fix(07-13): prune deleted views and empty sourceless points

- deleteEnemy removes the deleted view from point.affectedBy and drops its point.damages entry so lazy refreshIndex never revisits a dead view (IN-01)
- deleteMapDamage removes the sourcelessDamage IPointInfo once both damages and affectedBy are empty, keeping markDirtyIndex
- add IN-01 regressions: dead-view witness (getDamageWithoutCheck not called) and the two arms of the sourceless empty-point cleanup

packages-user/data-system/src/combat/mapDamage.test.ts

@@ -404,6 +404,35 @@ describe('MapDamage sourceless damage', () => {
             ...fixture.damage.getSeparatedDamage({ x: 3, y: 2 })
         ]).toHaveLength(0);
     });
+
+    // 验证删除无来源伤害的两条臂：删一条保留剩余，删净后返回空且可再次添加（IN-01 空点清理）
+    it('prunes the sourceless point once every damage is deleted', () => {
+        const fixture = createFixture();
+        fixture.damage.useReducer(fixture.reducer);
+        const first = createInfo(5);
+        const second = createInfo(3);
+        fixture.damage.addMapDamage(fixture.locator, first);
+        fixture.damage.addMapDamage(fixture.locator, second);
+        expect(fixture.damage.getReducedDamage(fixture.locator)?.damage).toBe(
+            8
+        );
+
+        fixture.damage.deleteMapDamage(fixture.locator, first);
+        expect(fixture.damage.getReducedDamage(fixture.locator)?.damage).toBe(
+            3
+        );
+
+        fixture.damage.deleteMapDamage(fixture.locator, second);
+        expect(fixture.damage.getReducedDamage(fixture.locator)).toBeNull();
+        expect([
+            ...fixture.damage.getSeparatedDamage(fixture.locator)
+        ]).toHaveLength(0);
+
+        fixture.damage.addMapDamage(fixture.locator, createInfo(6));
+        expect(fixture.damage.getReducedDamage(fixture.locator)?.damage).toBe(
+            6
+        );
+    });
 });
 
 describe('MapDamage sourced conversion and reduction', () => {
@@ -545,6 +574,22 @@ describe('MapDamage sourced conversion and reduction', () => {
         ]).toHaveLength(0);
     });
 
+    // 验证删除怪物后惰性重算不再触达被删视图（IN-01 的删除端剪除）
+    it('does not rebuild damage from a deleted view after pruning', () => {
+        const fixture = createFixture();
+        fixture.damage.useReducer(fixture.reducer);
+        fixture.damage.useConverter(fixture.converter);
+        const spy = vi.spyOn(fixture.damageView, 'getDamageWithoutCheck');
+
+        fixture.damage.deleteEnemy(fixture.view);
+
+        expect(fixture.damage.getReducedDamage(fixture.locator)).toBeNull();
+        expect(spy).not.toHaveBeenCalled();
+        expect([
+            ...fixture.damage.getSeparatedDamage(fixture.locator)
+        ]).toHaveLength(0);
+    });
+
     // 验证伤害来源消失后旧坐标不再返回幽灵伤害（CR-02 视图集变空）
     it('drops ghost damage when the enemy view set becomes empty', () => {
         const fixture = createFixture();

packages-user/data-system/src/combat/mapDamage.ts

@@ -116,6 +116,9 @@ export class MapDamage<TEnemy, THero> implements IMapDamage<TEnemy, THero> {
         const current = this.sourcelessDamage.get(index);
         if (!current) return;
         current.damages.delete(info);
+        if (current.damages.size === 0 && current.affectedBy.size === 0) {
+            this.sourcelessDamage.delete(index);
+        }
         this.markDirtyIndex(index);
     }
 
@@ -157,6 +160,10 @@ export class MapDamage<TEnemy, THero> implements IMapDamage<TEnemy, THero> {
             affecting.damages.forEach((dam, index) => {
                 this.damageStore.delete(dam);
                 collection.add(index);
+                const point = this.sourcedDamage.get(index);
+                if (!point) return;
+                point.affectedBy.delete(viewItem);
+                point.damages.delete(dam);
             });
             this.viewStore.delete(viewItem);
         }