diff --git a/src/core/README.md b/src/core/README.md
index 7852b5dc..90d411d3 100644
--- a/src/core/README.md
+++ b/src/core/README.md
@@ -107,7 +107,7 @@ handler 抛错，或返回值既不是字符串也不是带字符串 text 的对
 装配层将 World 构造失败限制在该 World。`start()` 抛错时不挂载；`stop()` 失败或超时会记录
 结果并继续卸载。`onOpening`、`onDelivery`、`onBatchEnd`、`onTurnEnded`、`onIdle` 异常记录
 warn；`onHandoff` 异常记录 error 并使用默认交接策略。其他钩子的异常由调用方处理。
-读取 `webUi()` 失败时省略该 World 的环境段，继续构建前缀。主循环异常退出时记录 error
-并停止定时器。启动器处理未捕获的进程异常并执行关机流程。
+读取 `webUi()` 失败时省略该 World 的环境段，继续构建前缀。主循环异常退出时记录 event 为 `loop-exit` 的 error
+并停止定时器，进程不退出;宿主按这个 event 决定是否重启。启动器处理未捕获的进程异常并执行关机流程。
 
 `instanceIsRunning(dataDir)` 只读检查实例锁对应进程是否存活，沿用锁接管时的陈旧记录判定(开机时刻、可执行文件名)，不获取或更改锁。
diff --git a/src/core/core.ts b/src/core/core.ts
index 95cf4aad..69b83b1b 100644
--- a/src/core/core.ts
+++ b/src/core/core.ts
@@ -616,7 +616,7 @@ export class Core<C extends CoreConfig = CoreConfig> {
     this.timers.start();
     this.runPromise = this.loop.run().catch((e) => {
       this.timers.stop();
-      this.log.error('主循环异常退出', { err: e });
+      this.log.emit('error', '主循环异常退出', { event: 'loop-exit', err: e });
     });
     writeRunJson(this.run, {
       bot: this.loaded.config.displayName,
diff --git a/src/core/fs-busy.ts b/src/core/fs-busy.ts
new file mode 100644
index 00000000..be8cc4b9
--- /dev/null
+++ b/src/core/fs-busy.ts
@@ -0,0 +1,20 @@
+/**
+ * Windows 上杀毒软件、索引器、同步盘会在文件刚写完时短暂独占打开它，这时 rename 与 open
+ * 报 EBUSY、EPERM 或 EACCES。做法同 graceful-fs:只在 Windows 上对这三种错误退避重试，
+ * 这里是同步调用，总共等约半秒;仍失败就照原样抛出。其他平台与其他错误立即抛出。
+ */
+const BUSY_CODES = new Set(['EBUSY', 'EPERM', 'EACCES']);
+const BACKOFF_MS = [10, 30, 60, 120, 250];
+const sleeper = new Int32Array(new SharedArrayBuffer(4));
+
+export function retryBusy<T>(op: () => T): T {
+  for (const ms of BACKOFF_MS) {
+    try {
+      return op();
+    } catch (e) {
+      if (process.platform !== 'win32' || !BUSY_CODES.has((e as NodeJS.ErrnoException).code ?? '')) throw e;
+      Atomics.wait(sleeper, 0, 0, ms);
+    }
+  }
+  return op();
+}
diff --git a/src/core/state.ts b/src/core/state.ts
index c105c564..005eef69 100644
--- a/src/core/state.ts
+++ b/src/core/state.ts
@@ -1,6 +1,7 @@
 /** Core 机械状态，持久化到 `<dataDir>/core-state.json`。 */
 import { existsSync, readFileSync, renameSync, writeFileSync } from 'node:fs';
 import { join } from 'node:path';
+import { retryBusy } from './fs-busy.ts';
 
 export interface CoreStateData {
   /** 上次截断时刻ISO */
@@ -84,7 +85,7 @@ export class CoreState {
     const tmp = this.file + '.tmp';
     writeFileSync(tmp, JSON.stringify(this.data, null, 2), 'utf8');
     // 通过 rename 原子覆盖状态文件，不先删除，避免崩溃后状态缺失。Windows 的 renameSync 使用 MoveFileExW 与 MOVEFILE_REPLACE_EXISTING 支持覆盖。
-    renameSync(tmp, this.file);
+    retryBusy(() => renameSync(tmp, this.file));
   }
 
