manager 重启后无法恢复 || manager cannot be restored after restarting

### Bug Description

k8s环境下主动杀掉 manager pod：
1. manager 将处于无限重启，无法恢复，且与 manager 的所有对话都将失败
2. 客户端重新登陆也将异常

### Steps to Reproduce

1. admin 登陆 element web, 与 manager 进行对话
2. k8s 环境下主动杀掉 pod manager，使其重建
3. admin 重新与 manager 对话

### AI Analysis

_No response_

### Relevant Logs

```shell

```

### Component

Manager Agent

### Version / Commit

_No response_

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### Bug Description

Actively kill the manager pod in k8s environment:
1. The manager will restart indefinitely and cannot be restored, and all conversations with the manager will fail.
2. The client will also be abnormal when logging in again.

### Steps to Reproduce

1. The admin logs in to element web and talks to the manager.
2. Actively kill the pod manager in k8s environment and rebuild it
3. Admin talks to manager again

### AI Analysis

_No response_

### Relevant Logs

```shell

```

### Component

Manager Agent

### Version/Commit

_No response_