Fix model images 404 under a subpath mount (withBase)

Model image URLs are root-relative (/api/models/image/...), so on an /ops
subpath deploy the raw <img src> resolved to the server root and 404'd. Wrap
every model-image src in withBase(): machine/printer/PC/network detail heroes,
the models settings preview, and the machine-badge / asset-label print pages.
withBase leaves external http(s)/data URLs untouched.

plugins/network/frontend/views/NetworkDeviceDetail.vue

@@ -2,7 +2,7 @@
   <div class="detail-page" v-if="device">
     <div class="hero-card">
       <div class="hero-image">
-        <img v-if="device.networkdevice?.imageurl" :src="device.networkdevice.imageurl" alt="Model photo" />
+        <img v-if="device.networkdevice?.imageurl" :src="withBase(device.networkdevice.imageurl)" alt="Model photo" />
         <div class="device-icon" v-else>
           <span class="icon"><component :is="getDeviceIcon()" :size="24" /></span>
         </div>
@@ -202,6 +202,7 @@ import { useRoute, useRouter } from 'vue-router'
 import { Network, Router, Shield, Wifi, Camera, Server, Server as Rack, Globe } from 'lucide-vue-next'
 import { useAuthStore } from '@/stores/auth'
 import { networkApi } from '@/api'
+import { withBase } from '@/utils/basePath'
 import AssetRelationships from '@/components/AssetRelationships.vue'
 import CustomFieldsSection from '@/components/CustomFieldsSection.vue'
 import PluginAssetPanels from '@/components/PluginAssetPanels.vue'