fix slow zip progress display rounding

WebSite/src/App.tsx

@@ -99,11 +99,16 @@ const API_BASE = typeof window === 'undefined'
 function progressFromJob(job: BackendJob, fallback = 0) {
   if (job.status === 'completed') return 100;
   if (typeof job.progress === 'number') {
-    return Math.max(0, Math.min(100, Math.round(job.progress)));
+    return Math.max(0, Math.min(100, job.progress));
   }
   return Math.max(0, Math.min(95, fallback));
 }
 
+function formatProgress(value: number) {
+  const bounded = Math.max(0, Math.min(100, value));
+  return Number.isInteger(bounded) ? `${bounded}` : bounded.toFixed(1);
+}
+
 function readStoredDeformationJob(): StoredDeformationJob | null {
   if (typeof window === 'undefined') return null;
   try {
@@ -948,7 +953,7 @@ export default function App() {
                       >
                         <Download size={14} />
                         {zipJobs.all?.status === 'running'
-                          ? `四状态 ZIP 打包中 ${progressFromJob(zipJobs.all, 0)}%`
+                          ? `四状态 ZIP 打包中 ${formatProgress(progressFromJob(zipJobs.all, 0))}%`
                           : '下载四状态 ZIP'}
                       </button>
                     )}
@@ -1057,7 +1062,7 @@ export default function App() {
                           >
                             <Download size={13} />
                             {zipJob?.status === 'running'
-                              ? `打包中 ${progressFromJob(zipJob, 0)}%`
+                              ? `打包中 ${formatProgress(progressFromJob(zipJob, 0))}%`
                               : '下载本状态 DICOM ZIP'}
                           </button>
                         )}