Replace counter-arguments with possible answers and unify search inputs.

Models, AI assistant, and UI now show diskussionsfertige Antworten without titles; shared search partial fixes aria-label rendering.

Co-authored-by: Cursor <cursoragent@cursor.com>

templates/claims/partials/search_input.html

@@ -0,0 +1,12 @@
+<div class="input-group fk-search">
+    <span class="input-group-text border-end-0"><i class="bi bi-search" aria-hidden="true"></i></span>
+    <input type="search"
+           name="{{ name|default:'q' }}"
+           {% if id %}id="{{ id }}"{% else %}id="q"{% endif %}
+           class="form-control fk-search-input border-start-0 ps-0"
+           placeholder="{{ placeholder|default:'Suchen…' }}"
+           value="{{ value|default:'' }}"
+           {% if autofocus %}autofocus{% endif %}
+           autocomplete="off"
+           aria-label="{% firstof aria_label placeholder 'Suchen' %}">
+</div>