arch-compiler

Use when: user wants to select architecture patterns, compile a spec, iterate on constraints/NFRs, audit why patterns were selected/rejected, or finalise an architecture for implementation. Not when: no repeatable decisions needed, or constraints/NFRs are not yet known (gather those first).

Use when: about to write code and docs/architecture/ exists with STATUS: APPROVED in architecture.yaml. Not when: no approved architecture yet (use compiling-architecture first), or architecture.yaml lacks STATUS: APPROVED header.

Use when starting architecture work and you need to decide whether to compile/finalise architecture or implement an already-approved architecture.