新增宣传页 Mock 模块并接入首页路由。

从 xh_test 同步 ScenicPromotion 演示页，补齐 MVVM 结构、本地资源、单元测试与模块文档，注册 promotion_page 首页入口。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Features/Home/Views/HomeSupportViews.swift

@@ -112,6 +112,8 @@ extension HomeRoute {
             OperatingAreaView()
         case .pilotCertification:
             PilotCertificationView()
+        case .scenicPromotion:
+            ScenicPromotionView()
         case let .modulePlaceholder(uri, title):
             HomeMigrationModuleView(title: title, uri: uri)
         }