oc-modularize-ops

Monolith decomposition operator. Decides whether modularization is even the right call (and is willing to say no), captures golden fixtures from REAL data for every boundary as an equivalence oracle, plans the seams + data ownership, and proves zero functionality/data loss by replaying the fixtures. Supports parallel-copy and strangler-fig strategies. Hands the bulk code-move + live cutover to oc-migration-ops…