chore: add documentation comments and stylecop rules

src/Application/TakeoutSaaS.Application/App/Tenants/Handlers/CheckTenantQuotaCommandHandler.cs

@@ -24,18 +24,20 @@ public sealed class CheckTenantQuotaCommandHandler(
     /// <inheritdoc />
     public async Task<QuotaCheckResultDto> Handle(CheckTenantQuotaCommand request, CancellationToken cancellationToken)
     {
+        // 1. 校验请求参数
         if (request.Delta <= 0)
         {
             throw new BusinessException(ErrorCodes.BadRequest, "配额消耗量必须大于 0");
         }
 
+        // 2. 校验租户上下文
         var currentTenantId = tenantProvider.GetCurrentTenantId();
         if (currentTenantId == 0 || currentTenantId != request.TenantId)
         {
             throw new BusinessException(ErrorCodes.Forbidden, "租户上下文不匹配，请在请求头 X-Tenant-Id 指定目标租户");
         }
 
-        // 1. 获取租户与当前订阅。
+        // 3. 获取租户与当前订阅
         _ = await tenantRepository.FindByIdAsync(request.TenantId, cancellationToken)
             ?? throw new BusinessException(ErrorCodes.NotFound, "租户不存在");
 
@@ -50,7 +52,7 @@ public sealed class CheckTenantQuotaCommandHandler(
 
         var limit = ResolveLimit(package, request.QuotaType);
 
-        // 2. 加载配额使用记录并计算。
+        // 4. 加载配额使用记录并计算
         var usage = await quotaUsageRepository.FindAsync(request.TenantId, request.QuotaType, cancellationToken)
                     ?? new TenantQuotaUsage
                     {
@@ -69,12 +71,14 @@ public sealed class CheckTenantQuotaCommandHandler(
             throw new BusinessException(ErrorCodes.Conflict, $"{request.QuotaType} 配额不足");
         }
 
+        // 5. 更新使用并保存
         usage.LimitValue = limit ?? usage.LimitValue;
         usage.UsedValue = usedAfter;
         usage.ResetCycle ??= ResolveResetCycle(request.QuotaType);
 
         await PersistUsageAsync(usage, quotaUsageRepository, cancellationToken);
 
+        // 6. 返回结果
         return new QuotaCheckResultDto
         {
             QuotaType = request.QuotaType,