步骤 4：使用会话状态添加记忆和个性化中title1部分

[EchoTouch-moon]

Describe the bug

In the Chinese translation of the documentation, specifically in "步骤 4：使用会话状态添加记忆和个性化" (Step 4: Adding memory and personalization using session state), there is a variable name inconsistency in the provided code snippet.

The session service is incorrectly initialized as session_service_state_demo:

Python
session_service_state_demo = InMemorySessionService()
However, later in the code when creating the runner_root_stateful, it attempts to pass a variable named session_service_stateful, which is not defined:

Python
runner_root_stateful = Runner(
agent=root_agent_stateful,
app_name=APP_NAME,
session_service=session_service_stateful # This causes a NameError
)
This mismatch causes a NameError when users copy and run the code directly. The English version of the documentation is correct and uses session_service_stateful consistently.

To Reproduce

Steps to reproduce the behavior:

Go to the Chinese documentation page for the ADK (specifically the section "步骤 4：使用会话状态添加记忆和个性化").

Copy the Python code snippet provided in that section.

Run the code in a Python environment.

See error: NameError: name 'session_service_stateful' is not defined.

Expected behavior

The initialization code in the Chinese documentation should be updated to match the English version:

Python
session_service_stateful = InMemorySessionService()
This ensures the variable name is consistent with the parameter passed to the Runner class, allowing the code to execute successfully.

Screenshots

Versions

OS: Windows 11

ADK version: latest

Python version: 3.10

Additional context

This appears to be purely a translation/localization error, as the original English documentation works perfectly. Updating the variable name in the localized markdown/doc file will fix the issue.