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Closes FE-4093 ## Problem The shared `InfoTooltip` trigger's only child is an SVG and it has no accessible name, so a screen reader announces an unnamed button and the information the tooltip carries is unreachable. `button-name`, critical. `/pricing` renders 34 of them. ## Solution * Add an optional `label` prop rendered as `sr-only` text, with a generic fallback so the 22 call sites that pass nothing still get a name. The prop is optional because 26 files import this component across www, Studio, design-system and ui-patterns. * Drop the redundant `role="button"` from a native button. * Label the four www call sites. A shared fallback alone would leave `/pricing` announcing 34 identical names, which passes axe and stays unusable. The labels come from the feature title and plan already in scope, so no pricing data changes. Docs is unaffected. It has its own `InfoTooltip` at `apps/docs/features/ui/InfoTooltip.tsx` and never imports the shared one. ## Manual testing 1. Open [/pricing](https://zone-www-dot-com-git-ui-patterns-infotooltip-ac-07e2ab-supabase.vercel.app/pricing) using a Screenreader. 2. Tab through the comparison table. Each info tooltip announces its own feature, for example "About Database size". 3. Tab to a plan-specific tooltip. It announces the feature and the plan, for example "About Automatic backups on the pro plan". 4. Confirm the icons render unchanged and the tooltips still open on hover and on focus. 5. Run axe on the page. `button-name` reports zero elements. 6. Open the [design system InfoTooltip page](https://design-system-git-ui-patterns-infotooltip-acces-66ec02-supabase.vercel.app/design-system/docs/fragments/info-tooltip) and confirm the demo still renders. <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Accessibility Improvements** * Added descriptive labels to pricing information tooltips. * Improved screen reader context for compute estimates, features, and plan-specific pricing. * Added a default “More information” label for unlabeled tooltips. <!-- end of auto-generated comment: release notes by coderabbit.ai --> Co-authored-by: Claude Opus 5 <noreply@anthropic.com>