feat(canvas): 动效系统与响应式适配 - token落地+断点体系+无障碍 #99
基于 Wayfinder #99 决议,完成动效/响应式/无障碍三大维度落地: 1. 动效 token 迁移(CSS 动画) - 33 处 easing 替换为 var(--motion-ease-out/in-out/linear) - 7 处有限动画 duration 替换为 var(--motion-dur-*-calc) (含 motion-scale 降级,自动联动 prefers-reduced-motion) - canvas-node batch 动画内联值替换为 token 2. aceternityMotion 对齐 + motion/react 硬编码替换 - 添加 JS↔CSS token 映射文档注释 - 3 处 motion/react 硬编码 duration 替换为 aceternityMotion.* 引用 3. infinite 装饰动画 reduced-motion 降级 - L1 (prefers-reduced-motion): 缩短至 0.01ms + 单次播放 - L2 (.no-motion): animation: none 完全禁用 - 覆盖 9 个 infinite 动画类(连线流光/边框流光/极光标题等) 4. 响应式断点体系 - @theme 新增 3 断点 token: --breakpoint-tablet(768)/desktop(1024)/wide(1440) - 修复 canvas-toolbar 外观面板缺 max-w 导致移动端溢出 5. 无障碍 - 画布页新增 skip-to-content 链接(键盘用户跳过侧栏直达画布) - 任务进度面板 aria-live="polite"(屏幕阅读器播报任务数变化) Closes #99
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@@ -202,7 +202,7 @@ function EmotionHeadPreview({ preset }: { preset: CanvasEmotionPreset }) {
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</Canvas>
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<div className="pointer-events-none absolute inset-x-0 bottom-0 h-10 bg-gradient-to-t from-black/55 to-transparent" />
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<AnimatePresence mode="wait" initial={false}>
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<motion.span key={preset.id} initial={{ opacity: 0, filter: "blur(6px)" }} animate={{ opacity: 1, filter: "blur(0px)" }} exit={{ opacity: 0, filter: "blur(5px)" }} transition={{ duration: 0.2 }} className="pointer-events-none absolute bottom-2 left-2.5 text-[var(--fs-tiny)] font-medium text-white/72">实时预览 · {preset.label}</motion.span>
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<motion.span key={preset.id} initial={{ opacity: 0, filter: "blur(6px)" }} animate={{ opacity: 1, filter: "blur(0px)" }} exit={{ opacity: 0, filter: "blur(5px)" }} transition={{ duration: aceternityMotion.duration.state }} className="pointer-events-none absolute bottom-2 left-2.5 text-[var(--fs-tiny)] font-medium text-white/72">实时预览 · {preset.label}</motion.span>
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</AnimatePresence>
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</div>
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);
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