test(06-12): register blocked four-facing prefab reuse expectation (G-06-03-A)

- add correct-expectation it.skip for four facing codes reusing one prefab
- append 06-12 coverage-gap section to 06-COVERAGE-MAP.md

.planning/phases/06-unit-tests/06-COVERAGE-MAP.md

@@ -299,3 +299,19 @@ D-40：真实英雄操作经 `replay.route.add(...)`（mover 方向步）录制
 本计划**无新增码**，复用既有可达码（84/121/127/128/129/131 等的既有覆盖保持不变），
 不削弱也不删除任何既有用例或跳过；无 `it.skip`/`it.todo` 新增，
 `06-TEST-FINDINGS.md` 无 `#06-11-N` 条目。
+
+## 06-12 录像与 enemy 模型缺口补测（D-46）
+
+本计划为**覆盖缺口补测**（G-06-04-B、G-06-04-A、G-06-03-A），**不引入新码**，复用既有可达码
+（148/152/155/163 等既有覆盖保持不变）；阶段结构为 构件（异质多命令序列读回）→
+组合（多字节 bigint/int64 混合正确预期 skip）→ 完整（四朝向复用同一 prefab 生成独立怪物的正确预期 skip）。
+
+| 缺口 | 用例 | 文件 | 计划 |
+| --- | --- | --- | --- |
+| G-06-04-B | `reads back a heterogeneous command sequence through both the stream and get`、`reads back the heterogeneous sequence after widening to uint16`、`reads back a heterogeneous sequence after deleting its first step` | `data-common/src/replay/array.test.ts` | 06-12 |
+| G-06-04-A | `round-trips a heterogeneous step mixing a multi-byte bigint and an int64 value`（`it.skip`，受 `#06-04-1`/`#06-04-2` 阻塞） | `data-common/src/replay/array.test.ts` | 06-12 |
+| G-06-03-A | `creates four independent enemies from one prefab reused by four facing codes`（`it.skip`，受 `#06-03-1` 阻塞） | `data-base/src/enemy/manager.test.ts` | 06-12 |
+
+本计划**无新增码**，复用既有可达码；两条为受阻塞的正确预期 `it.skip`（锚定既有
+`#06-04-1`/`#06-04-2`/`#06-03-1`，不新建 finding 条目），G-06-04-B 为可跑绿；
+不削弱也不删除任何既有用例或跳过，`06-TEST-FINDINGS.md` 无新增 `#06-12-N` 缺陷条目。

packages-user/data-base/src/enemy/manager.test.ts

@@ -277,6 +277,70 @@ describe('EnemyManager reuse mapping', () => {
         expect(manager.createEnemy(100)!.id).toBe('slime');
         expect(manager.createEnemyById('slime-reuse')!.id).toBe('slime');
     });
+
+    // 疑似 bug：复用映射未接入 createEnemy/createEnemyById，四朝向复用同一模板各自生成独立怪物的链路不可用，详见 06-TEST-FINDINGS.md #06-03-1，修复后取消 skip
+    it.skip('creates four independent enemies from one prefab reused by four facing codes', () => {
+        const manager = createManager();
+        manager.addPrefab(createPrefab(1, 'slime'));
+        manager.reusePrefab(1, 100, 'slime-up');
+        manager.reusePrefab(1, 101, 'slime-right');
+        manager.reusePrefab(1, 102, 'slime-down');
+        manager.reusePrefab(1, 103, 'slime-left');
+
+        const source = manager.getPrefab(1);
+
+        for (const code of [100, 101, 102, 103]) {
+            expect(manager.getPrefab(code)).toBe(source);
+        }
+        for (const id of [
+            'slime-up',
+            'slime-right',
+            'slime-down',
+            'slime-left'
+        ]) {
+            expect(manager.getPrefabById(id)).toBe(
+                manager.getPrefabById('slime')
+            );
+        }
+
+        const created = [100, 101, 102, 103].map(code =>
+            manager.createEnemy(code)
+        );
+
+        expect(created.every(enemy => enemy !== null)).toBe(true);
+        expect(created.map(enemy => enemy!.id)).toEqual([
+            'slime',
+            'slime',
+            'slime',
+            'slime'
+        ]);
+        expect(new Set(created).size).toBe(4);
+        expect(created.every(enemy => enemy !== source)).toBe(true);
+
+        created[0]!.setAttribute('hp', 99);
+
+        expect(
+            created.slice(1).map(enemy => enemy!.getAttribute('hp'))
+        ).toEqual([20, 20, 20]);
+        expect(manager.getPrefab(1)!.getAttribute('hp')).toBe(20);
+
+        const createdById = [
+            'slime-up',
+            'slime-right',
+            'slime-down',
+            'slime-left'
+        ].map(id => manager.createEnemyById(id));
+
+        expect(createdById.every(enemy => enemy !== null)).toBe(true);
+        expect(createdById.every(enemy => enemy!.id === 'slime')).toBe(true);
+        expect(new Set(createdById).size).toBe(4);
+
+        createdById[0]!.setAttribute('hp', 77);
+
+        expect(
+            createdById.slice(1).map(enemy => enemy!.getAttribute('hp'))
+        ).toEqual([20, 20, 20]);
+    });
 });
 
 describe('EnemyManager modifyPrefabAttribute', () => {