Snack App: Exercise Reminders

New movements you can do without leaving your chair. - Five desk-friendly exercises: Seated Calf Raise, Isometric Neck Hold, Forearm Wall Breathing, Anti-Rotation Hold, and Cross Crawl. All are quiet, need no equipment, and work in office clothes. - Exercises can now be filtered by a new Neck muscle group. - Fixed: opening the log form from a reminder could leave it stuck open, with Cancel and swipe-down both doing nothing. - Deleting several snacks in a row now collapses into a single Undo, instead of one toast per snack. - Clearer wording on the backup screen shown during first-time setup. Your data still lives only on your device, backed up only to your own iCloud. No account, no backend.