Notas de trabajo sobre diseño, código y criterio.
Lo que aprendo entregando interfaces reales: arquitectura frontend, rendimiento, sistemas de diseño y trabajar con IA sin perder el hilo.
Frontend y rendimiento
Core Web Vitals, renderizado y el coste real de lo que construimos.
1 ARTÍCULOSistemas de diseño e IA
Tokens, componentes, y dónde ayuda la IA — y dónde no.
3 ARTÍCULOSProducto y oficio
Herramientas, UX writing y los detalles que deciden la calidad.
2 ARTÍCULOSClaude broke the rules I wrote for it. The risk was all mine.
An agent follows the rules it can execute, not the rules it can read. What it cost to learn that — 1,845 records withdrawn — and the gatekeeper we built so it can't happen again.

Why I no longer use Figma
How I went from designing screens to writing prompts, and why a pencil and paper give me more than any design tool.
saastro-relay: persistent memory for working with AI on real projects
Every AI session starts from zero. saastro-relay is the MCP server I built to fix that: it syncs context and code snapshots between Claude.ai and Claude Code with a dual local + cloud architecture.
Design systems with AI: what changes and what doesn't
AI speeds up interface generation, but a design system still needs human judgement. How I integrate AI tools into my workflow without losing coherence.
UX writing: words are interface
Copy is not decoration added at the end. It's a design decision with the same weight as spacing, color, or hierarchy.
Web performance: Core Vitals without the pain
LCP, CLS, INP — the metrics Google measures that directly affect your business. How I hit good scores without sacrificing design.