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-restructured-text/src/RestructuredText/Directives/TodoDirective.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link https://phpdoc.org
+ */
+
+namespace phpDocumentor\Guides\RestructuredText\Directives;
+
+use phpDocumentor\Guides\RestructuredText\Parser\BlockContext;
+use phpDocumentor\Guides\RestructuredText\Parser\Directive;
+
+/**
+ * Todo directives are treated as comments, omitting all content or options
+ */
+final class TodoDirective extends ActionDirective
+{
+    public function getName(): string
+    {
+        return 'todo';
+    }
+
+    public function processAction(BlockContext $blockContext, Directive $directive): void
+    {
+        // Todo directives are treated as comments
+    }
+}