# Architecture → moved

This page is now split in two, under [Internals](../internals/index.md):

- **[Code map](../internals/code-map.md)** — directory structure, Effect/Layer conventions, how to add an adapter, testing patterns. (This is where the old content went.)
- **[Design decisions](../internals/design-decisions.md)** — the harness choices and what each one trades away.

Runtime behavior lives in [Agent loop](../internals/agent-loop.md),
[Context management](../internals/context-management.md), and
[Tools & approval](../internals/tools-and-approval.md).