add role permission logic

app/Services/Roles/RoleDashboardService.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Services\Roles;
+
+use App\Models\Role;
+
+class RoleDashboardService
+{
+    /** @param string[] $roleKeys */
+    public function bestDashboardRouteFor(array $roleKeys): string
+    {
+        $rows = Role::findByNamesOrSlugs($roleKeys);
+        if (!empty($rows)) {
+            return $rows[0]->dashboard_route ?? '/landing_page/guest_dashboard';
+        }
+
+        return '/landing_page/guest_dashboard';
+    }
+}