Add wallet balance widget to the profile menu (after Billing)

Wallet balance peek rendered as a menu row directly under Billing, backed by
a /wallet/balance endpoint (BillingClient) and guarded by Route::has. Also
opens Afia via a direct window event for reliability.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

resources/views/partials/topbar.blade.php

@@ -51,7 +51,7 @@
         <div class="relative hidden w-full max-w-md lg:block" x-data="topbarSearch()" @click.outside="open = false" @keydown.escape.window="open = false">
             <div class="relative">
                 <svg class="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-slate-400" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="m21 21-5.197-5.197m0 0A7.5 7.5 0 1 0 5.196 5.196a7.5 7.5 0 0 0 10.607 10.607Z"/></svg>
-                <input type="text"
+                <input data-ladill-search-input  type="text"
                        x-model="query"
                        @focus="onFocus()"
                        @input.debounce.200ms="search()"
@@ -255,7 +255,7 @@
             </button>
 
                             <div x-show="profileOpen" x-cloak x-transition @click.outside="profileOpen = false"
-                     class="absolute right-0 z-50 mt-2 w-56 rounded-xl border border-slate-200 bg-white shadow-lg">
+                     class="absolute right-0 z-50 mt-2 w-64 rounded-xl border border-slate-200 bg-white shadow-lg">
                     @include('partials.user-profile-menu', [
                         'items' => \App\Support\UserProfileMenu::items($user),
                     ])