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/ScenicPromotionLoadingView.swift

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+//
+//  ScenicPromotionLoadingView.swift
+//  suixinkan
+//
+//  Created by Codex on 2026/7/2.
+//
+
+import SwiftUI
+
+/// 宣传页 Loading 骨架屏，尺寸跟正常模块保持一致。
+struct ScenicPromotionLoadingView: View {
+    var body: some View {
+        ScrollView(showsIndicators: false) {
+            VStack(spacing: 18) {
+                RoundedRectangle(cornerRadius: 18)
+                    .fill(.white.opacity(0.72))
+                    .frame(height: 110)
+                RoundedRectangle(cornerRadius: 16)
+                    .fill(.white.opacity(0.72))
+                    .frame(height: 50)
+                LazyVGrid(columns: Array(repeating: GridItem(.flexible(), spacing: 12), count: 3), spacing: 12) {
+                    ForEach(0..<3, id: \.self) { _ in
+                        RoundedRectangle(cornerRadius: 14)
+                            .fill(.white.opacity(0.72))
+                            .frame(height: 92)
+                    }
+                }
+                RoundedRectangle(cornerRadius: 18)
+                    .fill(.white.opacity(0.72))
+                    .frame(height: 96)
+                RoundedRectangle(cornerRadius: 18)
+                    .fill(.white.opacity(0.72))
+                    .frame(height: 112)
+                RoundedRectangle(cornerRadius: 18)
+                    .fill(.white.opacity(0.72))
+                    .frame(height: 220)
+            }
+            .redacted(reason: .placeholder)
+            .padding(ScenicPromotionLayout.screenEdgePadding)
+            .frame(maxWidth: .infinity, alignment: .top)
+        }
+    }
+}
+
+#if DEBUG
+#Preview("加载中") {
+    ZStack {
+        ScenicPromotionSkyBackground().ignoresSafeArea()
+        ScenicPromotionLoadingView()
+    }
+}
+#endif