添加了子用户列表功能

frontend/src/utils/clipboard.ts

@@ -0,0 +1,44 @@
+export async function copyToClipboard(text: string): Promise<boolean> {
+  if (!text) return false
+
+  if (navigator.clipboard?.writeText) {
+    try {
+      await navigator.clipboard.writeText(text)
+      return true
+    } catch {
+      // Fall through for non-secure HTTP origins where Clipboard API is blocked.
+    }
+  }
+
+  const textarea = document.createElement('textarea')
+  textarea.value = text
+  textarea.setAttribute('readonly', '')
+  textarea.style.position = 'fixed'
+  textarea.style.top = '0'
+  textarea.style.left = '0'
+  textarea.style.width = '1px'
+  textarea.style.height = '1px'
+  textarea.style.opacity = '0'
+  textarea.style.pointerEvents = 'none'
+
+  const selection = document.getSelection()
+  const selectedRange = selection?.rangeCount ? selection.getRangeAt(0) : null
+
+  document.body.appendChild(textarea)
+  textarea.focus({ preventScroll: true })
+  textarea.select()
+  textarea.setSelectionRange(0, textarea.value.length)
+
+  let copied = false
+  try {
+    copied = document.execCommand('copy')
+  } finally {
+    document.body.removeChild(textarea)
+    if (selection && selectedRange) {
+      selection.removeAllRanges()
+      selection.addRange(selectedRange)
+    }
+  }
+
+  return copied
+}