Refine Critique Loop

Workflow

1. Read the existing artifact and identify the user's refinement goal.
2. Run a structured critique for hierarchy, fit, accessibility, responsiveness, and artifact-specific quality.
3. Apply the smallest useful patch.
4. Re-run critique and stop when quality converges or the iteration limit is reached.
5. Return a diff summary and what changed.

Output Contract

Patch the existing artifact and produce refine-summary.md.