Add title parameter to Builder::addResource() and addResourceTemplate() (#310)

#301 added the `title` field to the `Resource`/`ResourceTemplate` schema
classes and the `McpResource`/`McpResourceTemplate` attributes, but the
manual registration methods on `Builder` were never updated — so manual
registration could not set a resource title, unlike tools and prompts.

Add a `$title` parameter between `$name` and `$description` (matching
`addTool()`/`addPrompt()`) and propagate it through `ArrayLoader` when
constructing the `Resource`/`ResourceTemplate` objects.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Unit/Capability/Registry/Loader/ArrayLoaderResourceTitleTest.php

@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of the official PHP MCP SDK.
+ *
+ * A collaboration between Symfony and the PHP Foundation.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Mcp\Tests\Unit\Capability\Registry\Loader;
+
+use Mcp\Capability\Registry;
+use Mcp\Capability\Registry\Loader\ArrayLoader;
+use PHPUnit\Framework\TestCase;
+
+class ArrayLoaderResourceTitleTest extends TestCase
+{
+    public function testLoadPropagatesResourceTitleToRegisteredResource(): void
+    {
+        $resources = [
+            [
+                'handler' => static fn (): string => 'ok',
+                'uri' => 'config://app/settings',
+                'name' => 'app_settings',
+                'title' => 'Application Settings',
+                'description' => null,
+                'mimeType' => null,
+                'size' => null,
+                'annotations' => null,
+                'icons' => null,
+                'meta' => null,
+            ],
+        ];
+
+        $loader = new ArrayLoader([], $resources);
+        $registry = new Registry();
+
+        $loader->load($registry);
+
+        $resourceRef = $registry->getResource('config://app/settings');
+        $this->assertSame('Application Settings', $resourceRef->resource->title);
+    }
+
+    public function testLoadPropagatesResourceTemplateTitleToRegisteredTemplate(): void
+    {
+        $resourceTemplates = [
+            [
+                'handler' => static fn (): string => 'ok',
+                'uriTemplate' => 'user://{userId}/profile',
+                'name' => 'user_profile',
+                'title' => 'User Profile',
+                'description' => null,
+                'mimeType' => null,
+                'annotations' => null,
+                'meta' => null,
+            ],
+        ];
+
+        $loader = new ArrayLoader([], [], $resourceTemplates);
+        $registry = new Registry();
+
+        $loader->load($registry);
+
+        $templateRef = $registry->getResourceTemplate('user://{userId}/profile');
+        $this->assertSame('User Profile', $templateRef->resourceTemplate->title);
+    }
+}