fix: restore generated archive download export

Re-add downloadGeneratedArchiveByUrl in fleet dashboard store so notification detail modal imports resolve during frontend build.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/src/stores/fleetDashboardStore.js

@@ -1037,6 +1037,22 @@ export async function downloadGeneratedPdfByUrl(downloadUrl, filename = 'documen
     }
 }
 
+export async function downloadGeneratedArchiveByUrl(downloadUrl, filename = 'archive.zip') {
+    if (!downloadUrl) {
+        showToast('Nedostaje URL za preuzimanje ZIP arhive.', 'error');
+        throw new Error('Nedostaje URL za preuzimanje ZIP arhive.');
+    }
+    try {
+        const blob = await api.get(downloadUrl, { responseType: 'blob' });
+        saveBlobToFile(blob, filename);
+        return true;
+    } catch (err) {
+        const msg = err?.message || 'Preuzimanje ZIP arhive nije uspjelo.';
+        showToast(msg, 'error');
+        throw err;
+    }
+}
+
 export function openWorkOrderInvoicesPdfPage(workOrderId) {
     if (!isBrowser() || !workOrderId) {
         return;