feat: 完善对象存储上传与真实条码二维码引擎，彻底剥离保底Mock数据

server/tests/activity.spec.ts

@@ -192,5 +192,205 @@ describe('ActivityService (TDD 测试套件: 活动项目与4位核销码)', ()
       expect(check.success).toBe(true);
     });
   });
+
+  describe('5. 房主手动调价与加赏加急机制 (提价/降价与已报名成员差额补偿)', () => {
+    it('发单500元/人招募4人，2人报名后房主手动提价至800元/人，全员同享新高价差额', () => {
+      // 1. 房主发起4人单，每人500元 (50000分)
+      const activity = activityService.createActivity({
+        creatorId: 1001,
+        title: '【高端陪玩】四排吃鸡车队高额赏金局',
+        gameCategory: '热门电竞',
+        payType: ActivityPayType.PROJECT_PAY,
+        perPersonFeeCents: 50000,
+        maxParticipants: 4,
+        allowDynamicPrice: true,
+        priceAdjustRule: 'UNIFIED_HIGH',
+      });
+
+      // 2. 两人报名成功
+      const p1 = activityService.joinActivity(activity.id, { userId: 2001, payAmountCents: 50000 });
+      const p2 = activityService.joinActivity(activity.id, { userId: 2002, payAmountCents: 50000 });
+      expect(activity.currentParticipants).toBe(2);
+      expect(p1.payAmountCents).toBe(50000);
+      expect(p2.payAmountCents).toBe(50000);
+
+      // 3. 房主提价至 800元/人 (80000分) 加急招募
+      const result = activityService.adjustActivityPrice({
+        activityId: activity.id,
+        operatorId: 1001,
+        newPriceCents: 80000,
+      });
+
+      expect(result.priceDiffCents).toBe(30000); // 每人加赏300元
+      expect(result.affectedParticipantsCount).toBe(2);
+      expect(result.activity.perPersonFeeCents).toBe(80000);
+      expect(result.activity.totalFeeCents).toBe(320000); // 800 * 4 = 3200元
+      expect(p1.payAmountCents).toBe(80000);
+      expect(p2.payAmountCents).toBe(80000);
+
+      // 4. 第3位新加入的成员直接按最新高价800元报名
+      const p3 = activityService.joinActivity(activity.id, { userId: 2003, payAmountCents: 80000 });
+      expect(p3.payAmountCents).toBe(80000);
+      expect(activity.currentParticipants).toBe(3);
+    });
+
+    it('非房主尝试调价应抛出权限异常', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '测试活动',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.PROJECT_PAY,
+        perPersonFeeCents: 50000,
+        maxParticipants: 4,
+      });
+
+      expect(() => {
+        activityService.adjustActivityPrice({
+          activityId: act.id,
+          operatorId: 2002, // 非房主
+          newPriceCents: 80000,
+        });
+      }).toThrow('只有发起人有权调整活动出价');
+    });
+  });
+
+  describe('6. 房主解散与取消组局 (0人报名秒撤 / 有人报名退款全员)', () => {
+    it('0人报名时，房主可直接解散取消组局', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '测试酸汤火锅局',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 5000,
+        maxParticipants: 4,
+      });
+
+      const result = activityService.cancelActivity({
+        activityId: act.id,
+        operatorId: 1001,
+        reason: '临时有事改期',
+      });
+
+      expect(result.success).toBe(true);
+      expect(result.status).toBe('CANCELLED');
+      expect(result.refundedCount).toBe(0);
+      expect(result.totalRefundCents).toBe(0);
+    });
+
+    it('已有搭子报名时，房主解散将全额退还已报名成员款项', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '三里屯火锅局',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 5000,
+        maxParticipants: 4,
+      });
+
+      // 两位搭子报名付款
+      activityService.joinActivity(act.id, { userId: 2001, payAmountCents: 5000 });
+      activityService.joinActivity(act.id, { userId: 2002, payAmountCents: 5000 });
+
+      const result = activityService.cancelActivity({
+        activityId: act.id,
+        operatorId: 1001,
+        reason: '突发暴雨改期',
+      });
+
+      expect(result.success).toBe(true);
+      expect(result.status).toBe('CANCELLED');
+      expect(result.refundedCount).toBe(2);
+      expect(result.totalRefundCents).toBe(10000); // 5000 * 2 = 10000分
+      expect(result.refundDetails).toEqual([
+        { userId: 2001, refundAmountCents: 5000 },
+        { userId: 2002, refundAmountCents: 5000 },
+      ]);
+    });
+
+    it('非房主尝试解散组局应抛出权限异常', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '测试活动',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 5000,
+        maxParticipants: 4,
+      });
+
+      expect(() => {
+        activityService.cancelActivity({
+          activityId: act.id,
+          operatorId: 2005, // 非房主
+        });
+      }).toThrow('只有发起人有权解散此组局');
+    });
+
+    it('已核销或已完成的活动不可再被解散', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '测试活动',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 5000,
+        maxParticipants: 2,
+      });
+      const pt = activityService.joinActivity(act.id, { userId: 2001, payAmountCents: 5000 });
+      activityService.verifyCheckin({ activityId: act.id, operatorId: 1001, verifyCode: pt.verifyCode });
+
+      expect(() => {
+        activityService.cancelActivity({
+          activityId: act.id,
+          operatorId: 1001,
+        });
+      }).toThrow('聚会已有成员到场核销，不可随意解散');
+    });
+  });
+
+  describe('7. 已报名成员主动退席与名额释放', () => {
+    it('成员在未核销前可主动退席，席位人数自动回退', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '四人拼桌火锅',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 6000,
+        maxParticipants: 4,
+      });
+
+      activityService.joinActivity(act.id, { userId: 2001, payAmountCents: 6000 });
+      activityService.joinActivity(act.id, { userId: 2002, payAmountCents: 6000 });
+      expect(act.currentParticipants).toBe(2);
+
+      const leaveResult = activityService.leaveActivity({
+        activityId: act.id,
+        userId: 2001,
+      });
+
+      expect(leaveResult.success).toBe(true);
+      expect(leaveResult.refundAmountCents).toBe(6000);
+      expect(act.currentParticipants).toBe(1);
+    });
+
+    it('已核销到场的成员不可退席', () => {
+      const act = activityService.createActivity({
+        creatorId: 1001,
+        title: '四人拼桌火锅',
+        gameCategory: '同城陪吃',
+        payType: ActivityPayType.AA_PAY,
+        aaFeeCents: 6000,
+        maxParticipants: 4,
+      });
+
+      const pt = activityService.joinActivity(act.id, { userId: 2001, payAmountCents: 6000 });
+      activityService.verifyCheckin({ activityId: act.id, operatorId: 1001, verifyCode: pt.verifyCode });
+
+      expect(() => {
+        activityService.leaveActivity({
+          activityId: act.id,
+          userId: 2001,
+        });
+      }).toThrow('已核销到场，无法申请退席');
+    });
+  });
 });