拆分宣传页视图并扩充 Mock 数据，合作订单支持获客员备注名并修复线索图片网格尺寸。

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

suixinkan/Features/ScenicPromotion/ViewModels/ScenicPromotionViewModels.swift

@@ -140,6 +140,8 @@ final class ScenicPromotionSettingsViewModel: ObservableObject {
     @Published var selectedQueuePointIDs: Set<String> = []
     @Published var selectedMaterialPointID: String?
     @Published private(set) var materialsByPointID: [String: [ScenicPromotionManagedMaterial]] = [:]
+    /// 当前要预览的已上传素材。
+    @Published var previewMaterial: ScenicPromotionManagedMaterial?
 
     /// 多选排队打卡点的展示文案。
     var selectedQueuePointNames: String {
@@ -262,6 +264,11 @@ final class ScenicPromotionSettingsViewModel: ObservableObject {
         }
     }
 
+    /// 打开素材预览页。
+    func openMaterialPreview(_ material: ScenicPromotionManagedMaterial) {
+        previewMaterial = material
+    }
+
     /// 提交前校验至少绑定一个排队打卡点。
     func submit() -> Bool {
         guard !selectedQueuePointIDs.isEmpty else { return false }