Characters: add Aoife Fermwyr's sheet to app:character:seed

Halfling (Mark of Hospitality) paladin, Oath of the Ancients, level 2,
played by Gerdien. Read from photos of her printed sheet (Aoife_1-4),
which are committed alongside the other source sheets. Named "Aoife
Fermwyr" so the existing AoifeFermwyr.png portrait is picked up.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/Character/SeedCharactersCatalogTest.php

@@ -24,7 +24,7 @@ class SeedCharactersCatalogTest extends KernelTestCase
         $hydrate = new \ReflectionMethod($command, 'hydrate');
 
         $names = array_column($sheets, 'name');
-        self::assertSame(['Darragh Fermwyr', 'Owayn Fermwyr', 'Dunnchadh'], $names);
+        self::assertSame(['Darragh Fermwyr', 'Owayn Fermwyr', 'Dunnchadh', 'Aoife Fermwyr'], $names);
 
         foreach ($sheets as $row) {
             /** @var Character $c */