sutando-migrate

M1 Part 2 workspace migration — guided walkthrough that scans legacy state across sources A (repo-root), B (~/.sutando/workspace/), C ($SUTANDO_WORKSPACE env-override), surfaces collisions, gets owner greenlight, commits, verifies, and (if sutando-plus + sync configured) re-routes the vault .git via sutando-migrate-sync.sh. Wraps scripts/sutando-migrate.sh for agent-invoked use; bash entry path remains available.