Use custom Result/Option types

src/util/refresh.php

@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Result;
 use BitBadger\PDODocument\{DocumentException, Find};
 use FeedReaderCentral\{Feed, Table, User};
 
@@ -51,9 +52,9 @@ function refresh_all(): void
                 $users[$userKey] = Find::byId(Table::User, $feed->user_id, User::class)
                     ->getOrElse(new User(email: 'user-not-found'));
             }
-            if ($result->error()->isDefined()) {
+            if (Result::isError($result)) {
                 printfn('ERR (%s) %s', $users[$userKey]->email, $feed->url);
-                printfn('         %s', $result->error()->get());
+                printfn('         %s', $result->getError());
             } else {
                 printfn('OK  (%s) %s', $users[$userKey]->email, $feed->url);
             }