What does cs-refactor-ff do?
An ultra-lightweight refactoring channel for the refactoring workflow — directly identifies 1-3 low-risk optimizations, obtains a single confirmation, applies changes in-place, and runs tests for self-validation. Triggered by user phrases like "quick refactor", "small refactor", "simply optimize function XX", or "fewer steps", when changes are local to a single function/component and have tests to validate.