The Foundation Way — same UI, a fraction of the code

// Custom SignInView.swift — excerpt
struct SignInView: View {
  @State private var email = ""
  @State private var password = ""
  @State private var emailError: String?
  @State private var passwordError: String?
  @FocusState private var focused: Field?

  var body: some View {
    ScrollView {
      VStack(spacing: 24) {
        Text("Sign in")
          .font(.largeTitle.bold())
        // email field + border + error label
        VStack(alignment: .leading) {
          TextField("Email", text: $email)
            .textContentType(.emailAddress)
            .padding()
            .background(Color(.secondarySystemFill))
            .clipShape(RoundedRectangle(cornerRadius: 10))
          if let emailError { Text(emailError).foregroundStyle(.red) }
        }
        // secure field + reveal toggle + errors
        // primary button style, disabled state
        Button("Forgot password?") { }
        HStack { Divider(); Text("or"); Divider() }
        // Apple + Google custom buttons
        HStack {
          Text("Don't have an account?")
          Button("Sign up") { }
        }
      }.padding()
    }
    .onChange(of: email) { validateEmail() }
  }
  func validateEmail() { /* … */ }
  // + dark mode colors, macOS spacing, a11y labels…
}

struct MetricTile: View {
  let title, value, trend: String
  let up: Bool
  var body: some View {
    VStack(alignment: .leading, spacing: 8) {
      HStack {
        Text(title).font(.caption).foregroundStyle(.secondary)
        Spacer()
        Image(systemName: "chart.line.uptrend.xyaxis")
      }
      Text(value).font(.title2.bold())
      HStack(spacing: 4) {
        Image(systemName: up ? "arrow.up" : "arrow.down")
        Text(trend).font(.caption)
      }.foregroundStyle(up ? .green : .red)
    }
    .padding()
    .background(Color(.secondarySystemBackground))
    .clipShape(RoundedRectangle(cornerRadius: 12))
  }
}

struct DashboardMetrics: View {
  var body: some View {
    LazyVGrid(columns: [...]) {
      MetricTile(...) // ×3
    }
  }
}

// ContactsTableView.swift — simplified
struct ContactsTableView: View {
  @State private var selection = Set<UUID>()
  @State private var sort: Sort = .name

  var body: some View {
    Group {
      #if os(macOS)
      Table(contacts, selection: $selection, sortOrder: $sort) {
        TableColumn("Name", value: \.name)
        TableColumn("Company", value: \.company)
      }
      #else
      List(contacts, selection: $selection) { c in
        HStack { Text(c.name); Spacer(); Text(c.company) }
      }
      #endif
    }
    .overlay { if contacts.isEmpty { EmptyStateView() } }
  }
}
// + filter hook, Return-to-open, toolbar bulk actions…

// OrdersListView + OrderRow + StatusChip + filters
struct OrdersListView: View {
  @State private var query = ""
  @State private var filter: Status?
  var body: some View {
    NavigationStack {
      Group {
        if isLoading { ProgressView() }
        else if filtered.isEmpty { EmptyOrdersView() }
        else { List { /* rows */ } }
      }
      .searchable(text: $query)
      .toolbar { /* filter menu */ }
    }
  }
}
// Row layout, date formatting, badge colors, navigation…

extension Color {
  static let brandPrimary = Color("BrandPrimary")
  // asset catalog + dark variants…
}

struct ToastOverlay: ViewModifier { /* queue, auto-dismiss */ }

@main struct App: App {
  var body: some Scene {
    WindowGroup {
      RootView()
        .tint(.brandPrimary)
        .modifier(ToastOverlay())
    }
  }
}

// ArticleRow.swift — reusable feed row
struct ArticleRow: View {
  let title: String
  let authorInitials: String
  let authorName: String
  let date: Date
  let tags: [String]

  private var relativeTime: String {
    let formatter = RelativeDateTimeFormatter()
    formatter.unitsStyle = .abbreviated
    return formatter.localizedString(for: date, relativeTo: .now)
  }

  var body: some View {
    VStack(alignment: .leading, spacing: 6) {
      Text(title)
        .font(.headline)
        .lineLimit(2)

      HStack(spacing: 6) {
        Circle()
          .fill(Color.accentColor.opacity(0.15))
          .frame(width: 24, height: 24)
          .overlay(
            Text(authorInitials)
              .font(.caption2.bold())
              .foregroundStyle(.accentColor)
          )
        Text(authorName)
          .font(.caption)
          .foregroundStyle(.secondary)
        Text("·")
          .foregroundStyle(.secondary)
        Text(relativeTime)
          .font(.caption)
          .foregroundStyle(.secondary)
      }

      if !tags.isEmpty {
        HStack(spacing: 6) {
          ForEach(tags, id: \.self) { tag in
            Text(tag)
              .font(.caption2.bold())
              .padding(.horizontal, 8)
              .padding(.vertical, 3)
              .background(Color.secondary.opacity(0.12))
              .clipShape(Capsule())
          }
        }
      }
    }
  }
}
// + dark mode contrast tuning, RTL layout, a11y labels…