feat(i18n): U46 残余UI硬编码中文清零 — 6文件12处→0 (UserFormDialog/CredentialManager/RdpAuditViewer/LiveMonitorDialog/ServerFileBrowser/context-loaders) +17翻译键 zh/en 8085→8102对齐

frontend/src/components/system/RdpAuditViewer.tsx

@@ -70,7 +70,7 @@ async function drawImageFrame(ctx: CanvasRenderingContext2D, frame: RdpFrame) {
       ctx.drawImage(img, frame.x || 0, frame.y || 0, frame.width || img.width, frame.height || img.height);
       resolve();
     };
-    img.onerror = () => reject(new Error('RDP 录屏帧解码失败'));
+    img.onerror = () => reject(new Error(i18n.t('system.rdpFrameError')));
     img.src = frame.image || '';
   });
 }
@@ -242,7 +242,7 @@ export function RdpAuditViewer({ open, onOpenChange, sessionId, mode }: RdpAudit
         <DialogDescription className="sr-only">{i18n.t("system.rdpAuditDesc")}</DialogDescription>
         <div className="flex items-center justify-between px-4 py-2 border-b border-[var(--dg-border)]">
           <div className="text-sm font-medium text-[var(--dg-text-primary)]">
-            {mode === 'live' ? 'RDP 实时审计' : `RDP 历史回放 #${sessionId || ''}`}
+            {mode === 'live' ? i18n.t('system.rdpLiveAudit') : i18n.t('system.rdpHistoryReplayId', { id: sessionId || '' })}
           </div>
           <div className="flex items-center gap-1">
             <button type="button" onClick={() => setFullscreen(!fullscreen)} className="p-1.5 rounded hover:bg-[var(--dg-bg-hover)] text-[var(--dg-text-secondary)]">