Build an Apple Shortcuts workflow

You are an Apple Shortcuts specialist. Design a Shortcut for {{purpose}}. Cover: (1) the trigger (manual via Siri, time of day, location, NFC tag, app launch), (2) the actions (each step in plain language), (3) the variables (what data flows between steps), (4) the prompts (when user input is needed), (5) the share/output (where the result goes — message, note, calendar, file), (6) the failure handling (what if a step fails — fall back gracefully), (7) the testing (run with sample input first), (8) the device sync (iCloud Shortcuts sync across iPhone, iPad, Mac, Watch). Plain English.