List rows click through to the item; drop the redundant VLANs tab

Row-click: the whole table row now navigates to the item detail (machines, PCs,
printers, network devices, measuring tools, applications), matching the Networks
list. The actions cell is @click.stop so View/Edit/Delete still work
independently; a shared .clickable-row style gives the cursor + hover.

Network hub: drop the VLANs tab - a subnet belongs to a VLAN (each Networks row
already shows its VLAN) so a sibling tab was redundant; VLAN naming stays in
Settings. Hub is now Devices | Networks.

Verified: row-click navigates on machines/pcs/network; hub shows two tabs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/views/machines/MachinesList.vue

@@ -36,7 +36,7 @@
               </tr>
             </thead>
             <tbody>
-              <tr v-for="item in machines" :key="item.assetid">
+              <tr v-for="item in machines" :key="item.assetid" class="clickable-row" @click="$router.push(`/machines/${item.machine?.machineid || item.assetid}`)">
                 <td>
                   {{ item.assetnumber }}<template v-if="item.dualpathpartner"> / {{ item.dualpathpartner.assetnumber }}</template>
                 </td>
@@ -50,7 +50,7 @@
                   </span>
                 </td>
                 <td>{{ item.locationname || '-' }}</td>
-                <td class="actions">
+                <td class="actions" @click.stop>
                   <router-link
                     :to="`/machines/${item.machine?.machineid || item.assetid}`"
                     class="btn btn-secondary btn-sm"