fix(test): translate the remaining Worn Shortsword and Padded Helm fixture names

Task 10 review sweep found two German strings the closing sweep missed:
'Abgenutztes Kurzschwert' (8 occurrences across 5 spec files, the real
seeded worn-short-sword item) and 'Gepolsterter Helm' (1 occurrence, a
synthetic test-only bonus-hp-helm fixture). Translated both to their
English equivalents per the item-content.ts glossary and slice style.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ACkMEDYiwtcfchqKkiUJNX

apps/web/src/app/features/inventory/inventory-detail-panel.component.spec.ts

@@ -9,7 +9,7 @@ const wornSword: InventoryItem = {
   equipped: true,
   item: {
     key: 'worn-short-sword',
-    name: 'Abgenutztes Kurzschwert',
+    name: 'Worn Shortsword',
     description: 'Item description.',
     rarity: 'COMMON',
     equipmentSlot: 'WEAPON',