feat(topology): 建筑支持地下楼层数，房间所在楼层下拉自动按地上+地下生成 - 建筑表新增floordown_count，建筑表单拆分地上/地下楼层数；房间所在楼层改下拉，按地上(1层/2层)与地下(负1层/负2层)自动生成、负楼层在前，选项采用数字格式

client/src/api/customerBuilding.ts

@@ -7,6 +7,7 @@ export interface CustomerBuildingInfo {
 	basicInfo?: string;
 	purpose?: string;
 	floorCount?: number;
+	floorDownCount?: number;
 	createdAt: string;
 }
 
@@ -30,6 +31,7 @@ export interface CustomerBuildingCreateParams {
 	basicInfo?: string;
 	purpose?: string;
 	floorCount?: number;
+	floorDownCount?: number;
 }
 
 export interface CustomerBuildingUpdateParams {
@@ -38,6 +40,7 @@ export interface CustomerBuildingUpdateParams {
 	basicInfo?: string;
 	purpose?: string;
 	floorCount?: number;
+	floorDownCount?: number;
 }
 
 export const customerBuildingApi = {