chore(backlog): 记录 g160 完成

.ua/backlog.json

@@ -1636,6 +1636,14 @@
       "acceptance": "multiSelect 新增 maxTagCount：前 N 枚标签照常渲染与删除，其余折成虚线「+N」（title 给全量、点击展开弹层，含 aria-label）；演示页加一枚预置 3 项的折叠实例；manifest props 表与步骤、llms-full 同步；npm run check 全绿。",
       "notes": "",
       "status": "done"
+    },
+    {
+      "id": "g160",
+      "title": "滑块支持双滑块区间",
+      "motivation": "价格 / 数值区间筛选是电商与报表的基本控件，此前只能拼两个单值 slider，视觉上两条独立轨道、还得自己保证下限不超过上限，调用方到处写同样的 clamp。",
+      "acceptance": "slider 新增 range / end / onRangeChange：两条原生 range 叠轨、只有拇指可命中，强调色画出已选段，越界自动压平保证 low ≤ high，右侧显示「低 ~ 高」；单值路径不变；manifest props 表与步骤、llms-full 同步；npm run check 全绿。",
+      "notes": "",
+      "status": "done"
     }
   ]
 }

.ua/iterations.log

@@ -204,3 +204,4 @@
 {"ts":"2026-10-26T15:56:57+08:00","id":"g157","result":"done","commit":"c2412fb","summary":"新增配方 10：暗色主题切换与 color-scheme 同步"}
 {"ts":"2026-10-26T16:00:46+08:00","id":"g158","result":"done","commit":"638f623","summary":"datePicker 新增 presets 快捷区间（days 相对今天 / from-to 绝对日期，min-max 钳制）"}
 {"ts":"2026-10-26T16:02:24+08:00","id":"g159","result":"done","commit":"312e801","summary":"multiSelect 新增 maxTagCount 标签折叠（+N 虚线条目，悬停看全量、点击展开）"}
+{"ts":"2026-10-26T16:03:56+08:00","id":"g160","result":"done","commit":"ef564fc","summary":"slider 新增 range 双滑块（叠轨 + 已选段，越界自动压平）"}