- Introduce new test suite in internal/recipe/recipe_test.go covering recipe loading, parameter overrides, safety checks, work dir resolution, file discovery, and unified patch creation.
- Remove t.Parallel() from tests in cmd/changelog_test.go, cmd/root_test.go, and cmd/scaffold_test.go that modify global state (e.g., os.Args, HOME, or use os.Chdir()) to avoid race conditions and ensure test isolation.
