fix: close out remaining German player-facing text across web and API tests

Repo-wide grep sweep (apps/web/src, apps/api/src) for leftover German
content strings missed by Tasks 1-9, mostly in spec fixtures/assertions
that mirror already-translated seed content (monster/item names, POI
titles and action labels, location names/descriptions) plus a few real
source-file gaps:

- inventory-detail-panel.component.ts: STAT_LABELS (Waffenschaden,
  Angriff, Leben, Rüstung) were never translated by Task 6; now match
  the identical English labels already used in inventory-page.component.html.
- app-shell.component.html: aria-label="Spielinhalt" -> "Game content"
  (this file was outside every prior task's file list).
- location-interaction-panel.component.spec.ts: dead NPC-quote fixture
  translated to match the real wounded-scout POI text.

Code comments referencing German source-spec section titles or
not-yet-seeded faction names, and inline calculation-documentation
comments, are left as-is per the source spec's scope (dev-facing
comments may stay German).

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

apps/api/src/inventory/inventory.service.spec.ts

@@ -18,8 +18,8 @@ function characterItem(overrides: Partial<CharacterItem> = {}): CharacterItem {
     updatedAt: new Date('2026-08-18T09:00:00.000Z'),
     itemDefinition: {
       key: 'worn-short-sword',
-      name: 'Abgenutztes Kurzschwert',
-      description: 'Die Klinge eines Rekruten, öfter geschliffen als geführt.',
+      name: 'Worn Shortsword',
+      description: "A recruit's blade, sharpened more often than it's been swung.",
       rarity: ItemRarity.COMMON,
       type: ItemType.EQUIPMENT,
       equipmentSlot: EquipmentSlot.WEAPON,
@@ -66,8 +66,8 @@ describe('InventoryService', () => {
         equipped: true,
         item: {
           key: 'worn-short-sword',
-          name: 'Abgenutztes Kurzschwert',
-          description: 'Die Klinge eines Rekruten, öfter geschliffen als geführt.',
+          name: 'Worn Shortsword',
+          description: "A recruit's blade, sharpened more often than it's been swung.",
           rarity: 'COMMON',
           equipmentSlot: 'WEAPON',
           weaponDamage: 8,