Replace Laravel scaffold logo with a finance-themed mark

The app still shipped the default Laravel cube icon. New mark is a
coin outline crossed by a rising trend line — ties the app's subject
(money) to its purpose (tracking growth over time). Stroke-based
single-color design inherits currentColor from the caller's text-*
class, so it drops into the existing light/dark tokens without a
separate variant.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

resources/views/livewire/layout/navigation.blade.php

@@ -24,7 +24,7 @@ new class extends Component
                 <!-- Logo -->
                 <div class="shrink-0 flex items-center">
                     <a href="{{ route('dashboard') }}" wire:navigate aria-label="{{ config('app.name', 'Laravel') }} — Tableau de bord" class="rounded-md focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:ring-offset-surface">
-                        <x-application-logo class="block h-9 w-auto fill-current text-text" />
+                        <x-application-logo class="block h-9 w-auto text-text" />
                     </a>
                 </div>