Most People Are Still Writing Prompts. The Real Skill Is Designing Context. Here's the uncomfortable truth about AI agent context: the model is rarely the bottleneck. The context is. I've spent the last six months building what I call the "Rocha Family Home OS" — a platform of 50 autonomous AI agents and 71 reusable skills , all orchestrated by GitHub Copilot . These agents manage everything from family finances and meal planning to content publishing and home maintenance. They run on cron schedules, communicate across sessions, and maintain persistent memory. And the single most important discipline I've developed isn't prompt engineering. It's context engineering — the art and science of designing what each agent sees, remembers, and acts on at every moment.…