Restyle category tree to idiomatic Bootstrap list-group pattern (v0.1.8)

Switch from custom link classes to Bootstrap's native list-group-item-action
pattern. Replace bold primary-colored active background with subtle tertiary
background, left accent border, and semibold text.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

templates/global/category-tree-node.html.twig

@@ -1,8 +1,8 @@
 {#
  # Single Category Tree Node (recursive)
  #
- # Renders one category with optional collapsible children.
- # Included recursively by category-tree.html.twig.
+ # Renders one category as a list-group-item-action link with optional
+ # collapsible nested list for children. Included recursively.
  #
  # Expected context:
  #   node  - Category node from wc_bootstrap_get_category_tree()
@@ -12,22 +12,24 @@
  # @since 0.1.7
  #}
 
-<li class="list-group-item px-0 py-1 border-0">
+{% set has_children = node.children is not empty %}
+{% set is_open = node.is_active or node.is_ancestor %}
+
+<div class="category-tree-item">
     <div class="d-flex align-items-center">
         <a href="{{ node.url }}"
-           class="category-tree-link d-block text-decoration-none py-1 px-2 rounded flex-grow-1{% if node.is_active %} active fw-semibold{% endif %}"
+           class="list-group-item list-group-item-action border-0 py-1 flex-grow-1{% if node.is_active %} active{% endif %}"
+           style="padding-left: {{ 0.5 + (level - 1) * 1 }}rem;"
            {% if node.is_active %}aria-current="page"{% endif %}>
-            <span class="ps-{{ (level - 1) * 2 }}">
-                {{ node.name }}
-            </span>
-            <span class="badge bg-body-secondary text-body-secondary rounded-pill ms-1 small">{{ node.count }}</span>
+            {{ node.name }}
+            <small class="text-body-secondary ms-1">({{ node.count }})</small>
         </a>
-        {% if node.children is not empty %}
-            <button class="btn btn-sm btn-link text-body-secondary p-0 ms-1 category-tree-toggle"
+        {% if has_children %}
+            <button class="btn btn-sm btn-link text-body-secondary p-0 px-2 category-tree-toggle"
                     type="button"
                     data-bs-toggle="collapse"
                     data-bs-target="#cat-{{ node.term_id }}"
-                    aria-expanded="{{ node.is_active or node.is_ancestor ? 'true' : 'false' }}"
+                    aria-expanded="{{ is_open ? 'true' : 'false' }}"
                     aria-controls="cat-{{ node.term_id }}"
                     aria-label="{{ __('Toggle subcategories', 'wc-bootstrap') }}">
                 <i class="bi bi-chevron-down small" aria-hidden="true"></i>
@@ -35,12 +37,11 @@
         {% endif %}
     </div>
 
-    {% if node.children is not empty %}
-        <ul class="list-group list-group-flush collapse{{ node.is_active or node.is_ancestor ? ' show' : '' }}"
-            id="cat-{{ node.term_id }}">
+    {% if has_children %}
+        <div class="collapse{{ is_open ? ' show' : '' }}" id="cat-{{ node.term_id }}">
             {% for child in node.children %}
                 {% include 'global/category-tree-node.html.twig' with { node: child, level: level + 1 } only %}
             {% endfor %}
-        </ul>
+        </div>
     {% endif %}
-</li>
+</div>

templates/global/category-tree.html.twig

@@ -1,13 +1,13 @@
 {#
  # Product Category Tree (Bootstrap 5)
  #
- # Renders a hierarchical product category navigation with collapsible
- # sub-levels, up to 3 levels deep. Uses Bootstrap 5 list-group and
- # collapse components for responsive tree navigation.
+ # Renders a hierarchical product category navigation using Bootstrap
+ # list-group with nested sub-lists and action links.
  #
  # Expected context:
- #   categories - Hierarchical array from wc_bootstrap_get_category_tree()
- #   shop_url   - URL to the main shop page
+ #   categories  - Hierarchical array from wc_bootstrap_get_category_tree()
+ #   shop_url    - URL to the main shop page
+ #   current_cat - Term ID of the currently viewed category (0 = shop page)
  #
  # @package WcBootstrap
  # @since 0.1.7
@@ -19,16 +19,14 @@
         {{ __('Categories', 'wc-bootstrap') }}
     </h3>
 
-    <ul class="list-group list-group-flush category-tree">
-        <li class="list-group-item px-0 py-1">
-            <a href="{{ shop_url }}"
-               class="category-tree-link d-block text-decoration-none py-1 px-2 rounded{% if current_cat == 0 %} active fw-semibold{% endif %}">
-                {{ __('All products', 'wc-bootstrap') }}
-            </a>
-        </li>
+    <div class="list-group list-group-flush category-tree">
+        <a href="{{ shop_url }}"
+           class="list-group-item list-group-item-action border-0 px-2 py-1{% if current_cat == 0 %} active{% endif %}">
+            {{ __('All products', 'wc-bootstrap') }}
+        </a>
         {% for cat in categories %}
             {% include 'global/category-tree-node.html.twig' with { node: cat, level: 1 } only %}
         {% endfor %}
-    </ul>
+    </div>
 </nav>
 {% endif %}