彻底清理 promotion_page 残留引用，移除 hiddenHomeMenuURIs 机制。

宣传页已从白名单、菜单构建与文档中完全删除，不再保留专用隐藏逻辑。

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

suixinkan/Features/Home/ViewModels/HomeViewModel.swift

@@ -80,7 +80,6 @@ final class HomeViewModel: ObservableObject {
         var seen = Set<String>()
         var deduplicated: [PermissionItem] = []
         for item in permissionItems where !item.uri.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
-            guard !HomeCommonMenuStore.hiddenHomeMenuURIs.contains(item.uri) else { continue }
             if seen.insert(HomeMenuRouter.menuAliasKey(for: item.uri)).inserted {
                 deduplicated.append(item)
             }