style(layer-dialog): refine dialog surfaces

[hkfoster]

Summary

• rely on the scroll mask instead of a conditional title divider
• refine dialog spacing, typography, close-button sizing, and surface radii
• soften the dismiss-button hover treatment and emphasize destructive confirmation copy

Follow-up to #793.

Validation

• pnpm --filter @cloudflare/kumo build

• pnpm --filter @cloudflare/kumo typecheck

• pnpm --filter @cloudflare/kumo exec vp test run --project=unit src/components/layer-dialog/layer-dialog.test.tsx

• pnpm --filter @cloudflare/kumo-docs-astro typecheck

• pnpm --filter @cloudflare/kumo lint

• Reviews

• bonk has reviewed the change

• automated review not possible because: final visual judgment requires human design review

• Tests

• Tests included/updated

• Automated tests not possible - manual testing has been completed as follows: reviewed all LayerDialog demos locally

• Additional testing not necessary because: behavior is unchanged and existing LayerDialog tests pass

[pkg-pr-new]

npm i https://pkg.pr.new/@cloudflare/kumo@796

commit: 4e84ab4

[github-actions]

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Commit: 4e84ab4

[github-actions]

Visual Regression Report — 17 changed, 28 unchanged

17 screenshot(s) with visual changes:

Button / Loading State

36 px (0.04%) changed

Before	After	Diff

Dialog / Dialog Basic

316 px (0.36%) changed

Before	After	Diff

Dialog / Dialog Confirmation

1,228 px (1.39%) changed

Before	After	Diff

Dialog / Custom Max Width

951 px (1.07%) changed

Before	After	Diff

Dialog (Open)

0 px (0%) changed

Before	After	Diff

Select / Select Basic

914 px (1.03%) changed

Before	After	Diff

Select / Select Sizes

2,926 px (1.8%) changed

Before	After	Diff

Select / Select Dynamic Placement

3,376 px (3.24%) changed

Before	After	Diff

Select / Select Without Label

758 px (0.86%) changed

Before	After	Diff

Select / Select With Description

2,199 px (2.11%) changed

Before	After	Diff

Select / Select With Tooltip

1,022 px (1.15%) changed

Before	After	Diff

Select / Select Loading

2,110 px (1.2%) changed

Before	After	Diff

Select / Select Complex

1,796 px (1.73%) changed

Before	After	Diff

Select / Select Disabled Options

1,217 px (1.37%) changed

Before	After	Diff

Select / Select Grouped With Disabled

1,478 px (1.67%) changed

Before	After	Diff

Select / Select Long List

2,023 px (1.94%) changed

Before	After	Diff

Select (Open)

1,183 px (0%) changed

Before	After	Diff

28 screenshot(s) unchanged

• Button / Basic
• Button / Variant: Primary
• Button / Variant: Secondary
• Button / Variant: Ghost
• Button / Variant: Destructive
• Button / Variant: Outline
• Button / Variant: Secondary Destructive
• Button / Sizes
• Button / With Icon
• Button / Icon Only
• Button / Disabled State
• Button / Title
• Button / Link as Button
• Button / Link with Tooltip
• Button / Disabled Link
• Dialog / Dialog With Actions
• Dialog / Dialog Sizes
• Dialog / Dialog Alert
• Dialog / Dialog With Select
• Dialog / Dialog With Combobox
• Dialog / Dialog With Dropdown
• Select / Select Placement
• Select / Select With Error
• Select / Select Placeholder
• Select / Select Custom Rendering
• Select / Select Multiple
• Select / Select Disabled Items
• Select / Select Grouped

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Generated by Kumo Visual Regression

[github-actions]

📐 Bundle Size

Consumer fixtures bundled against packages/kumo/dist (peers external, minified ESM).

Fixture	Raw	Gzip	Brotli
Button (root)	174.6 KB	49.9 KB	43.1 KB
Button (components/button)	174.5 KB	49.9 KB	43.0 KB
Button + Dialog + Select (root)	299.5 KB	85.8 KB	71.8 KB
Button + Dialog + Select (component subpaths)	299.5 KB	85.9 KB	71.8 KB
Chart (root)	218.6 KB	63.4 KB	54.7 KB
Chart (components/chart)	218.5 KB	63.3 KB	54.7 KB
Badge (components/badge)	44.7 KB	11.7 KB	10.0 KB
Flow (components/flow)	208.9 KB	58.3 KB	50.5 KB
Button (primitives/button)	12.2 KB	4.4 KB	3.9 KB
Primitives barrel	635.8 KB	176.9 KB	139.3 KB
Code highlighting (code)	2.08 MB	467.9 KB	349.2 KB

npm tarball: 535 files, 1.47 MB packed, 6.84 MB unpacked.

⚠️ 22 flagged files in tarball (tests / raw scripts)

• dist/blocks-source/resource-list/resource-list.test.tsx
• scripts/component-registry/cache.ts
• scripts/component-registry/discovery.ts
• scripts/component-registry/example-cleanup.ts
• scripts/component-registry/index.test.ts
• scripts/component-registry/index.ts
• scripts/component-registry/markdown-generator.ts
• scripts/component-registry/metadata.ts
• scripts/component-registry/props-filter.ts
• scripts/component-registry/schema-generator.ts
• scripts/component-registry/sub-components.ts
• scripts/component-registry/types.ts
• scripts/component-registry/utils.ts
• scripts/component-registry/variant-parser.ts
• scripts/css-build.ts
• scripts/generate-primitives.ts
• scripts/theme-generator/config.ts
• scripts/theme-generator/generate-css.test.ts
• scripts/theme-generator/generate-css.ts
• scripts/theme-generator/index.ts
• scripts/theme-generator/migrate.ts
• scripts/theme-generator/types.ts

Report-only: no size thresholds are enforced yet.

Commit: 4e84ab4c