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.

tests/Feature/NavigationTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Enums\UserRole;
+use App\Models\User;
+use Tests\RefreshDatabase;
+use Tests\TestCase;
+
+class NavigationTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_home_page_renders_new_nav(): void
+    {
+        $this->get('/search')
+            ->assertOk()
+            ->assertSee('Browse')
+            ->assertSee('Playlists')
+            ->assertSeeHtml('id="toogleTheme"');
+    }
+
+    public function test_admin_layout_renders_for_admin(): void
+    {
+        $admin = User::factory()->create();
+        $admin->addRole(UserRole::ADMINISTRATOR);
+
+        $this->actingAs($admin)
+            ->get(route('admin.upload.index'))
+            ->assertOk();
+    }
+}