chore(backlog): 记录 g206 完成

.ua/backlog.json

@@ -2240,6 +2240,15 @@
       "domain": "tune",
       "status": "done",
       "notes": "落地：el.type 原生打点，显隐按钮复用 ua-input-clear 样式零新增 CSS，文案即状态（按钮永远写下一步动作），aria-label 同步；与 clearable/字数统计共用后置附加组不互斥。"
+    },
+    {
+      "id": "g206",
+      "title": "rate 支持 allowClear 清除评分",
+      "motivation": "评错了想撤销只能逐星点回 1 星，无法清零；主流组件库 rate 均有 allowClear。",
+      "acceptance": "1) RateProps 新增 allowClear?: boolean，再次点击当前分值（含半星精确相等）清零，键盘路径不受影响；2) aria-valuemin 随 allowClear 变 0/1；3) manifest props 表补行并 npm run docs 同步；4) npm run check 全绿。",
+      "domain": "tune",
+      "status": "done",
+      "notes": "落地：emit 加 allowZero 放行口，点击命中值与当前值精确相等即清零；aria-valuemin 随 allowClear 0/1 切换，读屏语义一致。"
     }
   ]
 }

.ua/iterations.log

@@ -250,3 +250,4 @@
 {"ts":"2026-10-26T19:11:13+08:00","id":"g203","result":"done","commit":"df51478","summary":"文档站页头主题切换（亮/暗/跟随系统，localStorage 持久），demo 读 ?theme= 参数，iframe 带参重载联动暗色"}
 {"ts":"2026-10-26T19:13:53+08:00","id":"g204","result":"done","commit":"5bc854b","summary":"textarea 新增 autosize：布尔/对象（minRows/maxRows）双态，输入与信号写回都重算高度，行高从 computed style 推导零硬编码"}
 {"ts":"2026-10-26T19:15:31+08:00","id":"g205","result":"done","commit":"6ee86ac","summary":"textField 新增 password：原生打点 + 内置显示/隐藏切换按钮（复用 clear 样式），与 clearable/计数不互斥"}
+{"ts":"2026-10-26T19:16:49+08:00","id":"g206","result":"done","commit":"f763f63","summary":"rate 新增 allowClear：再点当前分（半星须精确相等）清零，aria-valuemin 同步 0/1"}