Use this skill to statically review TypeScript estate-migration sequencing and reversibility: staged strictness adoption, compiler-major upgrades including the TS 6.0→7.0 tooling split, module-system migration, `skipLibCheck`/suppression debt burn-down, and exposure to removed compiler values. Owns sequencing and portfolio prioritization, not per-file fixes, framework migrations, steady-state policy, or the financial case. Reads configuration and version evidence only.
