fix: Kopieren auf HTTP nutzt execCommand-Fallback (clipboard API braucht HTTPS)

frontend/src/components/ScriptModal.jsx

@@ -1,6 +1,7 @@
 import { useState, useRef, useEffect } from 'react'
 import { X, Play, Loader, Terminal, Copy, Check } from 'lucide-react'
 import api from '../api/client'
+import { copyToClipboard } from '../utils/clipboard'
 
 export default function ScriptModal({ agentId, agentName, onClose }) {
   const [script, setScript] = useState('#!/bin/bash\n\n')
@@ -35,7 +36,7 @@ export default function ScriptModal({ agentId, agentName, onClose }) {
 
   const copyOutput = () => {
     if (output) {
-      navigator.clipboard.writeText(output)
+      copyToClipboard(output)
       setCopied(true)
       setTimeout(() => setCopied(false), 2000)
     }

frontend/src/pages/Customers.jsx

@@ -1,5 +1,6 @@
 import { useEffect, useState } from 'react'
 import api from '../api/client'
+import { copyToClipboard } from '../utils/clipboard'
 import { Plus, Trash2, Edit2, X, Check, ChevronDown, ChevronRight, Copy, Key } from 'lucide-react'
 
 const PERM_LABELS = {
@@ -204,11 +205,7 @@ function CustomerKeyPanel({ customerId }) {
   }, [customerId])
 
   const copyKey = (key, id) => {
-    navigator.clipboard.writeText(key).catch(() => {
-      const el = document.createElement('textarea')
-      el.value = key; document.body.appendChild(el); el.select()
-      document.execCommand('copy'); document.body.removeChild(el)
-    })
+    copyToClipboard(key)
     setCopied(id)
     setTimeout(() => setCopied(null), 2000)
   }