fix(mcp): support mcp/sdk 0.6 ResourceDefinition in Loader (#8302)

Author: soyuka

phpstan.neon.dist

@@ -46,6 +46,11 @@ parameters:
 		-
 			message: '#Symfony\\Component\\PropertyInfo\\Type#'
 			identifier: class.notFound
+		# mcp/sdk 0.6 renamed Mcp\Schema\Resource to ResourceDefinition; Loader resolves at runtime, only one exists per installed version
+		-
+			message: '#class Mcp\\Schema\\(Resource|ResourceDefinition) not found#'
+			identifier: class.notFound
+			path: src/Mcp/Capability/Registry/Loader.php
 		# False positives
 		-   message: '#Call to an undefined method Negotiation\\AcceptHeader::getType\(\).#'
 		-

src/Mcp/Capability/Registry/Loader.php

@@ -24,6 +24,7 @@
 use Mcp\Capability\RegistryInterface;
 use Mcp\Schema\Annotations;
 use Mcp\Schema\Resource;
+use Mcp\Schema\ResourceDefinition;
 use Mcp\Schema\Tool;
 use Mcp\Schema\ToolAnnotations;
 
@@ -77,8 +78,10 @@ public function load(RegistryInterface $registry): void
                     }
 
                     if ($mcp instanceof McpResource) {
+                        // mcp/sdk 0.6 renamed Mcp\Schema\Resource to ResourceDefinition; support both while symfony/mcp-bundle still pins ^0.5
+                        $resourceClass = class_exists(ResourceDefinition::class) ? ResourceDefinition::class : Resource::class;
                         $registry->registerResource(
-                            new Resource(
+                            new $resourceClass(
                                 uri: $mcp->getUri(),
                                 name: $mcp->getName(),
                                 description: $mcp->getDescription(),