fix(ipam): require resource name before allocating IP and fill missing fields on VM link

- Validate resource name in auto-allocate form before sending request
- Fill resource_name, proxmox_node, resource_type, mac_address when syncing
  a VM that already has matching vmid/server_id but missing metadata

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/ipam_service.py

@@ -707,8 +707,16 @@ class IPAMService:
                     last_seen=utcnow()
                 )
             else:
-                # Just update last_seen
+                # vmid/server already match — update last_seen and fill missing resource_name/node
                 existing.last_seen = utcnow()
+                if not existing.resource_name and vm_name:
+                    existing.resource_name = vm_name
+                if not existing.proxmox_node and node:
+                    existing.proxmox_node = node
+                if not existing.resource_type and vm_type:
+                    existing.resource_type = vm_type
+                if mac_address and not existing.mac_address:
+                    existing.mac_address = mac_address
                 self.db.commit()
                 return existing, None
         

frontend/src/features/ipam/IPAMToolsPage.tsx

@@ -97,6 +97,7 @@ function AllocateCard() {
   };
   const handleAllocate = () => {
     if (!networkId) { toast.error(t('ipam.select_network')); return; }
+    if (!resourceName.trim()) { toast.error(t('ipam.resource_required')); return; }
     autoAllocate.mutate(
       { network_id: Number(networkId), resource_name: resourceName || undefined, hostname: hostname || undefined },
       {

frontend/src/locales/en.json

@@ -583,6 +583,7 @@
     "linked": "Linked",
     "ip_history": "IP history lookup",
     "pool_required_hint": "Auto-allocation requires an auto-assign pool in the network.",
+    "resource_required": "Please specify a resource before allocating an IP.",
     "dashboard": "IPAM Dashboard",
     "networks": "Networks",
     "networks_count": "Networks",

frontend/src/locales/ru.json

@@ -583,6 +583,7 @@
     "linked": "Связано",
     "ip_history": "История по IP",
     "pool_required_hint": "Авто-выделение требует пул с auto-assign в сети.",
+    "resource_required": "Укажите ресурс перед выделением IP.",
     "dashboard": "IPAM Дашборд",
     "networks": "Сети",
     "networks_count": "Сетей",