Every Cursor message was costing me 14 GB of backup space
My Time Machine drive has a 1 TB quota. When I finally looked at what was on it, it held eleven backups going back exactly three weeks. Everything from September was already gone, deleted by Time Machine to make room. The reason turned out to be one file. Cursor keeps all of its chat and agent history in a single SQLite database, and on my machine that file had grown to 14 GB. Time Machine backs up whole files, so whenever that database changes between two backups, even by one message, the next backup stores a complete new 14 GB copy. My backup drive was holding ten of them. ...