feat(companion): 全面扩展同城生活陪伴体系（陪吃·陪喝·陪玩），完成TDD测试与安全核销闭环

server/src/core/companion/service-category.ts

@@ -0,0 +1,94 @@
+/**
+ * 陪伴服务赛道与品类管理核心
+ * 支持【线上游戏陪玩】与【同城线下陪玩·陪吃·陪喝】多维服务形态
+ */
+
+export enum CompanionTrack {
+  ONLINE_GAME = 'ONLINE_GAME',       // 线上游戏陪玩 (王者/和平/LOL等)
+  OFFLINE_PLAY = 'OFFLINE_PLAY',     // 线下同城陪玩 (桌游/剧本杀/运动/漫展)
+  OFFLINE_MEAL = 'OFFLINE_MEAL',     // 线下同城陪吃 (网红探店/火锅/餐厅饭搭子)
+  OFFLINE_DRINK = 'OFFLINE_DRINK',   // 线下同城陪喝 (咖啡下午茶/茶室清吧)
+}
+
+export enum ExpenseBurdenType {
+  AA_SHARE = 'AA_SHARE',       // 现场消费 AA 制各自付
+  BUYER_TREAT = 'BUYER_TREAT', // 客户全包请客
+  SELF_CARE = 'SELF_CARE',     // 大神自理
+}
+
+export interface ServiceItem {
+  id: string;
+  track: CompanionTrack;
+  title: string;
+  gameName?: string;
+  city?: string;
+  venueType?: string;
+  unitPriceCents: number;
+  unit: string;
+}
+
+export interface CreateServiceItemDto {
+  track: CompanionTrack;
+  title: string;
+  gameName?: string;
+  city?: string;
+  venueType?: string;
+  unitPriceCents: number;
+  unit: string;
+}
+
+// 严禁私人隐蔽场所列表 (安全风控红线)
+const UNSAFE_VENUE_PATTERNS = [/私人住宅/, /私人公寓/, /酒店客房/, /私密/];
+
+export class ServiceCategoryManager {
+  private idCounter = 1000;
+
+  getAllTracks(): CompanionTrack[] {
+    return [
+      CompanionTrack.ONLINE_GAME,
+      CompanionTrack.OFFLINE_PLAY,
+      CompanionTrack.OFFLINE_MEAL,
+      CompanionTrack.OFFLINE_DRINK,
+    ];
+  }
+
+  getExpenseBurdenTypes(): ExpenseBurdenType[] {
+    return [
+      ExpenseBurdenType.AA_SHARE,
+      ExpenseBurdenType.BUYER_TREAT,
+      ExpenseBurdenType.SELF_CARE,
+    ];
+  }
+
+  createServiceItem(dto: CreateServiceItemDto): ServiceItem {
+    if (dto.track === CompanionTrack.ONLINE_GAME) {
+      if (!dto.gameName || dto.gameName.trim() === '') {
+        throw new Error('线上游戏陪玩服务必须指定具体游戏品类');
+      }
+    } else {
+      // 线下陪玩、陪吃、陪喝安全校验
+      if (!dto.city || dto.city.trim() === '') {
+        throw new Error('线下陪伴服务必须指定服务城市');
+      }
+
+      if (dto.venueType) {
+        for (const pattern of UNSAFE_VENUE_PATTERNS) {
+          if (pattern.test(dto.venueType)) {
+            throw new Error('安全风控触发: 线下陪伴服务仅限在合法的公开商业场所履约，禁止私人住宅或私密空间');
+          }
+        }
+      }
+    }
+
+    return {
+      id: `srv_${++this.idCounter}`,
+      track: dto.track,
+      title: dto.title,
+      gameName: dto.gameName,
+      city: dto.city,
+      venueType: dto.venueType,
+      unitPriceCents: dto.unitPriceCents,
+      unit: dto.unit,
+    };
+  }
+}