fix: agent loop for disable response storage (#543)

- Fixes post-merge of #506

---------

Co-authored-by: Ilan Bigio <ilan@openai.com>

codex-cli/src/utils/parsers.ts

@@ -81,7 +81,13 @@ export function parseToolCallArguments(
   }
 
   const { cmd, command } = json as Record<string, unknown>;
-  const commandArray = toStringArray(cmd) ?? toStringArray(command);
+  // The OpenAI model sometimes produces a single string instead of an array.
+  // Accept both shapes:
+  const commandArray =
+    toStringArray(cmd) ??
+    toStringArray(command) ??
+    (typeof cmd === "string" ? [cmd] : undefined) ??
+    (typeof command === "string" ? [command] : undefined);
   if (commandArray == null) {
     return undefined;
   }