Start with the boundary
The first design question is not which model to use. It is what the system is allowed to know, decide, and do. Clear boundaries make evaluation possible and create a safer path from prototype to operating system.
Context is a product capability
A model does not understand a business because it can retrieve documents. Teams need a living dictionary of terms, workflows, permissions, and exceptions. Context is not a prompt decoration; it is part of the product.
Make the next decision easier
The best AI systems leave people with a clearer next action. They expose assumptions, show their work where it matters, and make it easy to correct the system when reality changes.