refactor: Cleanup git state - commit all staged changes

Major refactoring cleanup:
- Add new controller architecture (class-controller-*.php)
- Add new settings-v2 UI (views/settings-v2/)
- Add new CSS architecture (agentic-sidebar.css, tokens)
- Add esbuild build pipeline (scripts/build.js, package.json)
- Add composer dependencies (vendor/)
- Add frontend src directory (assets/js/src/index.jsx)
- Add documentation files
- Remove old/obsolete files (class-settings.php, old CSS)

This commits all pending changes from previous refactoring efforts.

vendor/phpdocumentor/guides-graphs/resources/config/guides-graphs.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+use phpDocumentor\Guides\Graphs\Directives\UmlDirective;
+use phpDocumentor\Guides\Graphs\Nodes\UmlNode;
+use phpDocumentor\Guides\Graphs\Renderer\DiagramRenderer;
+use phpDocumentor\Guides\Graphs\Renderer\PlantumlRenderer;
+use phpDocumentor\Guides\Graphs\Renderer\PlantumlServerRenderer;
+use phpDocumentor\Guides\Graphs\Renderer\TestRenderer;
+use phpDocumentor\Guides\Graphs\Twig\UmlExtension;
+use phpDocumentor\Guides\NodeRenderers\TemplateNodeRenderer;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+use function Symfony\Component\DependencyInjection\Loader\Configurator\param;
+use function Symfony\Component\DependencyInjection\Loader\Configurator\tagged_iterator;
+
+return static function (ContainerConfigurator $container): void {
+    $container->services()
+        ->defaults()
+        ->autowire()
+        ->autoconfigure()
+        ->set(UmlDirective::class)
+        ->tag('phpdoc.guides.directive')
+
+        ->set('phpdoc.guides.', TemplateNodeRenderer::class)
+        ->tag('phpdoc.guides.noderenderer.html')
+        ->arg('$template', 'body/uml.html.twig')
+        ->arg('$nodeClass', UmlNode::class)
+
+        ->set(PlantumlRenderer::class)
+        ->arg('$plantUmlBinaryPath', '%guides.graphs.plantuml_binary%')
+        ->tag('phpdoc.guides.graph.renderer', ['alias' => 'plantuml'])
+
+        ->set(TestRenderer::class)
+        ->tag('phpdoc.guides.graph.renderer', ['alias' => 'testrender'])
+
+        ->set(PlantumlServerRenderer::class)
+        ->arg(
+            '$plantumlServerUrl',
+            '%guides.graphs.plantuml_server%',
+        )
+        ->tag('phpdoc.guides.graph.renderer', ['alias' => 'plantuml-server'])
+        ->alias(DiagramRenderer::class, PlantumlServerRenderer::class)
+
+        ->set(UmlExtension::class)
+        ->arg('$renderers', tagged_iterator('phpdoc.guides.graph.renderer', 'alias'))
+        ->arg('$rendererAlias', param('guides.graphs.renderer'))
+        ->tag('twig.extension');
+};

vendor/phpdocumentor/guides-graphs/resources/template/html/body/uml.html.twig

@@ -0,0 +1,8 @@
+<figure class="uml-diagram{% if node.classesString %} {{ node.classesString }}{% endif %}"
+    {%- if node.hasOption('width') %} style="width: {{ node.option('width') }}"{% endif -%}
+>
+    {{ uml(node.value) }}
+    {% if node.caption %}
+    <figcaption>{{ node.caption }}</figcaption>
+    {% endif %}
+</figure>