   /**
diff --git a/src/core/timers.ts b/src/core/timers.ts
index 5fbf6e60..07433428 100644
--- a/src/core/timers.ts
+++ b/src/core/timers.ts
@@ -4,6 +4,7 @@
  */
 import { existsSync, readFileSync, renameSync, writeFileSync } from 'node:fs';
 import { join } from 'node:path';
+import { retryBusy } from './fs-busy.ts';
 import type { Logger, TimerEntry, TimersApi } from './types.ts';
 import { nullLogger, shortId } from './util.ts';
 
@@ -124,6 +125,6 @@ export class TimerStore implements TimersApi {
     const tmp = this.file + '.tmp';
     writeFileSync(tmp, JSON.stringify(this.entries, null, 2), 'utf8');
     // 通过 rename 原子覆盖，不先删除，避免崩溃后定时器全部丢失。
-    renameSync(tmp, this.file);
+    retryBusy(() => renameSync(tmp, this.file));
   }
 }
diff --git a/src/protocol/open-responses/context-log.ts b/src/protocol/open-responses/context-log.ts
index aa434e32..4992c670 100644
--- a/src/protocol/open-responses/context-log.ts
+++ b/src/protocol/open-responses/context-log.ts
@@ -1,5 +1,6 @@
 import { appendFileSync, closeSync, existsSync, fsyncSync, mkdirSync, openSync, readFileSync, renameSync, truncateSync, writeFileSync } from 'node:fs';
 import { dirname } from 'node:path';
+import { retryBusy } from '../../core/fs-busy.ts';
 import type { ContextRecord } from './context.ts';
 
 function freeze<T>(value: T): T {
@@ -64,7 +65,7 @@ export class ContextLog {
   append(entry: ContextRecord): ContextRecord {
     const next = structuredClone(entry);
     if (this.stamp && next.context.ts === undefined) next.context.ts = this.stamp();
-    appendFileSync(this.file, JSON.stringify(next) + '\n');
+    retryBusy(() => appendFileSync(this.file, JSON.stringify(next) + '\n'));
     this.entries = Object.freeze([...this.entries, freeze(next)]);
     return next;
   }
@@ -83,5 +84,5 @@ function atomicContextWrite(path: string, records: readonly ContextRecord[]): vo
     writeFileSync(fd, records.map(row => JSON.stringify(row)).join('\n') + (records.length ? '\n' : ''));
     fsyncSync(fd);
   } finally { closeSync(fd); }
-  renameSync(temporary, path);
+  retryBusy(() => renameSync(temporary, path));
 }
diff --git a/src/web/path-picker.ts b/src/web/path-picker.ts
index 8ade56d2..1cec0cd7 100644
--- a/src/web/path-picker.ts
+++ b/src/web/path-picker.ts
@@ -157,7 +157,7 @@ function titleOf(options: PathPickerOptions, t: Text): string {
 }
 
 const WINDOWS_SCRIPT = String.raw`
-[WebUI]::OutputEncoding = [System.Text.UTF8Encoding]::new($false)
+[Console]::OutputEncoding = [System.Text.UTF8Encoding]::new($false)
 Add-Type -AssemblyName System.Windows.Forms
 $title = $env:CORTICO_PICKER_TITLE
 $initial = $env:CORTICO_PICKER_INITIAL
@@ -179,9 +179,9 @@ if ($env:CORTICO_PICKER_KIND -eq 'directory') {
 }
 if ($dialog.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
   if ($env:CORTICO_PICKER_KIND -eq 'directory') {
-    [WebUI]::Out.Write($dialog.SelectedPath)
+    [Console]::Out.Write($dialog.SelectedPath)
   } else {
-    [WebUI]::Out.Write($dialog.FileName)
+    [Console]::Out.Write($dialog.FileName)
   }
 }
 $dialog.Dispose()
diff --git a/src/worlds/minecraft/chests.ts b/src/worlds/minecraft/chests.ts
index 65465ccb..d7be4efc 100644
--- a/src/worlds/minecraft/chests.ts
+++ b/src/worlds/minecraft/chests.ts
@@ -10,7 +10,13 @@ import type { ItemStack } from './terrain.ts';
 export const FURNACE_BLOCKS = ['furnace', 'smoker', 'blast_furnace'] as const;
 
