chore(backlog): 记录 g52 完成

.ua/backlog.json

@@ -772,6 +772,14 @@
       "acceptance": "新增 backTop（阈值浮现、滚动进度环、平滑回顶且尊重 reduced-motion、支持内滚容器 target）；manifest/docs/demo/README/计数同步；npm run check 全绿",
       "status": "done",
       "notes": "自补：组件补充；进度环用 conic-gradient 内联写角度，不引入新令牌"
+    },
+    {
+      "id": "g52",
+      "title": "新增 colorPicker 颜色选择组件",
+      "motivation": "主题定制、标签配色等场景只能填十六进制文本框；缺省色板应直接消费 --ua-* 令牌，才能天然支持暗色切换",
+      "acceptance": "新增 colorPicker（预设色板 + 原生取色器 + 手输 CSS 颜色串、值信号、Esc 入栈、触发器实时预览）；manifest/docs/demo/README/计数同步；npm run check 全绿",
+      "status": "done",
+      "notes": "自补：组件补充；预设缺省为令牌色而非硬编码 hex"
     }
   ]
 }

.ua/iterations.log

@@ -96,3 +96,4 @@
 {"ts":"2026-10-26T12:12:56+08:00","id":"g49","result":"done","commit":"cb8a9ea","summary":"新增 autoComplete 自动补全：输入即过滤、↑↓ 环形高亮、Enter 选中、Esc 入栈、options 支持函数式远程联想，组件数 47→48"}
 {"ts":"2026-10-26T12:14:00+08:00","id":"g50","result":"done","commit":"e270e09","summary":"新增 datePicker 日期选择：单月网格+翻月/今天+min-max 闭区间+逐日逐周逐月键盘导航，组件数 48→49"}
 {"ts":"2026-10-26T12:15:04+08:00","id":"g51","result":"done","commit":"b93b6dd","summary":"新增 backTop 返回顶部：阈值浮现+conic 进度环+平滑回顶（尊重 reduced-motion）+内滚容器支持，组件数 49→50"}
+{"ts":"2026-10-26T12:16:11+08:00","id":"g52","result":"done","commit":"81ea189","summary":"新增 colorPicker：预设色板（缺省语义令牌色）+原生取色器+手输 CSS 颜色串，组件数 50→51"}