Curbcut: Accessibility Fixes

Overlay widgets add a menu on top of your storefront while your theme's code stays unchanged. Curbcut works on the code itself: it audits every Liquid file in your published theme against WCAG 2.1/2.2 AA and writes a minimal fix in your theme's own objects and variables. Every fix is shown as before/after code with a plain-language explanation, validated before it's offered, and applied only after a backup of the live file. Rescans check only what changed and build a dated remediation history.