refactor: 移除字典强制覆盖能力

src/Application/TakeoutSaaS.Application/Dictionary/Models/LabelOverrideDto.cs

@@ -53,7 +53,6 @@ public sealed class LabelOverrideDto
     public string OverrideTypeName => OverrideType switch
     {
         OverrideType.TenantCustomization => "租户定制",
-        OverrideType.PlatformEnforcement => "平台强制",
         _ => "未知"
     };
 
@@ -102,7 +101,7 @@ public sealed class UpsertLabelOverrideRequest
     public Dictionary<string, string> OverrideValue { get; init; } = new(StringComparer.OrdinalIgnoreCase);
 
     /// <summary>
-    /// 覆盖原因/备注（平台强制覆盖时建议填写）。
+    /// 覆盖原因/备注。
     /// </summary>
     public string? Reason { get; init; }
 }

src/Application/TakeoutSaaS.Application/Dictionary/Services/DictionaryLabelOverrideService.cs

@@ -72,12 +72,13 @@ public sealed class DictionaryLabelOverrideService(
         // 2. 查找现有覆盖或创建新记录
         var existing = await overrideRepository.GetByItemIdAsync(tenantId, request.DictionaryItemId, cancellationToken);
         var now = DateTime.UtcNow;
-
+        // 2.1 更新现有覆盖或创建新记录
         if (existing != null)
         {
-            if (existing.OverrideType == OverrideType.PlatformEnforcement)
+            // 2.2 仅允许租户定制类型被租户修改，其他类型视为系统保留数据
+            if (existing.OverrideType != OverrideType.TenantCustomization)
             {
-                throw new BusinessException(ErrorCodes.Forbidden, "平台强制覆盖不可由租户修改");
+                throw new BusinessException(ErrorCodes.Forbidden, "该覆盖记录不允许由租户修改");
             }
 
             existing.OverrideValue = DictionaryValueConverter.Serialize(request.OverrideValue);
@@ -109,61 +110,6 @@ public sealed class DictionaryLabelOverrideService(
         return MapToDto(existing);
     }
 
-    /// <summary>
-    /// 创建或更新平台对租户字典的强制覆盖（平台强制）。
-    /// </summary>
-    /// <param name="targetTenantId">目标租户 ID。</param>
-    /// <param name="request">覆盖请求。</param>
-    /// <param name="operatorId">操作人 ID。</param>
-    /// <param name="cancellationToken">取消标记。</param>
-    public async Task<LabelOverrideDto> UpsertPlatformOverrideAsync(
-        long targetTenantId,
-        UpsertLabelOverrideRequest request,
-        long operatorId,
-        CancellationToken cancellationToken = default)
-    {
-        // 1. 验证字典项存在
-        var item = await itemRepository.GetByIdAsync(request.DictionaryItemId, cancellationToken);
-        if (item == null)
-        {
-            throw new BusinessException(ErrorCodes.NotFound, "字典项不存在");
-        }
-
-        // 2. 查找现有覆盖或创建新记录
-        var existing = await overrideRepository.GetByItemIdAsync(targetTenantId, request.DictionaryItemId, cancellationToken);
-        var now = DateTime.UtcNow;
-
-        if (existing != null)
-        {
-            existing.OverrideValue = DictionaryValueConverter.Serialize(request.OverrideValue);
-            existing.OverrideType = OverrideType.PlatformEnforcement;
-            existing.Reason = request.Reason;
-            existing.UpdatedAt = now;
-            existing.UpdatedBy = operatorId;
-            await overrideRepository.UpdateAsync(existing, cancellationToken);
-        }
-        else
-        {
-            existing = new DictionaryLabelOverride
-            {
-                TenantId = targetTenantId,
-                DictionaryItemId = request.DictionaryItemId,
-                OriginalValue = item.Value,
-                OverrideValue = DictionaryValueConverter.Serialize(request.OverrideValue),
-                OverrideType = OverrideType.PlatformEnforcement,
-                Reason = request.Reason,
-                CreatedAt = now,
-                CreatedBy = operatorId
-            };
-            await overrideRepository.AddAsync(existing, cancellationToken);
-        }
-
-        await overrideRepository.SaveChangesAsync(cancellationToken);
-
-        existing.DictionaryItem = item;
-        return MapToDto(existing);
-    }
-
     /// <summary>
     /// 删除覆盖配置。
     /// </summary>
@@ -175,7 +121,6 @@ public sealed class DictionaryLabelOverrideService(
         long tenantId,
         long dictionaryItemId,
         long operatorId,
-        bool allowPlatformEnforcement = true,
         CancellationToken cancellationToken = default)
     {
         var existing = await overrideRepository.GetByItemIdAsync(tenantId, dictionaryItemId, cancellationToken);
@@ -184,9 +129,10 @@ public sealed class DictionaryLabelOverrideService(
             return false;
         }
 
-        if (!allowPlatformEnforcement && existing.OverrideType == OverrideType.PlatformEnforcement)
+        // 1. (空行后) 仅允许删除租户定制类型，其他类型视为系统保留数据
+        if (existing.OverrideType != OverrideType.TenantCustomization)
         {
-            throw new BusinessException(ErrorCodes.Forbidden, "平台强制覆盖不可由租户删除");
+            throw new BusinessException(ErrorCodes.Forbidden, "该覆盖记录不允许由租户删除");
         }
 
         existing.DeletedBy = operatorId;

src/Domain/TakeoutSaaS.Domain/Dictionary/Enums/OverrideType.cs

@@ -8,10 +8,5 @@ public enum OverrideType
     /// <summary>
     /// 租户定制：租户覆盖系统字典的显示值。
     /// </summary>
-    TenantCustomization = 1,
-
-    /// <summary>
-    /// 平台强制：平台管理员强制修正租户字典的显示值。
-    /// </summary>
-    PlatformEnforcement = 2
+    TenantCustomization = 1
 }