feat: 完善相册 AI 修图模板选择流程

suixinkan/Features/TravelAlbum/ViewModels/TravelAlbumDetailViewModel.swift

@@ -207,41 +207,18 @@ final class TravelAlbumDetailViewModel {
         }
     }
 
-    /// 重新拉取当前筛选、排序下已经加载的分页范围，供全屏预览刷新关联图片。
-    func reloadLoadedMaterials(
-        api: any TravelAlbumServing
-    ) async throws -> TravelAlbumListResponse<TravelAlbumMaterial> {
-        let requestedPageCount = max(currentPage, 1)
-        var refreshed: [TravelAlbumMaterial] = []
-        var refreshedTotal = 0
-        var loadedPageCount = 0
-
-        for page in 1 ... requestedPageCount {
-            let response = try await api.materialList(
-                userEquityTravelId: albumId,
-                page: page,
-                pageSize: pageSize,
-                orderBy: sortOption.rawValue,
-                isPurchased: selectedTab == .purchased ? 1 : nil
-            )
-            if page == 1 { refreshedTotal = response.total }
-            refreshed.append(contentsOf: response.list)
-            loadedPageCount = page
-            if refreshed.count >= refreshedTotal || response.list.isEmpty { break }
+    /// 定向刷新单个素材，并同步替换网格列表中的对应缓存。
+    func refreshMaterial(id: Int, api: any TravelAlbumServing) async throws -> TravelAlbumMaterial {
+        let material = try await api.materialInfo(
+            userEquityTravelId: albumId,
+            materialId: id
+        )
+        guard material.id == id else { throw APIError.invalidResponse }
+        if let index = materials.firstIndex(where: { $0.id == id }) {
+            materials[index] = material
+            notifyStateChange()
         }
-
-        var seen = Set<Int>()
-        materials = refreshed.filter { seen.insert($0.id).inserted }
-        currentPage = max(loadedPageCount, 1)
-        canLoadMore = materials.count < refreshedTotal
-        selectedMaterialIds.formIntersection(materials.map(\.id))
-        if selectedTab == .all {
-            allPhotoCount = refreshedTotal
-        } else {
-            purchasedPhotoCount = refreshedTotal
-        }
-        notifyStateChange()
-        return TravelAlbumListResponse(total: refreshedTotal, list: materials)
+        return material
     }
 
     /// 切换选择模式。