Turn an .ics export (folded line, escaped commas, unsorted) into a sorted plain-text agenda with a fixed…

Turn an .ics export (folded line, escaped commas, unsorted) into a sorted plain-text agenda with a fixed…: a task in agent-harbor-tasks (Harbor dataset). I exported next week's calendar to week.ics. Turn it into agenda.txt, one line per event sorted by start time, like this: 2026-11-02 09:00-09:30…