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/routing/Generator/CompiledUrlGenerator.php

@@ -0,0 +1,69 @@
+<?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\Routing\Generator;
+
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Routing\Exception\RouteNotFoundException;
+use Symfony\Component\Routing\RequestContext;
+
+/**
+ * Generates URLs based on rules dumped by CompiledUrlGeneratorDumper.
+ */
+class CompiledUrlGenerator extends UrlGenerator
+{
+    private array $compiledRoutes = [];
+    private ?string $defaultLocale;
+
+    public function __construct(array $compiledRoutes, RequestContext $context, ?LoggerInterface $logger = null, ?string $defaultLocale = null)
+    {
+        $this->compiledRoutes = $compiledRoutes;
+        $this->context = $context;
+        $this->logger = $logger;
+        $this->defaultLocale = $defaultLocale;
+    }
+
+    public function generate(string $name, array $parameters = [], int $referenceType = self::ABSOLUTE_PATH): string
+    {
+        $locale = $parameters['_locale']
+            ?? $this->context->getParameter('_locale')
+            ?: $this->defaultLocale;
+
+        if (null !== $locale) {
+            do {
+                if (($this->compiledRoutes[$name.'.'.$locale][1]['_canonical_route'] ?? null) === $name) {
+                    $name .= '.'.$locale;
+                    break;
+                }
+            } while (false !== $locale = strstr($locale, '_', true));
+        }
+
+        if (!isset($this->compiledRoutes[$name])) {
+            throw new RouteNotFoundException(\sprintf('Unable to generate a URL for the named route "%s" as such route does not exist.', $name));
+        }
+
+        [$variables, $defaults, $requirements, $tokens, $hostTokens, $requiredSchemes, $deprecations] = $this->compiledRoutes[$name] + [6 => []];
+
+        foreach ($deprecations as $deprecation) {
+            trigger_deprecation($deprecation['package'], $deprecation['version'], $deprecation['message']);
+        }
+
+        if (isset($defaults['_canonical_route']) && isset($defaults['_locale'])) {
+            if (!\in_array('_locale', $variables, true)) {
+                unset($parameters['_locale']);
+            } elseif (!isset($parameters['_locale'])) {
+                $parameters['_locale'] = $defaults['_locale'];
+            }
+        }
+
+        return $this->doGenerate($variables, $defaults, $requirements, $tokens, $parameters, $name, $referenceType, $hostTokens, $requiredSchemes);
+    }
+}