fix(codexapp): extend child agent wait guidance

server.js

@@ -643,6 +643,8 @@ const CODEX_APP_COLLABORATION_INSTRUCTIONS = [
   '- If you call spawn_agent with fork_context omitted or true, do not set agent_type, model, or reasoning_effort.',
   '- If you need a specific agent_type, model, or reasoning_effort, set fork_context: false and include only the necessary context in the message.',
   '- Do not rely on parent turn reasoning settings for spawned agents; only set reasoning_effort on spawn_agent when the chosen child model supports it.',
+  '- When calling wait_agent, always pass timeout_ms explicitly. Use 300000ms for normal waits, and use a longer value when the child task is expected to run longer.',
+  '- If wait_agent returns without a final child-agent status, keep waiting on the same target agents in additional wait_agent rounds until they return, the user interrupts, or the result is no longer needed.',
 ].join('\n');
 
 function getLocalCodexConfigTomlPath() {