Anthropic shipped three automation surfaces in four weeks. Most PMs are using the wrong one. Cowork Scheduled Tasks landed in February. Runs on your machine. Reads your local files. Needs your laptop awake. The right answer when the work needs your hard drive: scanning your downloads folder, editing an Excel, parsing months of Granola transcripts in ~/Documents. Claude Routines landed April 14. Runs on Anthropic's web infrastructure. Trigger from a schedule, a webhook, or a GitHub event. The…