Design-Patterns

Agents accumulate autonomous behaviors over time - ‘always do X before Y’, ‘if you see Z then do W’. These instructions eat context budget, drift across invocations, and can’t be observed or tested. How to recognize when an autonomous behavior is a skill waiting to be extracted, and the layered model that makes the boundary clear.

You write a struct with a Write method. Three months later, you discover it implements io.Writer. You never declared this. How did it happen? Exploring Go’s implicit interfaces and the power of accidental implementation.