engineering notes
Notes from the build.
// How we build Niiko and this site — the decisions, the trade-offs, and the code that actually shipped. Written when there's something worth writing, not on a content calendar.
2026-07-09The water on this site is a 2D canvas, not WebGLHow the ASCII water simulation behind our hero runs on a plain 2D canvas at a fixed performance budget — and why we never reached for Three.js.→2026-07-09A circuit breaker for AI and messaging spendMulti-tenant products can burn real money fast — LLM calls and WhatsApp messages are metered. How Niiko freezes a runaway tenant without ever mutating a counter.→