Add auto-generated default volume name

Pre-fill volume name with <app-name>-data (slugified) when creating
a new volume mount, improving UX by providing a sensible default.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Livewire/Project/Service/Storage.php

@@ -56,6 +56,7 @@ class Storage extends Component
         }
 
         $this->refreshStorages();
+        $this->name = $this->generateDefaultVolumeName();
     }
 
     public function refreshStoragesFromEvent()
@@ -202,7 +203,7 @@ class Storage extends Component
 
     public function clearForm()
     {
-        $this->name = '';
+        $this->name = $this->generateDefaultVolumeName();
         $this->mount_path = '';
         $this->host_path = null;
         $this->file_storage_path = '';
@@ -216,6 +217,14 @@ class Storage extends Component
         }
     }
 
+    private function generateDefaultVolumeName(): string
+    {
+        return str($this->resource->name ?? 'volume')
+            ->slug()
+            ->append('-data')
+            ->value();
+    }
+
     public function render()
     {
         return view('livewire.project.service.storage');