iter(g204): textarea 支持内容自适应高度

.ua/index.json

@@ -1,6 +1,6 @@
 {
   "$schema": "ui-arch-registry-index/0.1",
-  "generatedAt": "2026-10-26T09:56:49.160Z",
+  "generatedAt": "2026-10-26T11:13:22.375Z",
   "repoRoot": ".",
   "packages": [
     {
@@ -535,6 +535,11 @@
                 "n": "maxCount",
                 "t": "number",
                 "d": "字数上限：同时设原生 maxlength，并在下方附加块显示实时计数；缺省不限"
+              },
+              {
+                "n": "autosize",
+                "t": "boolean | { minRows?, maxRows? }",
+                "d": "自适应内容高度：true 跟随内容涨落，对象态钳最小/最大行数，超出 maxRows 内部滚动；缺省固定行数"
               }
             ],
             "example": "const bio = signal(''); textarea({ value: bio, rows: 4, placeholder: '一句话介绍…' })",