Characters: add Ruadhri's sheet to app:character:seed

Stout halfling cleric, level 2, Hermit, played by Adriaan. His sheet is
still sparse (no domain, level 1 spells, features or personality yet),
so this is what's on it so far. AC 16 reads the sheet's "14+2" as scale
mail plus a shield that isn't on the equipment list yet.

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', 'Aoife Fermwyr'], $names);
+        self::assertSame(['Darragh Fermwyr', 'Owayn Fermwyr', 'Dunnchadh', 'Aoife Fermwyr', 'Ruadhri'], $names);
 
         foreach ($sheets as $row) {
             /** @var Character $c */