v0.1.1 - Bootstrap frontend rendering via Twig templates

Replace FSE block markup on the frontend with proper Bootstrap 5 HTML
rendered through Twig templates. The Site Editor remains functional for
admin editing while the public site outputs Bootstrap navbar, cards,
pagination, grid layout, and responsive components.

New PHP classes: TemplateController, ContextBuilder, NavWalker
New Twig templates: 20 files (base, pages, partials, components)
Enhanced TwigService with WordPress functions and globals

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

views/partials/footer.html.twig

@@ -0,0 +1,34 @@
+<footer class="bg-body-tertiary mt-auto">
+    <div class="container py-5">
+        <div class="row">
+            <div class="col-md-6">
+                <h5 class="fw-bold">{{ site.name }}</h5>
+                <p class="text-body-secondary">{{ site.description }}</p>
+            </div>
+            <div class="col-md-6 text-md-end">
+                {% if footer_menu|length > 0 %}
+                    <ul class="list-unstyled">
+                        {% for item in footer_menu %}
+                            <li>
+                                <a href="{{ item.url }}" class="text-body-secondary text-decoration-none">
+                                    {{ item.title }}
+                                </a>
+                            </li>
+                        {% endfor %}
+                    </ul>
+                {% endif %}
+            </div>
+        </div>
+        <hr>
+        <div class="row align-items-center">
+            <div class="col-md-6">
+                <p class="text-body-secondary small mb-0">&copy; {{ current_year }} {{ site.name }}</p>
+            </div>
+            <div class="col-md-6 text-md-end">
+                <p class="text-body-secondary small mb-0">
+                    {{ __('Powered by %s')|format('<a href="https://wordpress.org" rel="nofollow" class="text-body-secondary">WordPress</a>')|raw }}
+                </p>
+            </div>
+        </div>
+    </div>
+</footer>