feat: Update Proxmox extension with various improvements and bug fixes

- Change listStates method to accept nullable integer for limit parameter.
- Modify TechnitiumDns class to return structured error messages on failure.
- Enhance VNC and xterm popup routes with user authorization checks.
- Update backups view to improve loading states and add unique keys for dynamic elements.
- Refactor cloud-init view to ensure proper data binding and improve user experience.
- Add wire:key attributes to various elements in views for better Livewire performance.
- Improve error handling and user feedback in the firewall view.
- Update server overview and statistics views to handle potential null values gracefully.
- Add new migration files to extend database schema with user-set icons and notes for Proxmox nodes.

extensions/Servers/Proxmox/Livewire/CloudInit.php

@@ -103,11 +103,17 @@ class CloudInit extends Component
     public function applyCloudInit()
     {
         $originalOsType = $this->original['osType'] ?? '';
-        $deleteOstype = false;
+        $originalCiUser = $this->original['ciUser'] ?? '';
+        $deleteKeys = [];
         
         // If ostype is being cleared (empty) and was previously set, we need to delete it
         if ($this->osType === '' && $originalOsType !== '' && in_array($originalOsType, self::VALID_OS_TYPES, true)) {
-            $deleteOstype = true;
+            $deleteKeys[] = 'ostype';
+        }
+        
+        // If ciuser is being cleared (empty) and was previously set, we need to delete it
+        if ($this->ciUser === '' && $originalCiUser !== '') {
+            $deleteKeys[] = 'ciuser';
         }
         
         $payload = [
@@ -139,9 +145,9 @@ class CloudInit extends Component
         // Filter out null values, but keep empty strings (for clearing searchdomain and nameserver)
         $payload = array_filter($payload, fn ($value) => $value !== null);
         
-        // Add delete parameter if we need to clear ostype
-        if ($deleteOstype) {
-            $payload['delete'] = 'ostype';
+        // Add delete parameter for keys that need to be explicitly removed
+        if (!empty($deleteKeys)) {
+            $payload['delete'] = implode(',', $deleteKeys);
         }
 
         if (empty($payload)) {
@@ -250,7 +256,7 @@ class CloudInit extends Component
             return [];
         }
 
-        $keys = array_filter(array_map('urldecode', preg_split("/[\r\n]+/", $rawKeys)));
+        $keys = array_filter(array_map('trim', preg_split("/[\r\n]+/", urldecode($rawKeys))));
 
         return array_values(array_filter($keys, function ($key) {
             $normalized = preg_replace('/\s+/', ' ', trim($key));
@@ -333,23 +339,24 @@ class CloudInit extends Component
     protected function buildIpConfigString(array $network): ?string
     {
         $parts = [];
+        $isDhcp = ($network['dhcp'] ?? false) === true;
 
-        if (($network['dhcp'] ?? false) === true) {
+        if ($isDhcp) {
             $parts[] = 'ip=dhcp';
         } elseif (!empty($network['ip'])) {
             $parts[] = 'ip=' . trim($network['ip']);
-        }
 
-        if (!empty($network['gw'])) {
-            $parts[] = 'gw=' . trim($network['gw']);
+            if (!empty($network['gw'])) {
+                $parts[] = 'gw=' . trim($network['gw']);
+            }
         }
 
         if (!empty($network['ip6'])) {
             $parts[] = 'ip6=' . trim($network['ip6']);
-        }
 
-        if (!empty($network['gw6'])) {
-            $parts[] = 'gw6=' . trim($network['gw6']);
+            if (!empty($network['gw6'])) {
+                $parts[] = 'gw6=' . trim($network['gw6']);
+            }
         }
 
         if (empty($parts)) {