fix: resolve issue #13 - Today tab

Automated fix by Tony CI.
Closes #13

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

PlantGuide/Presentation/Scenes/PlantDetail/PlantDetailViewModel.swift

@@ -285,8 +285,16 @@ final class PlantDetailViewModel {
 
         // Find and update the task
         if let index = schedule.tasks.firstIndex(where: { $0.id == task.id }) {
-            schedule.tasks[index] = task.completed()
+            let completedTask = task.completed()
+            schedule.tasks[index] = completedTask
             careSchedule = schedule
+
+            // Persist the change to the repository
+            do {
+                try await careScheduleRepository.updateTask(completedTask)
+            } catch {
+                print("Failed to persist task completion: \(error)")
+            }
         }
     }
 

PlantGuide/Presentation/Scenes/TodayView/TodayView.swift

@@ -77,6 +77,9 @@ struct TodayView: View {
             .task {
                 await viewModel.loadTasks()
             }
+            .onAppear {
+                Task { await viewModel.loadTasks() }
+            }
             .refreshable {
                 await viewModel.loadTasks()
             }