Run Shortcut Batch

Starts one shortcut run per input row, grouped under a single batch_id. The shortcut must be published. Key each row by the field reference values from the shortcut's input_schema (see Get Shortcut); unknown keys are rejected with a 400 listing the valid references. Accepts up to 1000 rows per request. Runs execute asynchronously — poll List Shortcut Runs with the returned batch_id for status and results.