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/console/ConsoleEvents.php

@@ -0,0 +1,72 @@
+<?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\Console;
+
+use Symfony\Component\Console\Event\ConsoleCommandEvent;
+use Symfony\Component\Console\Event\ConsoleErrorEvent;
+use Symfony\Component\Console\Event\ConsoleSignalEvent;
+use Symfony\Component\Console\Event\ConsoleTerminateEvent;
+
+/**
+ * Contains all events dispatched by an Application.
+ *
+ * @author Francesco Levorato <git@flevour.net>
+ */
+final class ConsoleEvents
+{
+    /**
+     * The COMMAND event allows you to attach listeners before any command is
+     * executed by the console. It also allows you to modify the command, input and output
+     * before they are handed to the command.
+     *
+     * @Event("Symfony\Component\Console\Event\ConsoleCommandEvent")
+     */
+    public const COMMAND = 'console.command';
+
+    /**
+     * The SIGNAL event allows you to perform some actions
+     * after the command execution was interrupted.
+     *
+     * @Event("Symfony\Component\Console\Event\ConsoleSignalEvent")
+     */
+    public const SIGNAL = 'console.signal';
+
+    /**
+     * The TERMINATE event allows you to attach listeners after a command is
+     * executed by the console.
+     *
+     * @Event("Symfony\Component\Console\Event\ConsoleTerminateEvent")
+     */
+    public const TERMINATE = 'console.terminate';
+
+    /**
+     * The ERROR event occurs when an uncaught exception or error appears.
+     *
+     * This event allows you to deal with the exception/error or
+     * to modify the thrown exception.
+     *
+     * @Event("Symfony\Component\Console\Event\ConsoleErrorEvent")
+     */
+    public const ERROR = 'console.error';
+
+    /**
+     * Event aliases.
+     *
+     * These aliases can be consumed by RegisterListenersPass.
+     */
+    public const ALIASES = [
+        ConsoleCommandEvent::class => self::COMMAND,
+        ConsoleErrorEvent::class => self::ERROR,
+        ConsoleSignalEvent::class => self::SIGNAL,
+        ConsoleTerminateEvent::class => self::TERMINATE,
+    ];
+}