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/Views/ScenicPromotionPreviewSupport.swift

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+//
+//  ScenicPromotionPreviewSupport.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/7/2.
+//
+
+import Foundation
+
+#if DEBUG
+/// 宣传页 Preview 工厂，提供预置 ViewModel 与 Mock 数据。
+@MainActor
+enum ScenicPromotionPreviewSupport {
+    /// 返回指定演示场景的主页面 ViewModel。
+    static func mainViewModel(scenario: ScenicPromotionDemoScenario = .normal) -> ScenicPromotionViewModel {
+        let viewModel = ScenicPromotionViewModel()
+        viewModel.applyScenario(scenario)
+        return viewModel
+    }
+
+    /// 返回指定演示场景的设置页 ViewModel。
+    static func settingsViewModel(scenario: ScenicPromotionSettingsDemoScenario = .normal) -> ScenicPromotionSettingsViewModel {
+        let viewModel = ScenicPromotionSettingsViewModel()
+        viewModel.applyScenario(scenario)
+        return viewModel
+    }
+
+    /// 预览用看板数据。
+    static var sampleBoard: ScenicPromotionBoard {
+        ScenicPromotionMockStore.mockBoard
+    }
+
+    /// 预览用排队信息。
+    static var sampleQueue: ScenicPromotionQueueInfo {
+        sampleBoard.spots[0].queue!
+    }
+
+    /// 预览用视频素材。
+    static var sampleVideoMedia: ScenicPromotionMedia {
+        sampleBoard.spots[0].videos[0]
+    }
+
+    /// 预览用已上传素材。
+    static var sampleManagedMaterial: ScenicPromotionManagedMaterial {
+        ScenicPromotionMockStore.mockMaterialsByPointID["material_bridge"]!.first!
+    }
+}
+#endif