Archived
App Groups are per-device, so the watch cannot read the file the phone writes and has to be handed the data. Three delivery paths: application context for the latest state, a complication push only when the next appointment actually changed (the budget is small), and a reply to the watch asking directly. Sign-out pushes an empty signed-out snapshot. Clearing our own container is not enough — the watch holds its own copy and would keep rendering the previous user's calendar. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>