revert(web): drop duplicates display until the server reports them

The upload-import path never increments duplicates (a dedup hit
returns Ok and counts as success), so the counter and the progress
math addition could only ever render dead zeros. The display returns
together with the server-side fix; the client-side aggregation of the
duplicates field stays, as issue #2 specifies.

web/src/features/import/index.tsx

@@ -9,7 +9,7 @@ import { useMutation, useQuery } from '@tanstack/react-query';
 import {
   Upload, FileText, X, CheckCircle2, AlertTriangle,
   Sparkles, PenLine, ListTree, ChevronsUpDown, Check,
-  Clock, ChevronRight, Copy,
+  Clock, ChevronRight,
 } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
@@ -659,16 +659,16 @@ export default function ImportPage() {
                   <div className="space-y-1.5">
                     <div className="flex justify-between text-xs text-muted-foreground">
                       <span>
-                        {t('import.processed', { current: progress.success + progress.failed + progress.duplicates, total: progress.total })}
+                        {t('import.processed', { current: progress.success + progress.failed, total: progress.total })}
                       </span>
                       <span>
                         {progress.total > 0
-                          ? Math.round(((progress.success + progress.failed + progress.duplicates) / progress.total) * 100)
+                          ? Math.round(((progress.success + progress.failed) / progress.total) * 100)
                           : 0}%
                       </span>
                     </div>
                     <Progress
-                      value={progress.total > 0 ? ((progress.success + progress.failed + progress.duplicates) / progress.total) * 100 : 0}
+                      value={progress.total > 0 ? ((progress.success + progress.failed) / progress.total) * 100 : 0}
                       className="h-2"
                     />
                   </div>
@@ -684,12 +684,6 @@ export default function ImportPage() {
                       <AlertTriangle className="h-3.5 w-3.5 text-amber-600" />
                       {t('import.failedCount', { count: progress.failed })}
                     </span>
-                    {progress.duplicates > 0 && (
-                      <span className="flex items-center gap-1">
-                        <Copy className="h-3.5 w-3.5 text-muted-foreground" />
-                        {t('import.duplicateCount', { count: progress.duplicates })}
-                      </span>
-                    )}
                   </div>
                 )}
 

web/src/locales/en.json

@@ -739,7 +739,6 @@
     "detectedFolder": "Detected",
     "detectedFrom": "Detected from",
     "dropHere": "Drop .eml / .mbox / .pst files here",
-    "duplicateCount": "{{count}} duplicates skipped",
     "failed": "Import failed",
     "failedCount": "{{count}} failed",
     "failedDetails": "Failed items",