@Reducer
struct StartFeature {
    @ObservableState
    struct State: Equatable {
        var path = StackState<Path.State>()
    }
    
    enum Action {
        case openMain
        case path(StackAction<Path.State, Path.Action>)
    }

    var body: some ReducerOf<Self> {
        
        Reduce { state, action in
            switch action {
           
            case .openMain:
                // Main 화면으로의 경로를 path 스택에 추가합니다.
                state.path.append(.mainScene(MainFeature.State(
                    policies: state.result
                )))
                return .none
                
            case let .path(action):
                // Path 액션을 처리합니다. 여기서는 화면 전환 로직을 추가할 수 있습니다.
                switch action {
                default:
                    return .none
                }
            }
            
        }
        .forEach(\.path, action: \.path) {
            Path()
        }
    }
}

extension StartFeature {
    @Reducer
    struct Path {
        @ObservableState
        enum State: Equatable {
            case mainScene(MainFeature.State)
        }
        
        enum Action {
            case mainScene(MainFeature.Action)
        }
        
        var body: some ReducerOf<Self> {

            Scope(state: \.mainScene, action: \.mainScene) {
                MainFeature()
            }
        }
    }
}

NavigationStack(path: $store.scope(state: \.path, action: \.path)) {
                VStack {
                    // 화면 구성
                }
                .padding(.horizontal, 20)
                .padding(.vertical, 20)
            } destination: { store in
                switch store.state {
      
                    
                case .mainScene:
                    if let store = store.scope(state: \.mainScene, action: \.mainScene) {
                        MainView(store: store)
                    }
                }
            }