ADR-013 Phase 3: migrate all detail pages to PluginAssetPanels; drop WarrantyPanel

Rolls the generic renderer into the remaining four detail pages (PCDetail,
PrinterDetail, NetworkDeviceDetail, MeasuringToolDetail), replacing the
hand-composed <WarrantyPanel> with <PluginAssetPanels>. The warranty hero badge
(useWarrantyBadge) stays on the pages that show it; MeasuringToolDetail dropped
its now-unused warranty composable usage.

WarrantyPanel.vue is deleted - warranty now renders entirely from its
get_asset_panels JSON declaration through the generic renderer. Verified live on
a PC with a warranty: the card is identical to the old bespoke panel (vendor
title, Expiring Soon status badge with color, servicelevel/ends/tag meta, manage
link) with no warranty-specific frontend code. Build clean, 58 vitest, naming green.

frontend/src/views/network/NetworkDeviceDetail.vue

@@ -149,7 +149,7 @@
         <CustomFieldsSection :assetid="device.assetid" />
 
         <!-- Warranty -->
-        <WarrantyPanel :assetid="device.assetid" :items="warranties" />
+        <PluginAssetPanels :assetid="device.assetid" />
 
         <!-- Relationships -->
         <AssetRelationships
@@ -204,7 +204,7 @@ import { useAuthStore } from '../../stores/auth'
 import { networkApi } from '../../api'
 import AssetRelationships from '../../components/AssetRelationships.vue'
 import CustomFieldsSection from '../../components/CustomFieldsSection.vue'
-import WarrantyPanel from '../../components/WarrantyPanel.vue'
+import PluginAssetPanels from '../../components/PluginAssetPanels.vue'
 import { useWarrantyBadge } from '../../composables/warrantyBadge'
 import { useIdentifierFlags } from '../../composables/identifierSettings'
 import { useToast } from '../../composables/toast'
@@ -218,7 +218,7 @@ const authStore = useAuthStore()
 
 const deviceId = route.params.id
 const device = ref(null)
-const { warranties, heroWarranty, warrantyDate } = useWarrantyBadge(() => device.value?.assetid)
+const { heroWarranty, warrantyDate } = useWarrantyBadge(() => device.value?.assetid)
 const loading = ref(true)
 
 onMounted(async () => {