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/reflection/tests/integration/Metadata/Hook.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace phpDocumentor\Reflection\Metadata;
+
+final class Hook implements Metadata
+{
+    private $hook;
+
+    public function __construct(string $hook)
+    {
+        $this->hook = $hook;
+    }
+
+    public function key(): string
+    {
+        return "project-metadata";
+    }
+
+    public function hook(): string
+    {
+        return $this->hook;
+    }
+}