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/combat/combat.service.spec.ts

@@ -193,7 +193,7 @@ function monster(
   return {
     id: MONSTER_ID,
     key: 'ash-rat',
-    name: 'Aschenratte',
+    name: 'Ash Rat',
     level: 1,
     maxHp: 45,
     attack: 5,
@@ -334,7 +334,7 @@ describe('CombatService', () => {
       });
       expect(combat.monster).toEqual({
         key: 'ash-rat',
-        name: 'Aschenratte',
+        name: 'Ash Rat',
         level: 1,
         maxHp: 45,
         currentHp: 45,
@@ -1016,7 +1016,7 @@ describe('CombatService', () => {
             characterItemId: 'character-item-1',
             item: {
               key: 'bandit-blade',
-              name: 'Räuberklinge',
+              name: 'Bandit Blade',
               rarity: 'COMMON',
               iconPath: '/images/items/bandit-blade.png',
             },