You've been there. You spend an hour teaching Claude about your project's architecture. You explain the auth flow, the database schema, the weird workaround in the payment module. Everything clicks. Then you close the session.

Next morning, you open a new chat. "Can you help me with the payment module?"

"Sure! Could you tell me about your project structure?"

Gone. All of it. Every architectural decision, every pattern, every "don't touch this file because..." — wiped clean.

This isn't a bug. It's how every AI coding agent works by default. And in 2026, with MCP servers everywhere, we finally have the infrastructure to fix it. But most MCP servers only solve part of the problem.