fix: align AI retouch template rules

suixinkan/Features/TravelAlbum/ViewModels/TravelAlbumAIRetouchTemplateViewModel.swift

@@ -90,7 +90,8 @@ final class TravelAlbumAIRetouchTemplateViewModel {
             case .refined, .atmosphere:
                 return 1
             case .all:
-                return 1 + (selectedAtmosphereTemplateId == nil ? 0 : 1)
+                return (selectedRefinedTemplateId == nil ? 0 : 1)
+                    + (selectedAtmosphereTemplateId == nil ? 0 : 1)
             }
         }
     }
@@ -109,6 +110,11 @@ final class TravelAlbumAIRetouchTemplateViewModel {
                 return unavailableMessage(for: category)
             }
         }
+        if case .reretouch(_, _, .all) = workflow,
+           selectedRefinedTemplateId == nil,
+           selectedAtmosphereTemplateId == nil {
+            return "请至少选择一个修图模板"
+        }
         guard let remainingQuota else {
             return "剩余修图次数获取失败，请刷新后重试"
         }
@@ -146,7 +152,9 @@ final class TravelAlbumAIRetouchTemplateViewModel {
             atmosphereTemplates = response.atmosphereTemplates
             coverTemplates = response.coverTemplates
             remainingQuota = response.remainingQuota
-            selectedRefinedTemplateId = visibleCategories.contains(.refined) ? refinedTemplates.first?.id : nil
+            selectedRefinedTemplateId = visibleCategories.contains(.refined) && !isOptional(.refined)
+                ? refinedTemplates.first?.id
+                : nil
             selectedAtmosphereTemplateId = visibleCategories.contains(.atmosphere) && !isOptional(.atmosphere)
                 ? atmosphereTemplates.first?.id
                 : nil
@@ -188,14 +196,14 @@ final class TravelAlbumAIRetouchTemplateViewModel {
         }
     }
 
-    /// 选择模板；仅选填分组允许再次点击取消，必选分组保持单选。
+    /// 选择模板；选填分组允许再次点击取消，必选分组保持单选。
     func toggleTemplate(id: Int, category: TravelAlbumAIRetouchTemplateCategory) {
         guard visibleCategories.contains(category),
               templates(for: category).contains(where: { $0.id == id })
         else { return }
         switch category {
         case .refined:
-            selectedRefinedTemplateId = id
+            selectedRefinedTemplateId = isOptional(category) && selectedRefinedTemplateId == id ? nil : id
         case .atmosphere:
             selectedAtmosphereTemplateId = isOptional(category) && selectedAtmosphereTemplateId == id ? nil : id
         case .cover: