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/printers/PrinterDetail.vue

@@ -25,6 +25,10 @@
             <span v-if="printer.printer?.iscsf" class="badge badge-lg badge-info">CSF</span>
             <span v-if="printer.printer?.iscolor" class="badge badge-lg badge-success">Color</span>
             <span v-if="printer.printer?.isnetwork" class="badge badge-lg badge-secondary">Network</span>
+            <span v-if="heroWarranty" class="badge badge-lg" :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="hero-detail" v-if="printer.printer?.vendorname">
@@ -121,7 +125,7 @@
           <CustomFieldsSection :assetid="printer.assetid" />
 
           <!-- Warranty -->
-          <WarrantyPanel :assetid="printer.assetid" />
+          <WarrantyPanel :assetid="printer.assetid" :items="warranties" />
 
           <!-- Notes -->
           <div class="section-card" v-if="printer.notes">
@@ -263,6 +267,7 @@ import { printersApi } from '../../api'
 import LocationMapTooltip from '../../components/LocationMapTooltip.vue'
 import CustomFieldsSection from '../../components/CustomFieldsSection.vue'
 import WarrantyPanel from '../../components/WarrantyPanel.vue'
+import { useWarrantyBadge } from '../../composables/warrantyBadge'
 import { useIdentifierFlags } from '../../composables/identifierSettings'
 
 const route = useRoute()
@@ -270,6 +275,7 @@ const { isEnabled } = useIdentifierFlags()
 
 const loading = ref(true)
 const printer = ref(null)
+const { warranties, heroWarranty, warrantyDate } = useWarrantyBadge(() => printer.value?.assetid)
 const supplies = ref([])
 const drivers = ref([])