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/symfony/dependency-injection/Loader/Configurator/ServiceConfigurator.php

@@ -0,0 +1,74 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Definition;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ServiceConfigurator extends AbstractServiceConfigurator
+{
+    use Traits\AbstractTrait;
+    use Traits\ArgumentTrait;
+    use Traits\AutoconfigureTrait;
+    use Traits\AutowireTrait;
+    use Traits\BindTrait;
+    use Traits\CallTrait;
+    use Traits\ClassTrait;
+    use Traits\ConfiguratorTrait;
+    use Traits\ConstructorTrait;
+    use Traits\DecorateTrait;
+    use Traits\DeprecateTrait;
+    use Traits\FactoryTrait;
+    use Traits\FileTrait;
+    use Traits\FromCallableTrait;
+    use Traits\LazyTrait;
+    use Traits\ParentTrait;
+    use Traits\PropertyTrait;
+    use Traits\PublicTrait;
+    use Traits\ShareTrait;
+    use Traits\SyntheticTrait;
+    use Traits\TagTrait;
+
+    public const FACTORY = 'services';
+
+    private ContainerBuilder $container;
+    private array $instanceof;
+    private bool $allowParent;
+    private ?string $path;
+    private bool $destructed = false;
+
+    public function __construct(ContainerBuilder $container, array $instanceof, bool $allowParent, ServicesConfigurator $parent, Definition $definition, ?string $id, array $defaultTags, ?string $path = null)
+    {
+        $this->container = $container;
+        $this->instanceof = $instanceof;
+        $this->allowParent = $allowParent;
+        $this->path = $path;
+
+        parent::__construct($parent, $definition, $id, $defaultTags);
+    }
+
+    public function __destruct()
+    {
+        if ($this->destructed) {
+            return;
+        }
+        $this->destructed = true;
+
+        parent::__destruct();
+
+        $this->container->removeBindings($this->id);
+        $this->container->setDefinition($this->id, $this->definition->setInstanceofConditionals($this->instanceof));
+    }
+}