Produce an implementation-structure plan for the user's question. Durable system decomposition belongs in existing ADRs and architecture MDX. Do not mint a second ADR tree. Do not create a branch. 1. If this turn has no reconciled exploration for the area, follow council steps 1–3, then continue. 2. Read the matching architecture MDX and ADRs. If the change is a durable boundary, stop and document it in the existing ADR/docs system. 3. State implementation goals vs nice-to-haves. Stay inside the existing architecture unless the user already authorized a durable architecture decision. 4. List…