Incorrect translation for "Plan" in Chinese (Simplified) localization

What version of the IDE extension are you using?

0.4.69

What subscription do you have?

Plus

Which IDE are you using?

VS Code

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What issue are you seeing?

There is a localization error in the Chinese (Simplified) version of the extension. In "Plan Mode," the header "Plan" is incorrectly translated as "套餐" (Subscription/Combo Plan) instead of "计划" (Execution Plan).

<img width="590" height="77" alt="Image" src="https://github.com/user-attachments/assets/bc7600cd-940a-4cc8-852a-3d04f887ba86" />

What steps can reproduce the bug?

Use the extension in VS Code with the display language set to Chinese (Simplified).
Switch to the "Plan Mode" to generate an execution plan.
The "套餐" at the header of the output.

What is the expected behavior?

The header should display "计划" or just “Plan” instead of "套餐". The current translation "套餐" is typically used for pricing tiers or subscription levels, whereas in this context, it refers to a step-by-step action plan generated by the model.

Additional information

_No response_