chore: proper client extraction (#6996)

codex-rs/codex-client/src/telemetry.rs

@@ -0,0 +1,14 @@
+use crate::error::TransportError;
+use http::StatusCode;
+use std::time::Duration;
+
+/// API specific telemetry.
+pub trait RequestTelemetry: Send + Sync {
+    fn on_request(
+        &self,
+        attempt: u64,
+        status: Option<StatusCode>,
+        error: Option<&TransportError>,
+        duration: Duration,
+    );
+}