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/computers/frontend/views/PCDetail.vue

@@ -15,7 +15,7 @@
       <!-- Hero Section -->
       <div class="hero-card">
         <div class="hero-image" v-if="computer.computer?.imageurl">
-          <img :src="computer.computer.imageurl" :alt="computer.computer.modelname || 'Model photo'" />
+          <img :src="withBase(computer.computer.imageurl)" :alt="computer.computer.modelname || 'Model photo'" />
         </div>
         <div class="hero-content">
           <div class="hero-title">
@@ -241,6 +241,7 @@ import { ref, onMounted } from 'vue'
 import { colorStyle } from "@/utils/colorStyle"
 import { useRoute } from 'vue-router'
 import { computersApi, applicationsApi } from '@/api'
+import { withBase } from '@/utils/basePath'
 import { useWarrantyBadge } from '@/composables/warrantyBadge'
 import LocationMapTooltip from '@/components/LocationMapTooltip.vue'
 import CustomFieldsSection from '@/components/CustomFieldsSection.vue'