Google Sheets automation for a cleaning company (a fictional client, a real working sheet you can copy). One menu click cleans a messy booking export: dates in four formats, names in capitals or written Last, First, prices written five ways, repeated rows from overlapping exports. Rows it cannot trust go to a Problems tab instead of being guessed. A weekly report with a chart builds itself, is emailed as a PDF every Monday at 7 AM, and each overdue invoice gets a polite reminder, at most once a week. Built with Apps Script, narrow permissions, every run logged.