Enhance Proxmox views with improved loading states and UI updates

- Updated serverplaceholder.blade.php to enhance loading skeletons for server details.
- Added navigation breadcrumbs to statistics, subdomain, and system views for better user experience.
- Improved loading indicators for CPU, network, memory, and disk charts in statistics.blade.php.
- Refined storage.blade.php layout with section dividers and improved drive display, including bus type indicators and quota usage.
- Enhanced VNC and Xterm popups with a new header design, loading animations, and reconnect functionality.
- Added error handling for VNC and Xterm connections to inform users when unable to connect.

extensions/Servers/Proxmox/Livewire/System.php

@@ -310,6 +310,22 @@ class System extends Component
 
     public function saveSystemSettings(): void
     {
+        // Validate biosType against allowed options
+        $allowedBios = array_column($this->availableBiosOptions, 'value');
+        if ($this->biosType !== '' && !in_array($this->biosType, $allowedBios, true)) {
+            $this->notify('Invalid BIOS type selected.', 'error');
+            return;
+        }
+
+        // Validate cpuType against allowed options
+        if ($this->cpuType !== '') {
+            $allowedCpuTypes = array_column($this->availableCpuTypes, 'value');
+            if (!empty($allowedCpuTypes) && !in_array($this->cpuType, $allowedCpuTypes, true)) {
+                $this->notify('Invalid CPU type selected.', 'error');
+                return;
+            }
+        }
+
         $flags = $this->formatFlagsForSave($this->selectedCpuFlags);
         $resolvedCpu = $this->cpuType !== '' ? $this->cpuType : null;
 
@@ -616,6 +632,13 @@ class System extends Component
             return;
         }
 
+        // Validate TPM version against allowed values
+        $allowedVersions = ['v1.2', 'v2.0'];
+        if (!in_array($version, $allowedVersions, true)) {
+            $this->notify('Invalid TPM version. Must be v1.2 or v2.0.', 'error');
+            return;
+        }
+
         $volumeName = 'vm-' . $this->server->vm_id . '-tpm';
         
         try {