diff --git a/packages-user/data-state/src/enemy/calculator.ts b/packages-user/data-state/src/enemy/calculator.ts
index 7563a18..d81c8e3 100644
--- a/packages-user/data-state/src/enemy/calculator.ts
+++ b/packages-user/data-state/src/enemy/calculator.ts
@@ -137,7 +137,13 @@ export class MainDamageCalculator implements IDamageCalculator<
         damage -= mdef;
 
         // 未开启负伤时，如果伤害为负，则设为 0
-        if (!core.flags.enableNegativeDamage && damage < 0) {
+        if (
+            !handler.state.flags.getFieldValueDefaults(
+                'enableNegativeDamage',
+                false
+            ) &&
+            damage < 0
+        ) {
             damage = 0;
         }
 
diff --git a/packages-user/data-state/test/dataClosure.test.ts b/packages-user/data-state/test/dataClosure.test.ts
new file mode 100644
index 0000000..a86b42e
--- /dev/null
+++ b/packages-user/data-state/test/dataClosure.test.ts
@@ -0,0 +1,247 @@
+import { describe, expect, it, vi } from 'vitest';
+import {
+    IEnemyAttr,
+    IReplaySandbox,
+    IHeroAttr,
+    ReplaySystem,
+    SaveCompression
+} from '@user/data-common';
+import { IEnemy, IReadonlyHeroAttribute } from '@user/data-base';
+import { IReadonlyEnemyHandler } from '@user/data-system';
+import { createCoreState, CoreState } from '../src/core';
+import { MainDamageCalculator } from '../src/enemy/calculator';
+import { REPLAY_COMMAND_ORDER, ReplayCommandCode } from '../src/replay/types';
+import { createClosedLoopFixture } from './fixtures/closed-loop';
+
+vi.hoisted(() => {
+    Map.prototype.getOrInsert ??= function <K, V>(
+        this: Map<K, V>,
+        key: K,
+        value: V
+    ): V {
+        const existing = this.get(key);
+        if (existing !== undefined) return existing;
+        this.set(key, value);
+        return value;
+    };
+    Map.prototype.getOrInsertComputed ??= function <K, V>(
+        this: Map<K, V>,
+        key: K,
+        callback: (key: K) => V
+    ): V {
+        const existing = this.get(key);
+        if (existing !== undefined) return existing;
+        const value = callback(key);
+        this.set(key, value);
+        return value;
+    };
+});
+
+interface IManualReplaySandbox extends IReplaySandbox {
+    pausing: boolean;
+    playing: boolean;
+}
+
+function createEnemy(): IEnemy<IEnemyAttr> {
+    let attrs: IEnemyAttr = {
+        hp: 20,
+        atk: 8,
+        def: 5,
+        money: 2,
+        exp: 3,
+        point: 1,
+        guard: new Set()
+    };
+    const enemy: IEnemy<IEnemyAttr> = {
+        id: 'closure-enemy',
+        code: 1,
+        getSpecial: () => null,
+        hasSpecial: () => false,
+        iterateSpecials: () => [],
+        getAttribute: key => attrs[key],
+        cloneAttributes: () => structuredClone(attrs),
+        clone: () => {
+            const copy = createEnemy();
+            copy.copyFrom(enemy);
+            return copy;
+        },
+        addSpecial: () => {},
+        deleteSpecial: () => {},
+        setAttribute: (key, value) => {
+            attrs[key] = value;
+        },
+        addAttribute: (key, value) => {
+            attrs[key] = (attrs[key] as number) + value;
+        },
+        copyFrom: other => {
+            attrs = other.cloneAttributes();
+        },
+        saveState: () => ({
+            attrs: structuredClone(attrs),
+            specials: new Map()
+        }),
+        loadState: state => {
+            attrs = structuredClone(state.attrs);
+        }
+    };
+    return enemy;
+}
+
+function addEnemy(state: CoreState): IEnemy<IEnemyAttr> {
+    state.enemyManager.addPrefab(createEnemy());
+    const enemy = state.enemyManager.createEnemy(1);
+    if (!enemy) throw new Error('closure enemy was not created');
+    return enemy;
+}
+
+async function waitForEnded(sandbox: IReplaySandbox): Promise<void> {
+    for (let index = 0; index < 1000 && !sandbox.ended; index++) {
+        await new Promise<void>(resolve => setTimeout(resolve, 0));
+    }
+    if (!sandbox.ended) throw new Error('closure replay did not end');
+}
+
+describe('DATA-01 closure', () => {
+    // 验证敌人管理器能够创建敌人、修改属性并完成独立存档恢复
+    it('creates, mutates, and saves an enemy through the public manager', () => {
+        const state = createCoreState();
+        const enemy = addEnemy(state);
+
+        enemy.setAttribute('hp', 31);
+        const saved = enemy.saveState(SaveCompression.NoCompression);
+        enemy.setAttribute('hp', 2);
+        enemy.loadState(saved, SaveCompression.NoCompression);
+
+        expect(enemy.getAttribute('hp')).toBe(31);
+        expect(enemy.getAttribute('atk')).toBe(8);
+        expect(enemy.id).toBe('closure-enemy');
+    });
+
+    // 验证 Flag 的设置读取和 save/load round trip 保留字段值
