feat: 支持模型尊享标识并统一扣减尊享用量逻辑

新增模型是否为尊享的标识字段 IsPremium，并在网关层透传到模型描述。
使用模型描述中的 IsPremium 统一判断是否扣减尊享 token，用以替代多处重复的数据库查询。
同时整理了相关代码与注释，使尊享用量扣减逻辑更加集中和清晰。

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain.Shared/Dtos/AiModelDescribe.cs

@@ -61,4 +61,9 @@ public class AiModelDescribe
     /// 模型倍率
     /// </summary>
     public decimal Multiplier { get; set; }
+    
+    /// <summary>
+    /// 是否为尊享模型
+    /// </summary>
+    public bool IsPremium { get; set; }
 }

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Managers/AiGateWayManager.cs

@@ -85,19 +85,22 @@ public class AiGateWayManager : DomainService
                     Description = model.Description,
                     AppExtraUrl = app.ExtraUrl,
                     ModelExtraInfo = model.ExtraInfo,
-                    Multiplier = model.Multiplier
+                    Multiplier = model.Multiplier,
+                    IsPremium = model.IsPremium
                 })
             .FirstAsync();
         if (aiModelDescribe is null)
         {
             throw new UserFriendlyException($"【{modelId}】模型当前版本【{modelApiType}】格式不支持");
         }
+
         // ✅ 统一处理 yi- 后缀（网关层模型规范化）
         if (!string.IsNullOrEmpty(aiModelDescribe.ModelId) &&
             aiModelDescribe.ModelId.StartsWith("yi-", StringComparison.OrdinalIgnoreCase))
         {
             aiModelDescribe.ModelId = aiModelDescribe.ModelId[3..];
         }
+
         return aiModelDescribe;
     }
 
@@ -157,13 +160,7 @@ public class AiGateWayManager : DomainService
 
             await _usageStatisticsManager.SetUsageAsync(userId.Value, sourceModelId, data.Usage, tokenId);
 
-            // 扣减尊享token包用量
-            var isPremium = await _aiModelRepository._DbQueryable
-                .Where(x => x.ModelId == request.Model)
-                .Select(x => x.IsPremium)
-                .FirstAsync();
-
-            if (isPremium)
+            if (modelDescribe.IsPremium)
             {
                 var totalTokens = data.Usage?.TotalTokens ?? 0;
                 if (totalTokens > 0)
@@ -322,12 +319,7 @@ public class AiGateWayManager : DomainService
         // 扣减尊享token包用量
         if (userId is not null)
         {
-            var isPremium = await _aiModelRepository._DbQueryable
-                .Where(x => x.ModelId == request.Model)
-                .Select(x => x.IsPremium)
-                .FirstAsync();
-
-            if (isPremium)
+            if (modelDescribe.IsPremium)
             {
                 var totalTokens = tokenUsage.TotalTokens ?? 0;
                 if (totalTokens > 0)
@@ -390,15 +382,8 @@ public class AiGateWayManager : DomainService
 
             await _usageStatisticsManager.SetUsageAsync(userId, model, response.Usage, tokenId);
 
-            // 扣减尊享token包用量
+            // 直接扣减尊享token包用量
             if (userId is not null)
-            {
-                var isPremium = await _aiModelRepository._DbQueryable
-                    .Where(x => x.ModelId == request.Model)
-                    .Select(x => x.IsPremium)
-                    .FirstAsync();
-
-                if (isPremium)
             {
                 var totalTokens = response.Usage.TotalTokens ?? 0;
                 if (totalTokens > 0)
@@ -407,7 +392,6 @@ public class AiGateWayManager : DomainService
                 }
             }
         }
-        }
         catch (Exception e)
         {
             var errorContent = $"图片生成Ai异常，异常信息：\n当前Ai模型：{request.Model}\n异常信息：{e.Message}\n异常堆栈：{e}";
@@ -585,7 +569,7 @@ public class AiGateWayManager : DomainService
 
             await _usageStatisticsManager.SetUsageAsync(userId.Value, sourceModelId, data.TokenUsage, tokenId);
 
-            // 扣减尊享token包用量
+            // 直接扣减尊享token包用量
             var totalTokens = data.TokenUsage.TotalTokens ?? 0;
             if (totalTokens > 0)
             {
@@ -677,7 +661,7 @@ public class AiGateWayManager : DomainService
 
         await _usageStatisticsManager.SetUsageAsync(userId, sourceModelId, tokenUsage, tokenId);
 
-        // 扣减尊享token包用量
+        // 直接扣减尊享token包用量
         if (userId.HasValue && tokenUsage is not null)
         {
             var totalTokens = tokenUsage.TotalTokens ?? 0;
@@ -750,7 +734,7 @@ public class AiGateWayManager : DomainService
 
             await _usageStatisticsManager.SetUsageAsync(userId.Value, sourceModelId, tokenUsage, tokenId);
 
-            // 扣减尊享token包用量
+            // 直接扣减尊享token包用量
             var totalTokens = tokenUsage.TotalTokens ?? 0;
             if (totalTokens > 0)
             {
@@ -795,6 +779,7 @@ public class AiGateWayManager : DomainService
         {
             request.Model = request.Model[3..];
         }
+
         var completeChatResponse = chatService.ResponsesStreamAsync(modelDescribe, request, cancellationToken);
         ThorUsageResponse? tokenUsage = null;
         try
@@ -848,7 +833,7 @@ public class AiGateWayManager : DomainService
 
         await _usageStatisticsManager.SetUsageAsync(userId, sourceModelId, tokenUsage, tokenId);
 
-        // 扣减尊享token包用量
+        // 直接扣减尊享token包用量
         if (userId.HasValue && tokenUsage is not null)
         {
             var totalTokens = tokenUsage.TotalTokens ?? 0;
@@ -908,7 +893,7 @@ public class AiGateWayManager : DomainService
 
             await _usageStatisticsManager.SetUsageAsync(userId.Value, modelId, tokenUsage, tokenId);
 
-            // 扣减尊享token包用量
+            // 直接扣减尊享token包用量
             var totalTokens = tokenUsage.TotalTokens ?? 0;
             if (totalTokens > 0)
             {
@@ -992,7 +977,7 @@ public class AiGateWayManager : DomainService
 
         await _usageStatisticsManager.SetUsageAsync(userId, modelId, tokenUsage, tokenId);
 
-        // 扣减尊享token包用量
+        // 直接扣减尊享token包用量
         if (userId.HasValue && tokenUsage is not null)
         {
             var totalTokens = tokenUsage.TotalTokens ?? 0;
@@ -1004,6 +989,7 @@ public class AiGateWayManager : DomainService
     }
 
     private const string ImageStoreHost = "https://ccnetcore.com/prod-api";
+
     /// <summary>
     /// Gemini 生成(Image)-非流式-缓存处理
     /// 返回图片绝对路径
@@ -1060,7 +1046,7 @@ public class AiGateWayManager : DomainService
 
         await _usageStatisticsManager.SetUsageAsync(userId, modelId, tokenUsage, tokenId);
 
-        // 扣减尊享token包用量
+        // 直接扣减尊享token包用量
         var totalTokens = tokenUsage.TotalTokens ?? 0;
         if (totalTokens > 0)
         {