feat(Paper): add borderRadius prop

[pltimme]

Summary

Adds a borderRadius prop to the Paper component so consumers can use Picasso's design-system border-radius scale without resorting to inline style overrides.

• Accepts 'none' | 'sm' | 'md' | 'full' — maps to Tailwind classes rounded-none, rounded-sm (4px), rounded-md (8px), rounded-full
• Defaults to undefined (no border radius applied — fully backward compatible)
• Exports PaperBorderRadius type

Motivation

Without this prop, consumers who need rounded Paper surfaces (e.g. stat/metric cards) fall back to style={{ borderRadius: Npx }} with arbitrary pixel values outside the design system's scale. This was observed in downstream tooling where a style={{ borderRadius: 6 }} workaround was documented as a convention — a signal that the prop belongs in the component itself.

Usage

// Rounded stat card
<Paper borderRadius="sm">
  <Container padded={SPACING_6}>
    <Typography variant="heading" size="xlarge">{value}</Typography>
  </Container>
</Paper>

Test plan

• Existing snapshot test passes unchanged (no default border radius added)
• New parameterised tests verify each borderRadius value applies the correct Tailwind class
• New test verifies no radius class is present when prop is omitted

[changeset-bot]

🦋 Changeset detected

Latest commit: 879f1be

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 41 packages

Name	Type
@toptal/picasso-paper	Minor
@toptal/picasso	Minor
@topkit/analytics-charts	Patch
@toptal/picasso-drawer	Patch
@toptal/picasso-dropdown	Patch
@toptal/picasso-menu	Patch
@toptal/picasso-modal	Patch
@toptal/picasso-button	Patch
@toptal/picasso-page	Patch
@toptal/picasso-account-select	Patch
@toptal/picasso-autocomplete	Patch
@toptal/picasso-select	Patch
@toptal/picasso-rich-text-editor	Patch
@toptal/picasso-prompt-modal	Patch
@toptal/picasso-forms	Patch
@toptal/picasso-query-builder	Patch
@toptal/picasso-accordion	Patch
@toptal/picasso-alert	Patch
@toptal/picasso-application-update-notification	Patch
@toptal/picasso-calendar	Patch
@toptal/picasso-carousel	Patch
@toptal/picasso-file-input	Patch
@toptal/picasso-helpbox	Patch
@toptal/picasso-notification	Patch
@toptal/picasso-outlined-input	Patch
@toptal/picasso-pagination	Patch
@toptal/picasso-password-input	Patch
@toptal/picasso-section	Patch
@toptal/picasso-show-more	Patch
@toptal/picasso-skeleton-loader	Patch
@toptal/picasso-table	Patch
@toptal/picasso-tree-view	Patch
@toptal/picasso-tagselector	Patch
@toptal/picasso-date-select	Patch
@toptal/picasso-form	Patch
@toptal/picasso-date-picker	Patch
@toptal/picasso-dropzone	Patch
@toptal/picasso-avatar-upload	Patch
@toptal/picasso-input	Patch
@toptal/picasso-number-input	Patch
@toptal/picasso-timepicker	Patch

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Generated by 🚫 dangerJS against 879f1be

[pltimme]

Dropping this — the right fix is to use the existing Tailwind class directly via className on Paper. No new prop needed.

[github-actions]

🗑️ Storybook preview cleaned up

The preview deployment has been automatically removed since this PR was closed.