feat: add cloud-init scripts to global search

Add cloud-init scripts to the global search navigation routes, making
them discoverable via the quick search (Cmd+K / Ctrl+K).

Changes:
- Added dedicated "Cloud-Init Scripts" navigation entry
- Searchable via: cloud-init, scripts, cloud init, cloudinit,
  initialization, startup, server setup
- Updated Security entry to include cloud-init in search terms
- Links to /security/cloud-init-scripts route

Users can now quickly navigate to cloud-init script management by
typing "cloud-init" or related terms in global search.

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

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

app/Livewire/GlobalSearch.php

@@ -617,7 +617,14 @@ private function loadSearchableItems()
                     'type' => 'navigation',
                     'description' => 'Manage private keys and API tokens',
                     'link' => route('security.private-key.index'),
-                    'search_text' => 'security private keys ssh api tokens',
+                    'search_text' => 'security private keys ssh api tokens cloud-init scripts',
+                ],
+                [
+                    'name' => 'Cloud-Init Scripts',
+                    'type' => 'navigation',
+                    'description' => 'Manage reusable cloud-init scripts',
+                    'link' => route('security.cloud-init-scripts'),
+                    'search_text' => 'cloud-init scripts cloud init cloudinit initialization startup server setup',
                 ],
                 [
                     'name' => 'Sources',