docs(workflow-executor): document pendingUpdate field on UpdateRecordStepExecutionData

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: alban bertolini

packages/workflow-executor/src/types/step-execution-data.ts

@@ -47,6 +47,7 @@ export interface UpdateRecordStepExecutionData extends BaseStepExecutionData {
   executionParams?: { fieldDisplayName: string; value: string };
   /** User confirmed → values returned by updateRecord. User rejected → skipped. */
   executionResult?: { updatedValues: Record<string, unknown> } | { skipped: true };
+  /** AI-selected field and value awaiting user confirmation. Used in the confirmation flow only. */
   pendingUpdate?: {
     fieldDisplayName: string;
     value: string;