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/http-client/Internal/AmpResolver.php

@@ -0,0 +1,64 @@
+<?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\HttpClient\Internal;
+
+use Amp\Cancellation;
+use Amp\Dns;
+use Amp\Dns\DnsRecord;
+use Amp\Dns\DnsResolver;
+
+/**
+ * Handles local overrides for the DNS resolver.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class AmpResolver implements DnsResolver
+{
+    public function __construct(
+        private array &$dnsMap,
+    ) {
+    }
+
+    public function resolve(string $name, ?int $typeRestriction = null, ?Cancellation $cancellation = null): array
+    {
+        $recordType = DnsRecord::A;
+        $ip = $this->dnsMap[$name] ?? null;
+
+        if (null !== $ip && str_contains($ip, ':')) {
+            $recordType = DnsRecord::AAAA;
+        }
+
+        if (null === $ip || $recordType !== ($typeRestriction ?? $recordType)) {
+            return Dns\resolve($name, $typeRestriction, $cancellation);
+        }
+
+        return [new DnsRecord($ip, $recordType, null)];
+    }
+
+    public function query(string $name, int $type, ?Cancellation $cancellation = null): array
+    {
+        $recordType = DnsRecord::A;
+        $ip = $this->dnsMap[$name] ?? null;
+
+        if (null !== $ip && str_contains($ip, ':')) {
+            $recordType = DnsRecord::AAAA;
+        }
+
+        if (null !== $ip || $recordType !== $type) {
+            return Dns\resolve($name, $type, $cancellation);
+        }
+
+        return [new DnsRecord($ip, $recordType, null)];
+    }
+}