Warranty polish: hero badges everywhere, search/pagination, re-check, shared apiError

- Shared utils/apiError.js reads the correct nested error message (with
  fallbacks); swept 37 views/components off the shallow path so real backend
  messages (e.g. in-use 409s) surface instead of generic "Failed".
- useWarrantyBadge composable: warranty hero status/end-date badge now on PC,
  equipment, printer, and network detail heroes (one shared fetch feeds the
  badge + the WarrantyPanel).
- Warranties list: client-side search (vendor/level/tag/asset) + pagination;
  truncate long service levels so they stop blowing out the table width.
- "Re-check all" button + POST /warranty/sync/dell?all=true to re-pull dated
  Dell warranties, not just missing ones.
- Deprecate the standalone pxe-images/warranty_sync.py in favor of the plugin.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/views/network/NetworkDeviceDetail.vue

@@ -27,6 +27,10 @@
           <span v-if="device.networkdevice?.vendorname" class="meta-item">
             {{ device.networkdevice.vendorname }}
           </span>
+          <span v-if="heroWarranty" class="badge" :style="{ background: heroWarranty.statuscolor, color: '#fff' }"
+                :title="heroWarranty.enddate ? `Warranty ends ${warrantyDate(heroWarranty.enddate)}` : 'Warranty'">
+            {{ heroWarranty.label }}<template v-if="heroWarranty.enddate"> - {{ warrantyDate(heroWarranty.enddate) }}</template>
+          </span>
         </div>
         <div class="hero-details">
           <div class="detail-item" v-if="device.assetnumber">
@@ -91,7 +95,7 @@
         <CustomFieldsSection :assetid="device.assetid" />
 
         <!-- Warranty -->
-        <WarrantyPanel :assetid="device.assetid" />
+        <WarrantyPanel :assetid="device.assetid" :items="warranties" />
 
         <!-- Notes -->
         <div class="section-card" v-if="device.notes">
@@ -198,6 +202,7 @@ import { networkApi } from '../../api'
 import AssetRelationships from '../../components/AssetRelationships.vue'
 import CustomFieldsSection from '../../components/CustomFieldsSection.vue'
 import WarrantyPanel from '../../components/WarrantyPanel.vue'
+import { useWarrantyBadge } from '../../composables/warrantyBadge'
 import { useIdentifierFlags } from '../../composables/identifierSettings'
 import { useToast } from '../../composables/toast'
 const toast = useToast()
@@ -210,6 +215,7 @@ const authStore = useAuthStore()
 
 const deviceId = route.params.id
 const device = ref(null)
+const { warranties, heroWarranty, warrantyDate } = useWarrantyBadge(() => device.value?.assetid)
 const loading = ref(true)
 
 onMounted(async () => {