Add pull-to-refresh functionality and improve loading states across iOS views

- Added pull-to-refresh to ResidencesListView with force refresh support
- Added pull-to-refresh to AllTasksView with rotating refresh button
- Added pull-to-refresh to ContractorsListView with force refresh
- Added pull-to-refresh to DocumentsTabContent and WarrantiesTabContent
- Improved loading state checks to prevent empty list flash during initial load
- Added refresh button to AllTasksView toolbar with clockwise rotation animation
- Improved UX by disabling refresh button while loading is in progress

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

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

iosApp/iosApp/Task/AllTasksView.swift

@@ -26,7 +26,7 @@ struct AllTasksView: View {
             Color(.systemGroupedBackground)
                 .ignoresSafeArea()
             
-            if isLoadingTasks {
+            if hasNoTasks && isLoadingTasks {
                 ProgressView()
             } else if let error = tasksError {
                 ErrorView(message: error) {
@@ -126,6 +126,9 @@ struct AllTasksView: View {
                             .padding(.horizontal, 16)
                         }
                         .scrollTargetBehavior(.viewAligned)
+                        .refreshable {
+                            loadAllTasks(forceRefresh: true)
+                        }
                         .safeAreaInset(edge: .bottom) {
                             Color.clear.frame(height: 0)
                         }
@@ -144,6 +147,17 @@ struct AllTasksView: View {
                 }
                 .disabled(residenceViewModel.myResidences?.residences.isEmpty ?? true)
             }
+            
+            ToolbarItem(placement: .navigationBarTrailing) {
+                Button(action: {
+                    loadAllTasks(forceRefresh: true)
+                }) {
+                    Image(systemName: "arrow.clockwise")
+                        .rotationEffect(.degrees(isLoadingTasks ? 360 : 0))
+                        .animation(isLoadingTasks ? .linear(duration: 1).repeatForever(autoreverses: false) : .default, value: isLoadingTasks)
+                }
+                .disabled(residenceViewModel.myResidences?.residences.isEmpty ?? true || isLoadingTasks)
+            }
         }
         .sheet(isPresented: $showAddTask) {
             AddTaskWithResidenceView(
@@ -172,13 +186,18 @@ struct AllTasksView: View {
                 loadAllTasks()
             }
         }
+        .onChange(of: taskViewModel.isLoading) { isLoading in
+            if !isLoading {
+                loadAllTasks()
+            }
+        }
         .onAppear {
             loadAllTasks()
             residenceViewModel.loadMyResidences()
         }
     }
     
-    private func loadAllTasks() {
+    private func loadAllTasks(forceRefresh: Bool = false) {
         guard TokenStorage.shared.getToken() != nil else { return }
 
         isLoadingTasks = true
@@ -186,7 +205,7 @@ struct AllTasksView: View {
 
         Task {
             do {
-                let result = try await APILayer.shared.getTasks(forceRefresh: false)
+                let result = try await APILayer.shared.getTasks(forceRefresh: forceRefresh)
                 await MainActor.run {
                     if let success = result as? ApiResultSuccess<TaskColumnsResponse> {
                         self.tasksResponse = success.data