diff --git a/agent/codex_runtime.py b/agent/codex_runtime.py
index 4f1861a943..c7f6732072 100644
--- a/agent/codex_runtime.py
+++ b/agent/codex_runtime.py
@@ -90,7 +90,6 @@ def _record_codex_app_server_usage(agent, turn) -> dict[str, Any]:
 
     def billing(**extra):
         return dict(model=agent.model, billing_provider=agent.provider, billing_base_url=agent.base_url, api_call_count=1, **extra)
-
     if not isinstance(usage, dict) or not usage:
         if compressor is not None and getattr(compressor, "awaiting_real_usage_after_compression", False):
             # No usage cannot adjudicate the pending compaction; unlatch preflight deferral.
@@ -347,7 +346,6 @@ def make_codex_app_server_event_bridge(agent) -> Callable[[dict], None]:
             (_fire_tool_completed if completed else _fire_tool_started)(item)
         elif completed and item_type == "agentMessage":
             _fire_agent_message_completed(item)
-
     handlers: dict[str, Callable[[dict], None]] = {
         "item/agentMessage/delta": lambda p: _fire_delta(p, "_fire_stream_delta"),
         "item/reasoning/delta": lambda p: _fire_delta(p, "_fire_reasoning_delta"),
@@ -361,7 +359,6 @@ def make_codex_app_server_event_bridge(agent) -> Callable[[dict], None]:
         if handler is not None:
             params = note.get("params")
             handler(params if isinstance(params, dict) else {})
-
     return on_event
 
 
@@ -554,7 +551,6 @@ def _raise_stream_error(event: Any) -> None:
     def _error_field(name: str) -> Any:
         value = _event_field(event, name)
         return _event_field(nested, name) if value is None and nested is not None else value
-
     raw_message = _error_field("message")
     message = (str(raw_message) if raw_message is not None else "stream emitted error event").strip() or "stream emitted error event"
     raise _StreamErrorEvent(message, code=_error_field("code"), param=_error_field("param"))
@@ -981,7 +977,6 @@ def run_codex_stream(agent, api_kwargs: dict, client: Any = None, on_first_delta
             # pool. ``client is None`` is the shared primary client — never force-shut.
             if client is not None:
                 agent._abort_request_openai_client(active_client, reason="codex_stream_close_failed")
-
     wants_commentary = getattr(agent, "interim_assistant_callback", None) is not None and getattr(agent, "show_commentary", True)
     on_commentary_message = _fenced(lambda text: agent._fire_streamed_codex_commentary(text)) if wants_commentary else None
     call_role = ("delegated" if getattr(agent, "is_subagent", False)