Add actionable push notifications for iOS and Android

iOS:
- Add notification categories with action buttons (complete, view, cancel, etc.)
- Handle notification actions in AppDelegate with API calls
- Add navigation to specific task from notification tap
- Register UNNotificationCategory for each task state

Android:
- Add NotificationActionReceiver BroadcastReceiver for handling actions
- Update MyFirebaseMessagingService to show action buttons
- Add deep link handling in MainActivity for task navigation
- Register receiver in AndroidManifest.xml

Shared:
- Add navigateToTaskId parameter to App for cross-platform navigation
- Add notification observers in MainTabView/AllTasksView for refresh

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

iosApp/iosApp/Task/AllTasksView.swift

@@ -17,6 +17,9 @@ struct AllTasksView: View {
     @State private var selectedTaskForCancel: TaskResponse?
     @State private var showCancelConfirmation = false
 
+    // Deep link task ID to open (from push notification)
+    @State private var pendingTaskId: Int32?
+
     // Use ViewModel's computed properties
     private var totalTaskCount: Int { taskViewModel.totalTaskCount }
     private var hasNoTasks: Bool { taskViewModel.hasNoTasks }
@@ -97,6 +100,31 @@ struct AllTasksView: View {
                 loadAllTasks()
                 residenceViewModel.loadMyResidences()
             }
+            // Handle push notification deep links
+            .onReceive(NotificationCenter.default.publisher(for: .navigateToTask)) { notification in
+                if let userInfo = notification.userInfo,
+                   let taskId = userInfo["taskId"] as? Int {
+                    pendingTaskId = Int32(taskId)
+                }
+            }
+            .onReceive(NotificationCenter.default.publisher(for: .navigateToEditTask)) { notification in
+                if let userInfo = notification.userInfo,
+                   let taskId = userInfo["taskId"] as? Int {
+                    pendingTaskId = Int32(taskId)
+                }
+            }
+            // When tasks load and we have a pending task ID, open the edit sheet
+            .onChange(of: tasksResponse) { response in
+                if let taskId = pendingTaskId, let response = response {
+                    // Find the task in all columns
+                    let allTasks = response.columns.flatMap { $0.tasks }
+                    if let task = allTasks.first(where: { $0.id == taskId }) {
+                        selectedTaskForEdit = task
+                        showEditTask = true
+                        pendingTaskId = nil
+                    }
+                }
+            }
     }
 
     @ViewBuilder