Add toggleable wire:navigate SPA navigation with prefetching

Implement instance-wide SPA navigation toggle that enables smooth page transitions with prefetching on hover. Excludes terminal links which require full page lifecycle for WebSocket connections. Adds defensive checks to global-search component for SPA navigation compatibility.

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

resources/views/errors/503.blade.php

@@ -8,10 +8,10 @@
             patience.
         </p>
         <div class="flex items-center mt-10 gap-x-2">
-            <a href="{{ url()->previous() }}">
+            <a href="{{ url()->previous() }}" {{ wireNavigate() }}>
                 <x-forms.button>Go back</x-forms.button>
             </a>
-            <a href="{{ route('dashboard') }}">
+            <a href="{{ route('dashboard') }}" {{ wireNavigate() }}>
                 <x-forms.button>Dashboard</x-forms.button>
             </a>
             <a target="_blank" class="text-xs" href="{{ config('constants.urls.contact') }}">Contact