refactor: update package name and imports, enhance README for clarity and features

fix(state-layer): replace !important with doubled-class specificity for state-dragged precedence

feat(index): add RTL-ready base defaults with text-align start and language-specific font overrides

feat(utilities): add content-visibility utilities for rendering performance optimization

feat: register state-layer opacity custom properties with @property for smooth transitions

feat(utilities): add scrollbar-thin, scrollbar-hidden, and scrollbar-auto utilities with MD3 colors

feat(base): add production-hardened CSS reset for autofill, spinners, smooth scroll, and media elements

feat(a11y): add prefers-reduced-motion support to disable transitions and animations per WCAG 2.1

fix(index): add 4 missing utility imports and document optional modules for consistent out-of-box experience

feat(elevation): add 5-level glow variant for dark surfaces based on old scss elevation-glow design system

fix(state-layer): replace :focus with :focus-visible per MD3 spec to prevent mouse-click flash

refactor(motion): improve performance - replace transition-property: all with explicit property lists and add semantic utilities

feat(size): add 9-level component size token system based on old scss design system

feat(stroke): add 5-level border-width token system based on old scss design system

feat(spacing): override Tailwind spacing base with MD3 4px grid unit via three-tier config