feat: added text search for title and description

ticketsystem/templates/ticketsystem/index.html

@@ -59,6 +59,18 @@
         <option value="closed" {% if selected_status == "closed" %}selected{% endif %}>Erledigt</option>
       </select>
     </form>
+      <form method="get" style="margin-bottom: 1.5rem;">
+          <input type="text" name="q" placeholder="🔍 Suche nach Titel oder Beschreibung"
+                 value="{{ search_query }}" style="padding: 0.4rem; width: 60%; max-width: 300px;">
+          {% if selected_status %}
+          <input type="hidden" name="status" value="{{ selected_status }}">
+          {% endif %}
+          <button type="submit">Suchen</button>
+      </form>
+
+      {% if search_query %}
+  <p>Ergebnisse für „<strong>{{ search_query }}</strong>“:</p>
+{% endif %}
 
     {% for ticket in tickets %}
       <div class="ticket-item">