Fix null status handling in overview page

- Add try-catch around loadVmStatus calls in Overview.php
- Add null checks in checkStatus method
- Wrap entire overview content in @if(\) / @else block
- Show friendly error state with retry button when status unavailable

extensions/Servers/Proxmox/Livewire/Overview.php

@@ -43,7 +43,11 @@ class Overview extends Component
         parent::mount($server);
 
         if (is_null($this->status)) {
-            $this->loadVmStatus();
+            try {
+                $this->loadVmStatus();
+            } catch (\Throwable $e) {
+                \Log::error('Overview: Failed to load VM status', ['error' => $e->getMessage()]);
+            }
         }
 
         $this->hostname = $server->hostname ?? ($this->status->name ?? '');
@@ -60,9 +64,24 @@ class Overview extends Component
 
     public function checkStatus()
     {
-        $currentStatus = $this->status->status;
-        $this->loadVmStatus();
-        if ($this->status->status != $currentStatus) {
+        if (!$this->status) {
+            try {
+                $this->loadVmStatus();
+            } catch (\Throwable $e) {
+                \Log::error('Overview: checkStatus failed', ['error' => $e->getMessage()]);
+            }
+            return;
+        }
+        
+        $currentStatus = $this->status->status ?? null;
+        try {
+            $this->loadVmStatus();
+        } catch (\Throwable $e) {
+            \Log::error('Overview: checkStatus loadVmStatus failed', ['error' => $e->getMessage()]);
+            return;
+        }
+        
+        if ($this->status && ($this->status->status ?? null) != $currentStatus) {
             $this->fastPolling = false;
         }
     }