Refactor templates and add search functionality with improved navigation and user experience

templates/fragments/_link_fragment.html

@@ -0,0 +1,11 @@
+{% macro category_link(endpoint, label, icon_html=None, arguments={}) %}
+<div class="col">
+    <a href="{{ url_for('main.' + endpoint, **arguments) }}"
+        class="d-flex flex-column justify-content-center link-success link-underline-opacity-0">
+        {% if icon_html %}
+            {{ icon_html | safe }}
+        {% endif %}
+        {{ label }}
+    </a>
+</div>
+{% endmacro %}