feat: support network boot (PXE) for VM interfaces (#1176)

Add an "Enable network boot (PXE)" option to bridge network interfaces and
a VM-level choice to place network boot devices before or after volumes.
The form now owns interface boot order: enabled NICs get sequential boot
orders ahead of or behind the volumes, and a stale bootOrder is no longer
inherited from the old spec.

This also fixes editing a VM whose interface bootOrder was set in YAML
(the documented workaround): the form used to renumber disks from 1 while
keeping the NIC's bootOrder, producing a duplicate that KubeVirt rejects.

The boot order shown on the VM, snapshot and backup detail pages now
includes network interfaces.

Related: harvester/harvester#3325

Signed-off-by: Alejandro Bonilla <abonilla@suse.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

pkg/harvester/edit/kubevirt.io.virtualmachine/VirtualMachineNetwork/base.vue

@@ -2,6 +2,7 @@
 import InputOrDisplay from '@shell/components/InputOrDisplay';
 import { LabeledInput } from '@components/Form/LabeledInput';
 import LabeledSelect from '@shell/components/form/LabeledSelect';
+import { Checkbox } from '@components/Form/Checkbox';
 
 import { clone } from '@shell/utils/object';
 import { _CREATE, _VIEW } from '@shell/config/query-params';
@@ -33,7 +34,7 @@ export default {
   emits: ['update'],
 
   components: {
-    LabeledInput, LabeledSelect, InputOrDisplay
+    LabeledInput, LabeledSelect, InputOrDisplay, Checkbox
   },
 
   props: {
@@ -169,6 +170,7 @@ export default {
         this.value.isPod = true;
         this.value.macAddress = '';
         this.value.staticIp = '';
+        this.value.networkBoot = false;
       } else {
         this.value.isPod = false;
       }
@@ -285,6 +287,22 @@ export default {
       </div>
     </div>
 
+    <div
+      v-if="!isMasquerade"
+      data-testid="input-hen-networkBoot"
+      class="row mb-20"
+    >
+      <div class="col span-12">
+        <Checkbox
+          v-model:value="value.networkBoot"
+          :label="t('harvester.virtualMachine.network.networkBoot.label')"
+          :tooltip="t('harvester.virtualMachine.network.networkBoot.tip')"
+          :mode="mode"
+          @update:value="update"
+        />
+      </div>
+    </div>
+
     <div v-if="!isMasquerade && isSingle">
       <div class="row mb-20">
         <a

pkg/harvester/edit/kubevirt.io.virtualmachine/VirtualMachineNetwork/index.vue

@@ -1,5 +1,6 @@
 <script>
 import InfoBox from '@shell/components/InfoBox';
+import { RadioGroup } from '@components/Form/Radio';
 import { NETWORK_ATTACHMENT } from '@shell/config/types';
 import { sortBy } from '@shell/utils/sort';
 import { clone } from '@shell/utils/object';
@@ -10,7 +11,11 @@ import { HCI as HCI_ANNOTATIONS } from '../../../config/labels-annotations';
 import Base from './base';
 
 export default {
-  components: { InfoBox, Base },
+  components: {
+    InfoBox, Base, RadioGroup
+  },
+
+  emits: ['update:value', 'update:networkBootFirst'],
 
   props: {
     vm: {
@@ -35,6 +40,11 @@ export default {
     isSingle: {
       type:    Boolean,
       default: true
+    },
+
+    networkBootFirst: {
+      type:    Boolean,
+      default: true
     }
   },
 
@@ -82,6 +92,20 @@ export default {
 
     vmState() {
       return this.vm?.stateDisplay;
+    },
+
+    hasNetworkBoot() {
+      return this.rows.some((R) => R.networkBoot);
+    },
+
+    networkBootOrderOptions() {
+      return [{
+        label: this.t('harvester.virtualMachine.network.networkBoot.first'),
+        value: true
+      }, {
+        label: this.t('harvester.virtualMachine.network.networkBoot.last'),
+        value: false
+      }];
     }
   },
 
@@ -218,6 +242,22 @@ export default {
       />
     </InfoBox>
 
+    <div
+      v-if="hasNetworkBoot"
+      data-testid="input-hen-networkBootFirst"
+      class="mb-20"
+    >
+      <RadioGroup
+        :value="networkBootFirst"
+        name="networkBootFirst"
+        :label="t('harvester.virtualMachine.network.networkBoot.order')"
+        :options="networkBootOrderOptions"
+        :mode="mode"
+        :row="true"
+        @update:value="$emit('update:networkBootFirst', $event)"
+      />
+    </div>
+
     <button
       v-if="!isView"
       type="button"