Workout "mark all complete" + recurring-task done confirmation notification

- Workout window: the header ⋯ menu gains "Mark All Complete" and "Clear All
  Sets" (Manage Workouts preserved). New WorkoutViewModel.setAllSetsDone(_:)
  ticks every set across all sections/exercises and runs the normal completion/
  logging path.
- Recurring tasks: completing an occurrence now posts a quiet "✓ Done. Repeats
  <tomorrow / in 1 week / …>" confirmation via NotificationManager
  .notifyRecurringCompleted, phrased from the next active occurrence. Hooked
  into TaskViewModel.toggleOccurrence; un-completing does nothing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

KisaniCal/Models/ExerciseModels.swift

@@ -766,6 +766,24 @@ class WorkoutViewModel: ObservableObject {
         if doneSets == totalSets && totalSets > 0 { logWorkoutCompleted() }
     }
 
+    /// Mark every set of the active workout done/undone — the "Select all & mark
+    /// complete" quick action. Logs completion when everything is checked.
+    func setAllSetsDone(_ done: Bool) {
+        for si in activeSections.indices {
+            for ei in activeSections[si].exercises.indices {
+                for idx in activeSections[si].exercises[ei].sets.indices {
+                    activeSections[si].exercises[ei].sets[idx].isDone = done
+                }
+            }
+        }
+        if done {
+            if sessionStartDate == nil { sessionStartDate = Date() }
+            UserDefaults.kisani.set(iso.string(from: Date()), forKey: kLastActiveDay)
+        }
+        syncBack()
+        if done, doneSets == totalSets && totalSets > 0 { logWorkoutCompleted() }
+    }
+
     func addSet(sectionId: UUID, to exerciseId: UUID) {
         guard let si = activeSections.firstIndex(where: { $0.id == sectionId }),
               let ei = activeSections[si].exercises.firstIndex(where: { $0.id == exerciseId })

KisaniCal/Models/TaskItem.swift

@@ -322,9 +322,15 @@ class TaskViewModel: ObservableObject {
         guard let idx = tasks.firstIndex(where: { $0.id == t.id }) else { return }
         let key = occurrenceKey(date)
         var set = Set(tasks[idx].completedOccurrences ?? [])
-        if set.contains(key) { set.remove(key) } else { set.insert(key) }
+        let nowDone: Bool
+        if set.contains(key) { set.remove(key); nowDone = false } else { set.insert(key); nowDone = true }
         tasks[idx].completedOccurrences = Array(set)
         save()
+        // Completing a recurring occurrence → "✓ Done. Repeats …" confirmation.
+        if nowDone {
+            let next = nextActiveOccurrence(tasks[idx], from: date)
+            NotificationManager.shared.notifyRecurringCompleted(title: tasks[idx].title, nextOccurrence: next)
+        }
     }
 
     /// A display copy of a recurring task pinned to one occurrence date, with that