Agent CLI Assembly Architecture

This file is retained as a stable pointer for older references.

The current package architecture map entrypoint is ARCHITECTURE-MAP.md. That document is source-verified against current CLI composition and routes to package diagrams, execution flows, command layering, provider/model state flow, and layer audit findings in the repository architecture-map tree.

Do not add new architecture details here. Update ARCHITECTURE-MAP.md and the owning package SPEC.md instead.