show completion in frontend

frontend/src/components/TestCard.jsx

@@ -46,7 +46,7 @@ function formatConfig(config) {
   return formattedEntries.length > 0 ? formattedEntries.join('; ') : '—'
 }
 
-export default function TestCard({ test }) {
+export default function TestCard({ test, isPrevious = false }) {
   const style = STATUS_STYLES[test.status] ?? STATUS_STYLES.pending
   const deviceAccentClass = getDeviceAccentClass(test.device)
   const cardRef = useRef(null)
@@ -90,7 +90,7 @@ export default function TestCard({ test }) {
   return (
     <div ref={cardRef} className="relative">
       <div
-        className={`relative px-1.5 py-0.5 pl-3 rounded border text-xs font-mono truncate cursor-default select-none ${style}`}
+        className={`relative px-1.5 py-0.5 pl-3 rounded border text-xs font-mono truncate cursor-default select-none ${style} ${isPrevious ? 'opacity-60' : ''}`}
         style={{ maxWidth: '100%' }}
       >
         <span className={`absolute inset-y-0 left-0 w-1 rounded-l ${deviceAccentClass}`} aria-hidden="true" />