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/property-info/PropertyReadInfo.php

@@ -0,0 +1,70 @@
+<?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\PropertyInfo;
+
+/**
+ * The property read info tells how a property can be read.
+ *
+ * @author Joel Wurtz <jwurtz@jolicode.com>
+ */
+final class PropertyReadInfo
+{
+    public const TYPE_METHOD = 'method';
+    public const TYPE_PROPERTY = 'property';
+
+    public const VISIBILITY_PUBLIC = 'public';
+    public const VISIBILITY_PROTECTED = 'protected';
+    public const VISIBILITY_PRIVATE = 'private';
+
+    public function __construct(
+        private readonly string $type,
+        private readonly string $name,
+        private readonly string $visibility,
+        private readonly bool $static,
+        private readonly bool $byRef,
+    ) {
+    }
+
+    /**
+     * Get type of access.
+     */
+    public function getType(): string
+    {
+        return $this->type;
+    }
+
+    /**
+     * Get name of the access, which can be a method name or a property name, depending on the type.
+     */
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function getVisibility(): string
+    {
+        return $this->visibility;
+    }
+
+    public function isStatic(): bool
+    {
+        return $this->static;
+    }
+
+    /**
+     * Whether this accessor can be accessed by reference.
+     */
+    public function canBeReference(): bool
+    {
+        return $this->byRef;
+    }
+}