Notes on agentic coding, local AI experiments and small browser games.https://captain-arni.org/https://captain-arni.org/blog/threadfall-a-platformer-built-by-agents/https://captain-arni.org/blog/threadfall-a-platformer-built-by-agents/A felt-puppet platformer in three.js, written by Claude Code and checked without anyone playing it by hand: a deterministic simulation, input scripts, a route search and chapter proofs, with every picture, clip and track made on one local GPU.Thu, 22 Oct 2026 18:00:00 GMThttps://captain-arni.org/blog/sharing-one-gpu-between-agents-and-renders/https://captain-arni.org/blog/sharing-one-gpu-between-agents-and-renders/A local coding agent, image and video renders, speech and music, all on one RTX 5090. Claims with sizes, a lent engine slot, a park that hands the engine back exactly as it was, and why a memory reading taken afterwards is the wrong size.Thu, 22 Oct 2026 10:00:00 GMThttps://captain-arni.org/blog/flux-3-klein-int8-vs-bf16/https://captain-arni.org/blog/flux-3-klein-int8-vs-bf16/Same prompts, same seeds, int8 against bf16. Tap any picture to switch. int8 lost nothing I could see, and it was twice as fast.Thu, 15 Oct 2026 21:00:00 GMThttps://captain-arni.org/blog/ai-hub-gpu-workstation-from-my-phone/https://captain-arni.org/blog/ai-hub-gpu-workstation-from-my-phone/I put my PC to sleep from my phone, leave the house, wake it from anywhere and keep working: coding agents, local LLMs, image and music generation. Here is what my AI Hub does and how the pieces fit together.Fri, 02 Oct 2026 10:00:00 GMThttps://captain-arni.org/blog/self-hosting-behind-cloudflare/https://captain-arni.org/blog/self-hosting-behind-cloudflare/A step-by-step guide to serving a public site and private apps from a Raspberry Pi at home, with a Cloudflare Tunnel instead of port forwarding and Cloudflare Access instead of your own login page, plus the gotchas that cost me the most time.Fri, 02 Oct 2026 09:00:00 GMThttps://captain-arni.org/blog/moonlight-wifi-rekey-stutter/https://captain-arni.org/blog/moonlight-wifi-rekey-stutter/Moonlight froze for a second or two at random. It wasn't random: it landed every 600 seconds, on the Wi-Fi group key renewal, because of how the Raspberry Pi's radio installs keys.Fri, 02 Oct 2026 08:00:00 GMThttps://captain-arni.org/blog/agentic-coding-primer/https://captain-arni.org/blog/agentic-coding-primer/How to get great results from an AI coding agent by treating it like the powerful tool it is, not a magic box you throw wishes at.Fri, 02 Oct 2026 07:00:00 GMT