fix(handlers): preserve upstream response logs before duplicate detection

sdk/api/handlers/handlers.go

@@ -618,28 +618,21 @@ func (h *BaseAPIHandler) WriteErrorResponse(c *gin.Context, msg *interfaces.Erro
 	}
 
 	body := BuildErrorResponseBody(status, errText)
-	// Check if this error was already recorded by the executor (to avoid duplicate logging)
+	// Append first to preserve upstream response logs, then drop duplicate payloads if already recorded.
-	// The executor logs raw error text, so match errText before falling back to the JSON body.
+	var previous []byte
-	shouldAppend := true
 	if existing, exists := c.Get("API_RESPONSE"); exists {
 		if existingBytes, ok := existing.([]byte); ok && len(existingBytes) > 0 {
-			trimmedErrText := strings.TrimSpace(errText)
+			previous = bytes.Clone(existingBytes)
-			if trimmedErrText != "" && bytes.Contains(existingBytes, []byte(trimmedErrText)) {
-				// Error already logged by executor, skip appending
-				shouldAppend = false
-			} else {
-				trimmedBody := bytes.TrimSpace(body)
-				if len(trimmedBody) > 0 && bytes.Contains(existingBytes, trimmedBody) {
-					// Error already logged by executor, skip appending
-					shouldAppend = false
 		}
 	}
-		}
-	}
-	if shouldAppend {
-		// Use appendAPIResponse to preserve any previously captured API response data
-		// (such as formatted upstream response logs from logging_helpers.go)
 	appendAPIResponse(c, body)
+	trimmedErrText := strings.TrimSpace(errText)
+	trimmedBody := bytes.TrimSpace(body)
+	if len(previous) > 0 {
+		if (trimmedErrText != "" && bytes.Contains(previous, []byte(trimmedErrText))) ||
+			(len(trimmedBody) > 0 && bytes.Contains(previous, trimmedBody)) {
+			c.Set("API_RESPONSE", previous)
+		}
 	}
 
 	if !c.Writer.Written() {