Give me a design QA checklist for a feature before it ships.
FEATURE: [[FEATURE]]
PLATFORM: [[PLATFORM]]
Produce a checklist covering:
1. Visual fidelity vs design (spacing, type, color, alignment)
2. All states (empty, loading, error, success, disabled)
3. Responsive behavior across sizes
4. Interaction & animation correctness
5. Accessibility (contrast, focus, labels, touch targets, keyboard)
6. Edge cases (long text, no data, slow network, RTL)
7. Cross-browser/device spot checks
Tailor it to this feature. Flag the items most often missed.