Fix Codex websocket retry metadata

internal/runtime/executor/codex_websockets_executor.go

@@ -868,7 +868,7 @@ func applyCodexWebsocketHeaders(ctx context.Context, headers http.Header, auth *
 		if auth != nil && auth.Metadata != nil {
 			if accountID, ok := auth.Metadata["account_id"].(string); ok {
 				if trimmed := strings.TrimSpace(accountID); trimmed != "" {
-					headers.Set("ChatGPT-Account-ID", trimmed)
+					setHeaderCasePreserved(headers, "ChatGPT-Account-ID", trimmed)
 				}
 			}
 		}
@@ -1040,7 +1040,9 @@ func parseCodexWebsocketError(payload []byte) (error, bool) {
 	out := buildCodexWebsocketErrorPayload(payload, status)
 	headers := parseCodexWebsocketErrorHeaders(payload)
 	statusError := statusErr{code: status, msg: string(out)}
-	if isCodexWebsocketConnectionLimitError(payload) {
+	if retryAfter := parseCodexRetryAfter(status, out, time.Now()); retryAfter != nil {
+		statusError.retryAfter = retryAfter
+	} else if isCodexWebsocketConnectionLimitError(payload) {
 		retryAfter := time.Duration(0)
 		statusError.retryAfter = &retryAfter
 	}