feat(signing): 将签署占位符改为原子节点并支持多选选项组

clinical-web/src/views/workbench/signing/components/SigningDocumentInteractive.vue

@@ -3,6 +3,7 @@ import { computed, onMounted, ref, watch } from 'vue'
 
 import type { SigningAnswers, SigningTaskRecord } from '@/api/workbench/types'
 import {
+  applyAnswerToFieldHost,
   applySignatureToRoot,
   buildSigningDocumentHtml,
   describeFieldProgress,
@@ -143,24 +144,9 @@ function applyStoredValues() {
       return
     }
 
-    if (typeof value === 'boolean') {
-      const checkbox = host.querySelector<HTMLInputElement>('input[type="checkbox"]')
-      if (checkbox) {
-        checkbox.checked = value
-      }
-      return
-    }
-
-    const input = host.querySelector<HTMLInputElement>(
-      'input:not([type="radio"]):not([type="checkbox"])',
-    )
-    if (input) {
-      input.value = value
-    }
-
-    host.querySelectorAll<HTMLInputElement>('input[type="radio"]').forEach((radio) => {
-      radio.checked = radio.value === value
-    })
+    // 读写的判据都在 signing-document 里（readAnswersFromRoot 的镜像），
+    // 这里不自己写 data-sign-* 选择器，否则多选组这类"同 DOM 不同语义"的控件会两处漂移
+    applyAnswerToFieldHost(host, value)
   })
 }