test: add sanity check for roster rendering without Livewire helpers

tests/Feature/Roster/SanityCheck.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Tests\Feature\Roster;
+
+use App\Models\Mship\Account;
+use Tests\TestCase;
+
+class SanityCheck extends TestCase
+{
+    public function test_render_without_livewire_helpers(): void
+    {
+        $account = Account::factory()->create();
+        $response = $this->actingAs($account)->get('/roster');
+
+        $response->assertStatus(200);
+        $response->assertSee("Hello, $account->name_first!");
+    }
+}