feat(finance): add cost management backend module

src/Application/TakeoutSaaS.Application/App/Finance/Cost/Queries/GetFinanceCostAnalysisQuery.cs

@@ -0,0 +1,31 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Finance.Cost.Dto;
+using TakeoutSaaS.Domain.Finance.Enums;
+
+namespace TakeoutSaaS.Application.App.Finance.Cost.Queries;
+
+/// <summary>
+/// 查询成本分析页数据。
+/// </summary>
+public sealed class GetFinanceCostAnalysisQuery : IRequest<FinanceCostAnalysisDto>
+{
+    /// <summary>
+    /// 统计维度。
+    /// </summary>
+    public FinanceCostDimension Dimension { get; init; } = FinanceCostDimension.Tenant;
+
+    /// <summary>
+    /// 门店标识（门店维度必填）。
+    /// </summary>
+    public long? StoreId { get; init; }
+
+    /// <summary>
+    /// 目标月份（UTC 每月第一天）。
+    /// </summary>
+    public DateTime CostMonth { get; init; } = DateTime.UtcNow;
+
+    /// <summary>
+    /// 趋势月份数量。
+    /// </summary>
+    public int TrendMonthCount { get; init; } = 6;
+}