Export prop types consistently across components (<Name>Props) #877

Summary

Roughly half of sampled components don't export their prop type, so consumers can't import and extend it (e.g. to build a typed wrapper). Coverage is inconsistent even among the most-used components.

Current state

Exported: SwitchProps (switch.tsx:19), AccordionRootProps (accordion-root.tsx:27), DialogContentProps (dialog-content.tsx:8), FieldProps (field-root.tsx:9), FieldsetProps (fieldset.tsx:5), IconButtonProps (icon-button.tsx:20), SelectTriggerProps (select-trigger.tsx:36).

Not exported: ButtonProps (button.tsx:127, plain type, no export), CheckboxGroupProps/CheckboxItemProps (checkbox.tsx:61,88, plain interface), TabsRootProps/TabsTabProps (tabs.tsx:25,55).

Native-attribute extension itself is consistent (125 ComponentProps<...> usages across 74 files) — this is purely about the export keyword being missing on the type/interface declaration.

Suggested approach

• Add export to every <ComponentName>Props type/interface, starting with Button, Checkbox, and Tabs since they're the highest-traffic components.
• Consider a lint rule (or a codemod + CI check) that flags a component file whose prop type isn't exported, so this doesn't regress on new components.

Notes

Found via a components.build practices audit (types dimension).