Adopt server examples

examples/04-combined-registration-http/DiscoveredElements.php

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+<?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\Example\CombinedHttpExample;
+
+use Mcp\Capability\Attribute\McpResource;
+use Mcp\Capability\Attribute\McpTool;
+
+class DiscoveredElements
+{
+    /**
+     * A tool discovered via attributes.
+     *
+     * @return string a status message
+     */
+    #[McpTool(name: 'discovered_status_check')]
+    public function checkSystemStatus(): string
+    {
+        return 'System status: OK (discovered)';
+    }
+
+    /**
+     * A resource discovered via attributes.
+     * This will be overridden by a manual registration with the same URI.
+     *
+     * @return string content
+     */
+    #[McpResource(uri: 'config://priority', name: 'priority_config_discovered')]
+    public function getPriorityConfigDiscovered(): string
+    {
+        return 'Discovered Priority Config: Low';
+    }
+}