jsdom 31 rounds style numbers to 4 decimals; the range
slider test now compares percentages numerically.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzxdWYDm7szKeXoi7rinEy
RangeSlider.astro + <range-slider> replace the React component.
Pure helpers, tokens.css and range-slider.css are unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzxdWYdwRAtMg7ki6TKxuU