fix: make sure we can convert Request and Notification to string (#14)

* make sure we can convert Request and Notification to string

This is already used when we are logging

* fix: minor

* fix: revert minor

* fix: rector

Author: Nyholm

src/Message/Notification.php

@@ -4,7 +4,7 @@
 
 namespace PhpLlm\McpSdk\Message;
 
-final readonly class Notification implements \JsonSerializable
+final readonly class Notification implements \JsonSerializable, \Stringable
 {
     /**
      * @param array<string, mixed>|null $params
@@ -37,4 +37,9 @@ public function jsonSerialize(): array
             'params' => $this->params,
         ];
     }
+
+    public function __toString(): string
+    {
+        return sprintf('%s', $this->method);
+    }
 }

src/Message/Request.php

@@ -4,7 +4,7 @@
 
 namespace PhpLlm\McpSdk\Message;
 
-final class Request implements \JsonSerializable
+final class Request implements \JsonSerializable, \Stringable
 {
     /**
      * @param array<string, mixed>|null $params
@@ -40,4 +40,9 @@ public function jsonSerialize(): array
             'params' => $this->params,
         ];
     }
+
+    public function __toString(): string
+    {
+        return sprintf('%s: %s', $this->id, $this->method);
+    }
 }