feat: add tracking input, save button, and PostNord link to admin dashboard

- api/admin.ts: updateTracking(orderId, trackingId) calls PATCH
  /api/admin/orders/{id} with JSON { trackingId }
- AdminPage.vue expanded row: add "Spårnings-ID" section below
  Brevtext with text input, save button, and PostNord link
- trackingInputValues reactive map tracks per-order input state
- toggleExpand initialises trackingInputValues[orderId] from
  order.trackingId on first expand
- handleTrackingSave: PATCH API call with optimistic local update,
  reverts on error, shows red inline error
- PostNord link (<a target="_blank">): https://www.postnord.se/
  verktyg/spara/?id={trackingId}, only visible when trackingId
  is non-null
- trackingError ref for inline error state
- CSS: tracking section styling, input focus ring, blue save button

frontend/src/api/admin.ts

@@ -24,3 +24,13 @@ export function updateOrderStatus(
     body: JSON.stringify({ status }),
   })
 }
+
+export function updateTracking(
+  orderId: string,
+  trackingId: string | null,
+): Promise<AdminOrder> {
+  return request<AdminOrder>(`/admin/orders/${orderId}`, {
+    method: 'PATCH',
+    body: JSON.stringify({ trackingId }),
+  })
+}

frontend/src/pages/AdminPage.vue

@@ -1,12 +1,19 @@
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, onMounted, reactive } from 'vue'
-import { fetchAllOrders, updateOrderStatus, type AdminOrder } from '@/api/admin'
+import {
+  fetchAllOrders,
+  updateOrderStatus,
+  updateTracking,
+  type AdminOrder,
+} from '@/api/admin'
 
 const orders = ref<AdminOrder[]>([])
 const expandedOrderId = ref<string | null>(null)
 const loading = ref(true)
 const error = ref('')
 const statusError = ref('')
+const trackingError = ref('')
+const trackingInputValues = reactive<Record<string, string>>({})
 
 const statusLabels: Record<string, string> = {
   pending_payment: 'Väntar på betalning',
@@ -44,7 +51,15 @@ function formatDate(iso: string): string {
 }
 
 function toggleExpand(orderId: string) {
-  expandedOrderId.value = expandedOrderId.value === orderId ? null : orderId
+  if (expandedOrderId.value === orderId) {
+    expandedOrderId.value = null
+  } else {
+    expandedOrderId.value = orderId
+    const order = orders.value.find((o) => o.id === orderId)
+    if (order && !(orderId in trackingInputValues)) {
+      trackingInputValues[orderId] = order.trackingId ?? ''
+    }
+  }
 }
 
 async function handleStatusChange(orderId: string, newStatus: string) {
@@ -63,6 +78,23 @@ async function handleStatusChange(orderId: string, newStatus: string) {
   }
 }
 
+async function handleTrackingSave(orderId: string) {
+  const newTrackingId = trackingInputValues[orderId]?.trim() || null
+  const order = orders.value.find((o) => o.id === orderId)
+  if (!order) return
+
+  const previousTrackingId = order.trackingId
+  order.trackingId = newTrackingId
+  trackingError.value = ''
+
+  try {
+    await updateTracking(orderId, newTrackingId)
+  } catch {
+    order.trackingId = previousTrackingId
+    trackingError.value = 'Kunde inte spara spårnings-ID. Försök igen.'
+  }
+}
+
 onMounted(async () => {
   try {
     orders.value = await fetchAllOrders()
@@ -153,6 +185,51 @@ onMounted(async () => {
                     {{ order.letterText }}
                   </div>
                 </div>
+
+                <div class="admin-dashboard__tracking">
+                  <div class="admin-dashboard__tracking-header">
+                    <span class="admin-dashboard__tracking-label"
+                      >Spårnings-ID</span
+                    >
+                    <a
+                      v-if="order.trackingId"
+                      class="admin-dashboard__tracking-link"
+                      :href="`https://www.postnord.se/verktyg/spara/?id=${order.trackingId}`"
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      @click.stop
+                    >
+                      Spåra hos PostNord ↗
+                    </a>
+                  </div>
+
+                  <p v-if="trackingError" class="admin-dashboard__status-error">
+                    {{ trackingError }}
+                  </p>
+
+                  <div class="admin-dashboard__tracking-input-row">
+                    <input
+                      class="admin-dashboard__tracking-input"
+                      type="text"
+                      :value="
+                        trackingInputValues[order.id] ?? order.trackingId ?? ''
+                      "
+                      placeholder="PN..."
+                      @input="
+                        trackingInputValues[order.id] = (
+                          $event.target as HTMLInputElement
+                        ).value
+                      "
+                      @click.stop
+                    />
+                    <button
+                      class="admin-dashboard__tracking-save"
+                      @click.stop="handleTrackingSave(order.id)"
+                    >
+                      Spara spårning
+                    </button>
+                  </div>
+                </div>
               </td>
             </tr>
           </template>
@@ -321,4 +398,70 @@ onMounted(async () => {
   line-height: 1.6;
   white-space: pre-wrap;
 }
+
+.admin-dashboard__tracking {
+  padding: 1rem 1.25rem;
+  border-top: 1px solid #e2e8f0;
+}
+
+.admin-dashboard__tracking-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 0.5rem;
+}
+
+.admin-dashboard__tracking-label {
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: #a0aec0;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+
+.admin-dashboard__tracking-link {
+  font-size: 0.8125rem;
+  color: #4299e1;
+  text-decoration: none;
+}
+
+.admin-dashboard__tracking-link:hover {
+  text-decoration: underline;
+}
+
+.admin-dashboard__tracking-input-row {
+  display: flex;
+  gap: 0.5rem;
+}
+
+.admin-dashboard__tracking-input {
+  flex: 1;
+  padding: 0.5rem 0.75rem;
+  border: 1px solid #e2e8f0;
+  border-radius: 0.375rem;
+  font-size: 0.8125rem;
+  color: #4a5568;
+  outline: none;
+}
+
+.admin-dashboard__tracking-input:focus {
+  border-color: #4299e1;
+  box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.2);
+}
+
+.admin-dashboard__tracking-save {
+  padding: 0.5rem 1rem;
+  border: none;
+  border-radius: 0.375rem;
+  background: #4299e1;
+  color: #fff;
+  font-size: 0.8125rem;
+  font-weight: 600;
+  cursor: pointer;
+  white-space: nowrap;
+}
+
+.admin-dashboard__tracking-save:hover {
+  background: #3182ce;
+}
 </style>