Sheets: list tabs
List the tabs of a Google Spreadsheet. Returns sheets (name, gid) and the spreadsheet title. gid feeds sheets_read_tab / sheets_write_cells / the edit?gid= URL.
Input
spreadsheetId requiredSpreadsheet id (the /d/<id>/ part) or any full docs.google.com spreadsheet URL
Output
title requiredSpreadsheet title
sheets requiredFAQ
Sheets: new spreadsheet
Create a new Google Spreadsheet in My Drive, optionally with a title. Returns spreadsheetId, url, and firstGid (always 0). The file lands in Drive root (My Drive); moving it elsewhere is a Drive action, not a Sheets one.
Sheets: add tab
Add a tab to a Google Spreadsheet, optionally naming it in the same pass. Returns the new tab's gid and final name. Waits for the editor's save before resolving; needs edit rights.
Sheets: delete tab
Delete one tab of a Google Spreadsheet by gid. Returns deletedGid and remainingTabs (names left). The sheet's data goes with it (recover via Undo / Drive history); an unknown gid throws rather than risk deleting the wrong sheet; needs edit rights.
