iter(g108): 表单补错误汇总条与 onError

.ua/index.json

@@ -1,6 +1,6 @@
 {
   "$schema": "ui-arch-registry-index/0.1",
-  "generatedAt": "2026-10-26T05:59:36.078Z",
+  "generatedAt": "2026-10-26T06:00:53.659Z",
   "repoRoot": ".",
   "packages": [
     {
@@ -1754,6 +1754,17 @@
                 "n": "onReset",
                 "t": "() => void",
                 "d": "重置按钮点击回调；组件不自行清空字段，由调用方重置信号；不传 resetText 不渲染按钮"
+              },
+              {
+                "n": "onError",
+                "t": "(count: number) => void",
+                "k": 1,
+                "d": "校验不通过时的回调，参数为不通字段数（适合埋点或顶部提示）"
+              },
+              {
+                "n": "errorSummary",
+                "t": "boolean",
+                "d": "是否在表单顶部显示「有 N 项需要修改」汇总条；缺省 true，自带错误 UI 时传 false"
               }
             ],
             "example": "const name = signal(''); const f = form({ onSubmit: submit }, [formItem({ label: '用户名', required: true, value: name, rules: [{ min: 2, max: 12 }] }, textField({ value: name }))])",