--- type: Changed pr: 537 --- Migrate 5 modules from hand-written CommonJS to TypeScript source of truth per ADR-457 (#537). Modules migrated: `graphify`, `install-profiles`, `intel`, `installer-migrations`, and `worktree-safety`. Each `src/.cts` compiles to a gitignored `get-shit-done/bin/lib/.cjs` with behaviour preserved byte-for-behaviour; only strict types are added.