tool we use to tell computers what to do. I really don't like this metaphor.…

A field guide to building a software factory that still has an owner.

Wenn ich mit anderen Entwicklern darüber spreche, wie ich KI in meiner täglichen Arbeit einsetze, merke ich schnell, dass ich vermutlich zu den eher konservativeren Nutzern gehöre. Nicht, weil ich…

Cashflow 101 is the board game that sold a generation of people on the idea that the janitor retires before the doctor. Robert Kiyosaki’s Rich Dad Poor Dad lesson, turned into cardboard: buy assets,…

I see value shifting from maintaining Postman collections to letting agents derive API calls from intent, contracts, and live responses.

Ollama queued every request in a single slot because lfm2 is blocklisted from parallelism. llama-server fixed it.

Intro In my homelab, most of the infrastructure is already redundant enough to tolerate maintenance, but the update process itself was still too manual. Proxmox was the first part I automated in that…

I would be very grateful for pointers to other recent empirical studies of the impact of AI on programming education that are more rigorous than the gushing slop being tossed around on LinkedIn. I’d…

Some tools begin with a roadmap. Others begin with a question asked often enough that irritation wins. At my desk, two questions kept coming back: What is making that sound? What exactly is connected…

The scariest bug in a backtest (the thing that estimates a strategy's returns on past price moves) isn't a crash. It's accidentally using tomorrow's price. It's called lookahead bias, and if you let…

One week since the last changelog. I am going to enjoy that sentence before the streak becomes statistically meaningful. Last week was about getting agents into real machines. This week was about…

An AI coding agent turned a 10,500-line SwiftUI app into a fully native Android app — same backend, same UX, Material Design throughout. Here is what the port decided, what it deliberately did not…

tl;dr: It worked! From one prompt it created a repo, wrote the application and tests, got CI green, provisioned Postgres and deployed the finished app behind HTTPS without another message from me.If…

During a recent trip I worked on a Gameboy emulator using my 14 year old Asus Zenbok UX31A, using a limited set of tools and my experience from earlier emulator developments. Read the full journal…

Rust Glancer, a functional LSP server for Rust which uses two orders of magnitude less RAM, is incredibly cool. Go check it out! This post started as a comment on lobste.rs, but I figured it out that…

Chris kicked off a little 'blog and response' with Thinking Horizontally in CSS @layer . The idea was that if every component's custom properties live in a weak layer, unlayered CSS can override them…

There is a neat paper https://arxiv.org/abs/math/9405205 Seven Trees in One, where it is shown that there is a nice isomorphism between 7 trees and one tree.

How subdomain recon, WordPress user enumeration, and a brute force led to admin access and remotely unlocking scooters.

Tech debt has rules. You cut a corner to ship on time, you write a comment that says TODO fix this, and six months later someone pays it down. It is annoying but it is bounded. A senior engineer can…

In my last post I described how we structure delivery so that human judgement is spent where it matters, and I left one problem open: that model assumes seasoned judgement at the gates, and I could…

I have been building as a small but serious experiment: a private, play-money prediction-market platform where communities create Tribes, open markets, stake internal credits, and resolve outcomes.…

An autonomous Qwen3.8 red-team agent, 600+ calls, 13.5M prompt tokens, and two emoji: how OpenCode's secret model led me straight to Z.ai's GLM-5 generation.

Enums exist. They’re not evil. But if you’ve written a TypeScript enum, you’ve already lost the argument. Take a look a the following example:

How I generate PAC Hub training videos with Playwright and Grok TTS, and why keeping them current costs pennies.

The first is architecture , decided partly up front: network topology, the protocol between processors, how function is partitioned across boards, real-time constraints, the data model, how firmware…

How to get syntax highlighting for MDX files working in Neovim using NixVim.