fix(sync): add foreground sync, remove manual sync button

- Add scenePhase observer to sync when app returns to foreground
- Remove misleading "Sync Schedules" button from Settings (it only
  reloaded local data, didn't actually sync from CloudKit)
- Fix GamesHistoryView to refresh list after deleting a visit

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Settings/Views/SettingsView.swift

@@ -21,9 +21,6 @@ struct SettingsView: View {
             // Travel Preferences
             travelSection
 
-            // Data Sync
-            dataSection
-
             // About
             aboutSection
 
@@ -149,57 +146,6 @@ struct SettingsView: View {
         .listRowBackground(Theme.cardBackground(colorScheme))
     }
 
-    // MARK: - Data Section
-
-    private var dataSection: some View {
-        Section {
-            Button {
-                Task {
-                    await viewModel.syncSchedules()
-                }
-            } label: {
-                HStack {
-                    Label("Sync Schedules", systemImage: "arrow.triangle.2.circlepath")
-
-                    Spacer()
-
-                    if viewModel.isSyncing {
-                        ThemedSpinnerCompact(size: 18)
-                    }
-                }
-            }
-            .disabled(viewModel.isSyncing)
-
-            if let lastSync = viewModel.lastSyncDate {
-                HStack {
-                    Text("Last Sync")
-                    Spacer()
-                    Text(lastSync, style: .relative)
-                        .foregroundStyle(.secondary)
-                }
-            }
-
-            if let error = viewModel.syncError {
-                HStack {
-                    Image(systemName: "exclamationmark.triangle")
-                        .foregroundStyle(.red)
-                    Text(error)
-                        .font(.caption)
-                        .foregroundStyle(.red)
-                }
-            }
-        } header: {
-            Text("Data")
-        } footer: {
-            #if targetEnvironment(simulator)
-            Text("Using stub data (Simulator mode)")
-            #else
-            Text("Schedule data is synced from CloudKit.")
-            #endif
-        }
-        .listRowBackground(Theme.cardBackground(colorScheme))
-    }
-
     // MARK: - About Section
 
     private var aboutSection: some View {