feat(items): add German product names for in-store navigation

Each item now shows the German name (de field) below the Danish name
so it's easier to find products on shelves in Citti Flensburg.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/index.html

@@ -56,6 +56,7 @@
   .item-check input[type=checkbox] { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }
   .item-name { padding: 0.7rem 0.5rem; font-size: 14px; }
   .item-name .note { font-size: 11px; color: var(--muted); display: block; margin-top: 1px; }
+  .item-name .de { font-size: 10px; color: #b0aba3; display: block; margin-top: 0; font-style: italic; }
   .badge { display: inline-block; font-size: 9px; padding: 1px 5px; border-radius: 3px; margin-left: 5px; vertical-align: middle; font-weight: 500; }
   .badge-card { background: var(--blue-light); color: var(--blue); }
   .badge-kasse { background: var(--amber-light); color: var(--amber); }
@@ -229,6 +230,7 @@
       <div class="item-name">
         {{ item.name }}
         {% if item.get('badges') %}{% for b in item.badges %}{% if b == 'card' %}<span class="badge badge-card">CITTI CARD</span>{% endif %}{% if b == 'kasse' %}<span class="badge badge-kasse">Hel kasse</span>{% endif %}{% endfor %}{% endif %}
+        {% if item.get('de') %}<span class="de">🇩🇪 {{ item.de }}</span>{% endif %}
         {% if item.get('note') %}<span class="note">{{ item.note }}</span>{% endif %}
       </div>
       <div class="item-qty">