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/Traits/BindTrait.php

@@ -0,0 +1,42 @@
+<?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\Traits;
+
+use Symfony\Component\DependencyInjection\Argument\BoundArgument;
+use Symfony\Component\DependencyInjection\Loader\Configurator\DefaultsConfigurator;
+use Symfony\Component\DependencyInjection\Loader\Configurator\InstanceofConfigurator;
+
+trait BindTrait
+{
+    /**
+     * Sets bindings.
+     *
+     * Bindings map $named or FQCN arguments to values that should be
+     * injected in the matching parameters (of the constructor, of methods
+     * called and of controller actions).
+     *
+     * @param string $nameOrFqcn A parameter name with its "$" prefix, or an FQCN
+     * @param mixed  $valueOrRef The value or reference to bind
+     *
+     * @return $this
+     */
+    final public function bind(string $nameOrFqcn, mixed $valueOrRef): static
+    {
+        $valueOrRef = static::processValue($valueOrRef, true);
+        $bindings = $this->definition->getBindings();
+        $type = $this instanceof DefaultsConfigurator ? BoundArgument::DEFAULTS_BINDING : ($this instanceof InstanceofConfigurator ? BoundArgument::INSTANCEOF_BINDING : BoundArgument::SERVICE_BINDING);
+        $bindings[$nameOrFqcn] = new BoundArgument($valueOrRef, true, $type, $this->path ?? null);
+        $this->definition->setBindings($bindings);
+
+        return $this;
+    }
+}