ADR-013 Phase 4: relocate the remaining 9 plugin frontends (all 13 done)

Relocate warranty, measuringtools, network, printers, usb, notifications,
computers, and slides into plugins/<name>/frontend/. Each plugin's views are
pulled from wherever they lived (own dir, plus the shared views/settings/,
views/reports/, views/print/ dirs, and top-level views) into the plugin's
frontend/views/, and its route file becomes the self-contained routes.js.

Handled the messy cases:
- computers: name mismatch (its views live in views/pcs/) - moved by following
  the route file's own imports, so the dir name did not matter. Its OS/access-
  protocol/PC-type settings views move with it (only computers.js routed them).
- network: NetworkHub's sibling sub-views (NetworkDevicesList, SubnetsBrowse,
  not directly routed) moved too so its `./` imports resolve.
- printers: the qrLogo helper is SHARED with core AssetLabel, so it stays in
  views/print/ and PrinterQR imports it via @/views/print/qrLogo.
- slides: route file is toplevel-only (TVDashboard); SlideManager stays core
  (core.js routes /settings/slides).

frontend/src/views/ now holds only core views; frontend/src/router/routes/ holds
only core.js. All 13 plugins are self-contained under plugins/<name>/frontend/.
Verified live: Network (hub + moved sub-views), Computers (name mismatch),
GE-Enforce (helper), printedparts all render from their staged frontends. Build +
58 vitest + naming green.

plugins/network/frontend/views/SubnetsBrowse.vue

@@ -0,0 +1,75 @@
+<template>
+  <div>
+    <div class="filters">
+      <input v-model="search" type="text" placeholder="Search networks..." class="form-control" />
+    </div>
+
+    <div class="card">
+      <div v-if="loading" class="loading">Loading...</div>
+      <div v-else-if="filtered.length === 0" class="empty-state"><p>No networks found.</p></div>
+      <div v-else class="table-container">
+        <table>
+          <thead>
+            <tr>
+              <th>Name</th>
+              <th>CIDR</th>
+              <th>Type</th>
+              <th>VLAN</th>
+              <th>Notes</th>
+              <th class="actions"></th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr v-for="subnet in filtered" :key="subnet.subnetid" class="clickable-row"
+                @click="$router.push(`/networks/${subnet.subnetid}`)">
+              <td>{{ subnet.name || '-' }}</td>
+              <td class="mono">{{ subnet.cidr }}</td>
+              <td>{{ subnet.subnettype || '-' }}</td>
+              <td>{{ subnet.vlannumber || subnet.vlanid || '-' }}</td>
+              <td class="cell-truncate" :title="subnet.description">{{ subnet.description || '-' }}</td>
+              <td class="actions">
+                <router-link :to="`/networks/${subnet.subnetid}`" class="btn btn-sm btn-secondary" @click.stop>View</router-link>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { ref, computed, onMounted } from 'vue'
+import { networkApi } from '@/api'
+
+const subnets = ref([])
+const loading = ref(true)
+const search = ref('')
+
+const filtered = computed(() => {
+  const term = search.value.trim().toLowerCase()
+  if (!term) return subnets.value
+  return subnets.value.filter(s =>
+    (s.name || '').toLowerCase().includes(term) ||
+    (s.cidr || '').toLowerCase().includes(term) ||
+    (s.subnettype || '').toLowerCase().includes(term) ||
+    (s.description || '').toLowerCase().includes(term))
+})
+
+async function load() {
+  loading.value = true
+  try {
+    const response = await networkApi.subnets.list({ per_page: 1000 })
+    subnets.value = response.data?.data || response.data || []
+  } finally {
+    loading.value = false
+  }
+}
+
+onMounted(load)
+</script>
+
+<style scoped>
+.clickable-row { cursor: pointer; }
+.clickable-row:hover { background: var(--bg); }
+</style>