+    it('round-trips Flag values through save and load', () => {
+        const state = createCoreState();
+        state.flags.setFieldValue('closureScore', 7);
+        state.flags.addFieldValue('closureScore', 5);
+        const saved = state.flags.saveState(SaveCompression.NoCompression);
+
+        state.flags.setFieldValue('closureScore', 0);
+        state.flags.loadState(saved, SaveCompression.NoCompression);
+
+        expect(state.flags.getFieldValue<number>('closureScore')).toBe(12);
+        expect(state.flags.occupied('closureScore')).toBe(true);
+    });
+
+    // 验证同一敌人和勇士属性下的战斗伤害结果保持确定
+    it('computes deterministic combat damage', () => {
+        const state = createCoreState();
+        const enemy = addEnemy(state);
+        const hero = {
+            getBaseAttribute: (
+                name: keyof IHeroAttr
+            ): IHeroAttr[typeof name] => (name === 'hp' ? 100 : 0),
+            getFinalAttribute: (
+                name: keyof IHeroAttr
+            ): IHeroAttr[typeof name] => {
+                if (name === 'atk') return 20;
+                if (name === 'def') return 5;
+                return 0;
+            }
+        } as IReadonlyHeroAttribute<IHeroAttr>;
+        const handler = {
+            enemy,
+            context: state.enemyContext,
+            locator: { x: 0, y: 0 },
+            hero,
+            state
+        } as IReadonlyEnemyHandler<IEnemyAttr, IHeroAttr>;
+
+        const calculator = new MainDamageCalculator();
+        const first = calculator.calculate(handler);
+        const second = calculator.calculate(handler);
+
+        expect(first).not.toBeNull();
+        expect(second).toEqual(first);
+        expect(first?.damage).toBe(3);
+        expect(first?.turn).toBe(2);
+    });
+
+    // 验证可存档勇士内容在修改后能够恢复保存时的属性快照
+    it('round-trips a saveable hero state', () => {
+        const state = createCoreState();
+        const hero = state.hero.getModifiableAttribute();
+        hero.set('hp', 88);
+        const saved = state.hero.saveState(SaveCompression.NoCompression);
+
+        hero.set('hp', 1);
+        state.hero.loadState(saved, SaveCompression.NoCompression);
+
+        expect(state.hero.attribute.getBaseAttribute('hp')).toBe(88);
+    });
+
+    // 验证 trigger/event executor 等待事件完成并应用事件层状态变化
+    it('executes a trigger event and applies its awaited mutation', async () => {
+        const fixture = createClosedLoopFixture();
+        expect(fixture.map.eventLayer?.getBlock(1, 0)).toBe(1);
+
+        fixture.sandbox.play();
+        await waitForEnded(fixture.sandbox);
+
+        expect(fixture.sandbox.ended).toBe(true);
+        expect(fixture.eventCompleted()).toBe(true);
+        expect(fixture.map.eventLayer?.getBlock(1, 0)).toBe(2);
+        expect(fixture.state.eventStore.getEvent('mutate-map')).not.toBeNull();
+    });
+
+    // 验证 replay 注册顺序、参数路线、异步完成与首个失败停止行为
+    it('preserves replay order, awaits completion, and stops on failure', async () => {
+        const state = createCoreState();
+        expect(
+            REPLAY_COMMAND_ORDER.every(code =>
+                state.replaySystem.getCommand(code)
+            )
+        ).toBe(true);
+        expect(REPLAY_COMMAND_ORDER).toEqual([
+            ReplayCommandCode.Up,
+            ReplayCommandCode.Right,
+            ReplayCommandCode.Down,
+            ReplayCommandCode.Left,
+            ReplayCommandCode.AutoPathfindToPoint,
+            ReplayCommandCode.UseItem,
+            ReplayCommandCode.Equip,
+            ReplayCommandCode.Unequip
+        ]);
+
+        state.replaySystem.record(ReplayCommandCode.Right, 4, 'route');
+        expect(state.replaySystem.route.get(0)).toMatchObject({
+            command: ReplayCommandCode.Right,
+            params: [4, 'route']
+        });
+
+        const fixture = createClosedLoopFixture();
+        fixture.sandbox.play();
+        await waitForEnded(fixture.sandbox);
+        expect(fixture.eventCompleted()).toBe(true);
+
+        const replay = new ReplaySystem();
+        let laterExecuted = false;
+        replay.registerCommand(0, { execute: async () => false });
+        replay.registerCommand(1, {
+            execute: async () => {
+                laterExecuted = true;
+                return true;
+            }
+        });
+        replay.record(0);
+        replay.record(1);
+        const sandbox = replay.createReplaySandbox({
+            route: replay.route,
+            reseter: { reset: () => {} }
+        }) as IManualReplaySandbox;
+        sandbox.pausing = false;
+        sandbox.playing = true;
+
+        await expect(sandbox.step()).resolves.toBe(false);
+        expect(sandbox.getReplayed()).toBe(1);
+        expect(laterExecuted).toBe(false);
+    });
+});