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/flyfinder/tests/unit/PathTest.php

@@ -0,0 +1,35 @@
+<?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      http://phpdoc.org
+ */
+
+namespace Flyfinder;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test case for Path
+ *
+ * @coversDefaultClass Flyfinder\Path
+ */
+class PathTest extends TestCase
+{
+    /**
+     * @covers ::__construct
+     * @covers ::__toString
+     */
+    public function testToString() : void
+    {
+        $path = new Path('/my/Path');
+
+        $this->assertSame('/my/Path', (string) $path);
+    }
+}