add fix

Author: ChrisB-TL

Diff for: src/Structured/PendingRequest.php

@@ -37,8 +37,10 @@ public function toRequest(): Request
             throw PrismException::promptOrMessages();
         }
 
+        $messages = $this->messages;
+
         if ($this->prompt) {
-            $this->messages[] = new UserMessage($this->prompt);
+            $messages[] = new UserMessage($this->prompt);
         }
 
         if (! $this->schema instanceof \EchoLabs\Prism\Contracts\Schema) {
@@ -49,7 +51,7 @@ public function toRequest(): Request
             model: $this->model,
             systemPrompt: $this->systemPrompt,
             prompt: $this->prompt,
-            messages: $this->messages,
+            messages: $messages,
             temperature: $this->temperature,
             maxTokens: $this->maxTokens,
             topP: $this->topP,

Diff for: src/Text/PendingRequest.php

@@ -39,15 +39,17 @@ public function toRequest(): Request
             throw PrismException::promptOrMessages();
         }
 
+        $messages = $this->messages;
+
         if ($this->prompt) {
-            $this->messages[] = new UserMessage($this->prompt);
+            $messages[] = new UserMessage($this->prompt);
         }
 
         return new Request(
             model: $this->model,
             systemPrompt: $this->systemPrompt,
             prompt: $this->prompt,
-            messages: $this->messages,
+            messages: $messages,
             temperature: $this->temperature,
             maxTokens: $this->maxTokens,
             maxSteps: $this->maxSteps,

Diff for: tests/Structured/PendingRequestTest.php

@@ -135,4 +135,4 @@ public function resolve($name, $config = []): \EchoLabs\Prism\Contracts\Provider
 
     $request->toRequest();
     $request->toRequest();
-})->throwsNoExceptions();
+})->throwsNoExceptions();

Diff for: tests/Text/PendingRequestTest.php

@@ -235,4 +235,4 @@
 
     $request->toRequest();
     $request->toRequest();
-})->throwsNoExceptions();
+})->throwsNoExceptions();