Server-side automation for Google Sheets and Workspace apps with custom menus, triggers, dialogs, and email integration.

• Generates Apps Script code that installs via Extensions > Apps Script; supports custom menus, dialogs, sidebars, and automated triggers (on edit, time-driven, form submit)
• Handles email notifications, PDF exports, and external API integration with built-in error handling and batch operation patterns
• Requires one-time OAuth authorization per user; scripts run on Google's infrastructure with a generous free tier
• Critical performance rule: use batch getValues()/setValues() for bulk reads/writes instead of cell-by-cell operations (70x faster)
• V8 runtime only; use UrlFetchApp.fetch() instead of fetch, Utilities.sleep() instead of setTimeout, and SpreadsheetApp.flush() before returning from dialog-triggered functions