feat(MikrotikSpeedTest): add speed test API route and frontend integration; implement caching and error handling for speed test functionality

frontend/src/InterfaceSpeedTest.jsx

@@ -186,7 +186,7 @@ export default function InterfaceSpeedTest() {
         interfaceName: selectedInterfaceName,
         durationSeconds: speedSettings.durationSeconds,
       };
-      const res = await api.post('/traffic/interface-speed-test', body);
+      const res = await api.post('/mikrotik/speed-test', body);
       const data = res?.data || {};
       if (data.ok === false) {
         notify.error(
@@ -197,7 +197,9 @@ export default function InterfaceSpeedTest() {
       setSpeedResult(data);
     } catch (e) {
       console.error('[InterfaceSpeedTest] test failed', e);
-      notify.error(e?.response?.data?.message || e?.message || 'Ошибка замера скорости');
+      notify.error(
+        e?.response?.data?.message || e?.message || 'Ошибка замера скорости'
+      );
     } finally {
       setRunning(false);
     }
@@ -446,14 +448,17 @@ export default function InterfaceSpeedTest() {
                     <div className="card bg-azure-lt">
                       <div className="card-body py-2">
                         <div className="text-muted small mb-1">
-                          Суммарная скорость
+                          TCP скорость (download + upload)
                         </div>
                         <div className="fw-bold fs-4">
-                          {formatMbps(speedResult.totalBps)}
+                          {formatMbps(
+                            (speedResult.tcpDownloadBps || 0) +
+                              (speedResult.tcpUploadBps || 0)
+                          )}
                         </div>
                         <div className="text-muted small">
-                          RX: {formatMbps(speedResult.rxBps)} · TX:{' '}
-                          {formatMbps(speedResult.txBps)}
+                          Download: {formatMbps(speedResult.tcpDownloadBps)} ·
+                          Upload: {formatMbps(speedResult.tcpUploadBps)}
                         </div>
                       </div>
                     </div>