Read cells from a Google Sheet Hermoso can reach — one it created, or one the user handed over with the Google file picker in the app (that is how an EXISTING spreadsheet becomes readable; find its id with list_drive_files). Pass the spreadsheetId (from create_sheet) OR paste a Google Sheets URL as sheetUrl. If Google answers that the file was not found, the user has not picked it yet — ask them to pick it in the app rather than retrying. Returns a 2-D array of values.
Connector