 /** 箱子族方块名(能当仓库用的那些);工作台、炉子族、酿造台都不在内 */
-export const CHEST_BLOCKS = ['chest', 'trapped_chest', 'barrel', 'ender_chest'] as const;
+export const CHEST_BLOCKS = [
+  'chest', 'trapped_chest', 'barrel', 'ender_chest',
+  'shulker_box', 'white_shulker_box', 'orange_shulker_box', 'magenta_shulker_box', 'light_blue_shulker_box',
+  'yellow_shulker_box', 'lime_shulker_box', 'pink_shulker_box', 'gray_shulker_box', 'light_gray_shulker_box',
+  'cyan_shulker_box', 'purple_shulker_box', 'blue_shulker_box', 'brown_shulker_box', 'green_shulker_box',
+  'red_shulker_box', 'black_shulker_box',
+] as const;
 
 const CHEST_KINDS = new Set<string>(CHEST_BLOCKS);
 
diff --git a/tests/core/core.test.ts b/tests/core/core.test.ts
index 8d1c9c7c..d6a7cf04 100644
--- a/tests/core/core.test.ts
+++ b/tests/core/core.test.ts
@@ -88,7 +88,7 @@ describe('Core · session 声明与 fork 原语', () => {
     const { core, llm } = build();
     const exits: LogRecord[] = [];
     core.runlog.onWrite((entry) => {
-      if (entry.msg === '主循环异常退出') exits.push(entry);
+      if (entry.event === 'loop-exit') exits.push(entry);
     });
     const due: string[] = [];
     core.timers.onDue((entry) => due.push(entry.id));
diff --git a/tests/core/state.test.ts b/tests/core/state.test.ts
index 0c49fe92..f36a2918 100644
--- a/tests/core/state.test.ts
+++ b/tests/core/state.test.ts
@@ -136,3 +136,38 @@ describe('CoreState', () => {
     expect(s2.data.lastDeliveredCursor).toBe(172230);
   });
 });
+
+describe('CoreState 在 Windows 上遇到文件被短暂占用', () => {
+  let tmp: ReturnType<typeof makeTmpDir>;
+  const platform = Object.getOwnPropertyDescriptor(process, 'platform')!;
+  beforeEach(() => {
+    tmp = makeTmpDir();
+    Object.defineProperty(process, 'platform', { value: 'win32' });
+  });
+  afterEach(() => {
+    Object.defineProperty(process, 'platform', platform);
+    fsHooks.onRename = null;
+    tmp.cleanup();
+  });
+
+  const busy = () => Object.assign(new Error('EBUSY: resource busy or locked'), { code: 'EBUSY' });
+
+  it('占用几十毫秒后放开时 save 照常落盘', () => {
+    const s = new CoreState(tmp.dir);
+    s.load();
+    let left = 2;
+    fsHooks.onRename = () => { if (left-- > 0) throw busy(); };
+    s.data.lastDeliveredCursor = 42;
+    s.save();
+    const s2 = new CoreState(tmp.dir);
+    s2.load();
+    expect(s2.data.lastDeliveredCursor).toBe(42);
+  });
+
+  it('一直被占用时 save 照原样抛出', () => {
+    const s = new CoreState(tmp.dir);
+    s.load();
+    fsHooks.onRename = () => { throw busy(); };
+    expect(() => s.save()).toThrow('EBUSY');
+  });
+});