feat: Phase 2 - page CRUD, subscriber management, user management

app/Policies/UserPolicy.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\User;
+
+class UserPolicy
+{
+    public function viewAny(User $user): bool
+    {
+        return $user->isSuperadmin();
+    }
+
+    public function create(User $user): bool
+    {
+        return $user->isSuperadmin();
+    }
+
+    public function update(User $user, User $target): bool
+    {
+        return $user->isSuperadmin();
+    }
+
+    public function delete(User $user, User $target): bool
+    {
+        if (! $user->isSuperadmin()) {
+            return false;
+        }
+
+        return $user->id !== $target->id;
+    }
+}