fix(Dialog): address responsive review feedback

[rubyycheung]

Draft follow-up to #5352 after Cindy merged it without these review nits applied.

Addresses Cindy's inline review discussions:

• fix(Dialog): improve responsive presentation behavior #5352 (comment) — fullscreen safe-area inline padding now maps physical left/right env() insets to logical start/end for LTR and RTL.
• fix(Dialog): improve responsive presentation behavior #5352 (comment) — default fullscreen safe-area protection now lives in the default padding fallback, so explicit theme padding (including dialog: {padding: 0}) takes precedence.
• fix(Dialog): improve responsive presentation behavior #5352 (comment) — fullscreen motion coverage now verifies opacity-only fullscreen keyframes and directional transform on standard keyframes.
• fix(Dialog): improve responsive presentation behavior #5352 (comment) — changeset credit corrected from @rubycheung to @rubyycheung.

Validation:

• Astryx bootstrap: help, docs, docs principles --dense, docs tokens --dense, docs theme --dense, component --list, template --list, component Dialog --dense
• pnpm vitest run packages/core/src/Dialog/Dialog.test.tsx packages/core/src/Dialog/DialogHeader.test.tsx packages/core/src/AlertDialog/AlertDialog.test.tsx
• pnpm -F @astryxdesign/core typecheck
• pnpm -F @astryxdesign/core typecheck:docs
• pnpm -F @astryxdesign/core build
• pnpm -F @astryxdesign/docsite generate && pnpm -F @astryxdesign/docsite typecheck after building theme packages used by docsite
• pnpm exec prettier --check packages/core/src/Dialog/Dialog.tsx packages/core/src/Dialog/Dialog.test.tsx .changeset/dialog-responsive-interaction.md
• pnpm exec eslint packages/core/src/Dialog/Dialog.tsx packages/core/src/Dialog/Dialog.test.tsx
• pnpm check:repo

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Project	Deployment	Actions	Updated (UTC)
astryx	Ready	Preview	Aug 23, 2026 9:12pm

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Modified Components

Dialog _{(@astryxdesign/core)} · View in Storybook

Metric	Before	After	Delta
Bundle Size (ESM)	N/A	N/A	N/A
Lines of Code	N/A	688	-
Complexity	N/A	Very High (81)	-

Bundle Size Summary

Package	Size (ESM)	Size (CJS)	Gzipped
@astryxdesign/core	N/A	4.8KB	1.2KB

Accessibility Audit

Status: No accessibility violations detected.

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