Nested AGENTS.md

Set nested_agents_enabled = true in the project render configuration. A memory with a directory scope and scope_path such as src/package may use the nested_agents render target. Include nested output explicitly when exporting:

memoryledger export --include-nested

Paths are confined to the project root and cannot escape through .. or an absolute path. This is useful for package-specific instructions while keeping the root file concise. Nested output is disabled by default.