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/Routing/HomeMenuRouter.swift

@@ -47,6 +47,7 @@ enum HomeMenuRouter {
         "project_edit": "项目管理",
         "location_report": "位置上报",
         "report_photographer": "举报摄影师",
+        "promotion_page": "宣传页",
         "registration_invitation": "注册邀请",
         "store": "店铺管理",
         "fly": "飞行管理",
@@ -134,6 +135,8 @@ enum HomeMenuRouter {
             return .destination(.locationReportHistory)
         case "report_photographer":
             return .destination(.photographerReport)
+        case "promotion_page":
+            return .destination(.scenicPromotion)
         case "deposit_order_detail", "deposit_order", "deposit_order_shooting_info":
             return .destination(.depositOrders)
         case "withdrawal_audit":
@@ -220,6 +223,7 @@ enum HomeMenuRouter {
             "project_edit",
             "location_report",
             "report_photographer",
+            "promotion_page",
             "registration_invitation",
             "photographer_invite",
             "invite_record",
@@ -300,6 +304,8 @@ enum HomeMenuRouter {
             return "位置上报"
         case "report_photographer":
             return "举报摄影师"
+        case "promotion_page":
+            return "宣传页"
         case "pm", "project_edit":
             return "项目管理"
         case "pm_manager":