feat(nav): redesign navigation bar and add Browse/Community links

Enhance the navigation with a modern floating glass design, new Browse and Community dropdown links, and improved theme/blur toggles that now handle multiple instances. Update dropdown components with rounded styling and support for wider widths, refine nav-link active states, and add navigation feature tests.

resources/views/components/dropdown.blade.php

@@ -1,4 +1,4 @@
-@props(['align' => 'right', 'width' => '48', 'contentClasses' => 'py-1 bg-white dark:bg-neutral-800'])
+@props(['align' => 'right', 'width' => '48', 'contentClasses' => 'p-2 rounded-2xl border border-gray-200/70 dark:border-white/10 bg-white/95 dark:bg-neutral-900/80 backdrop-blur-2xl shadow-2xl shadow-black/10 dark:shadow-black/50'])
 
 @php
 $alignmentClasses = match ($align) {
@@ -9,6 +9,9 @@ $alignmentClasses = match ($align) {
 
 $width = match ($width) {
     '48' => 'w-48',
+    '56' => 'w-56',
+    '64' => 'w-64',
+    '72' => 'w-72',
     default => $width,
 };
 @endphp
@@ -25,10 +28,10 @@ $width = match ($width) {
             x-transition:leave="transition ease-in duration-75"
             x-transition:leave-start="opacity-100 scale-100"
             x-transition:leave-end="opacity-0 scale-95"
-            class="absolute z-50 mt-2 {{ $width }} rounded-md shadow-lg {{ $alignmentClasses }}"
+            class="absolute z-50 mt-2 {{ $width }} rounded-2xl shadow-lg {{ $alignmentClasses }}"
             style="display: none;"
             @click="open = false">
-        <div class="rounded-md ring-1 ring-black ring-opacity-5 {{ $contentClasses }}">
+        <div class="rounded-2xl ring-1 ring-black/5 {{ $contentClasses }}">
             {{ $content }}
         </div>
     </div>