feat: dodaj DOCX akcije i napomene na racunima

- dodaje DOCX preuzimanje za putni nalog, servisne zapise i racune na /putni-nalozi/racuni\n- uvodi modal za uredjivanje teksta napomene izvjestaja servisera\n- poboljsava update work order toka i upsert lokalnog stanja\n- ukljucuje TaskCalendar migraciju, dev watch stabilizaciju i deploy upute

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

frontend/src/stores/fleetDashboardStore.js

@@ -257,6 +257,16 @@ function replaceWorkOrderItem(workOrderId, nextValue) {
     );
 }
 
+function upsertWorkOrderItem(workOrderId, nextValue) {
+    const current = $workOrders.get();
+    const exists = current.some((item) => String(item.id) === String(workOrderId));
+    if (exists) {
+        replaceWorkOrderItem(workOrderId, nextValue);
+        return;
+    }
+    $workOrders.set([nextValue, ...current]);
+}
+
 function appendLocalDraft(entity, payload, tempId) {
     const base = {
         ...payload,
@@ -547,15 +557,12 @@ export async function createWorkOrder(data) {
 
 export async function updateWorkOrder(workOrderId, changes) {
     const existing = $workOrders.get().find((item) => String(item.id) === String(workOrderId));
-    if (!existing) {
-        throw new Error('Work order nije pronađen u lokalnom stanju.');
-    }
 
     const canSendNow = isBrowser() && navigator.onLine && !!$accessToken.get();
     if (canSendNow) {
         try {
             const response = await api.patch(`fleet/work-orders/${workOrderId}/`, changes);
-            replaceWorkOrderItem(workOrderId, response);
+            upsertWorkOrderItem(workOrderId, response);
             await persistDashboardCache();
             await logSync(
                 { entity: 'work_orders', endpoint: `fleet/work-orders/${workOrderId}/`, method: 'PATCH' },
@@ -575,6 +582,10 @@ export async function updateWorkOrder(workOrderId, changes) {
         }
     }
 
+    if (!existing) {
+        throw new Error('Work order nije dostupan offline. Otvorite dashboard ili pokušajte ponovno kada ste online.');
+    }
+
     const optimistic = {
         ...existing,
         ...changes,
@@ -849,6 +860,51 @@ export async function downloadWorkOrderServiceRecordsPdf(workOrderId) {
     return payload;
 }
 
+export async function downloadWorkOrderDocx(workOrderId) {
+    if (!workOrderId) {
+        throw new Error('Work order ID je obavezan.');
+    }
+    try {
+        const blob = await api.get(`fleet/work-orders/${encodeURIComponent(workOrderId)}/docx/`, { responseType: 'blob' });
+        saveBlobToFile(blob, `${workOrderId}.work-order.docx`);
+        showToast('DOCX putnog naloga je preuzet.', 'success');
+    } catch (err) {
+        const msg = err?.message || 'Preuzimanje DOCX putnog naloga nije uspjelo.';
+        showToast(msg, 'error');
+        throw err;
+    }
+}
+
+export async function downloadWorkOrderServiceRecordsDocx(workOrderId) {
+    if (!workOrderId) {
+        throw new Error('Work order ID je obavezan.');
+    }
+    try {
+        const blob = await api.get(`fleet/work-orders/${encodeURIComponent(workOrderId)}/service-records-docx/`, { responseType: 'blob' });
+        saveBlobToFile(blob, `${workOrderId}.work-order-service-records.docx`);
+        showToast('DOCX servisnih zapisa je preuzet.', 'success');
+    } catch (err) {
+        const msg = err?.message || 'Preuzimanje DOCX servisnih zapisa nije uspjelo.';
+        showToast(msg, 'error');
+        throw err;
+    }
+}
+
+export async function downloadWorkOrderInvoicesDocx(workOrderId) {
+    if (!workOrderId) {
+        throw new Error('Work order ID je obavezan.');
+    }
+    try {
+        const blob = await api.get(`fleet/work-orders/${encodeURIComponent(workOrderId)}/invoices-docx/`, { responseType: 'blob' });
+        saveBlobToFile(blob, `${workOrderId}.work-order-invoices.docx`);
+        showToast('DOCX računa putnog naloga je preuzet.', 'success');
+    } catch (err) {
+        const msg = err?.message || 'Preuzimanje DOCX računa nije uspjelo.';
+        showToast(msg, 'error');
+        throw err;
+    }
+}
+
 export async function downloadGeneratedPdfByUrl(downloadUrl, filename = 'document.pdf') {
     if (!downloadUrl) {
         showToast('Nedostaje URL za preuzimanje PDF-a.', 'error');