[Bug] Instead of installing latest version of an extension, install an older one using cli

从由 code-server --install-extension 调用的 code-server CLI 路径开始，使用详细日志和未指定版本的 charliermarsh.ruff 复现。将其版本解析与显式指定 @2026.34.0 的情况进行比较；当未指定版本的安装选择最新的扩展版本并且仍能正确安装其依赖项时，即完成。

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser:
• Local OS:
• Remote OS: Ubuntu
• Remote Architecture: x86_64
• code-server --version: 4.107.1 8c077bf605a76ebb600d23b71e21c8756a2aee2a with Code 1.107.1

Steps to Reproduce

Using the cli (example with ruff extension)

code-server --install-extension charliermarsh.ruff

Expected

I expect the latest version to be installed eg 2026.34.0. However an older one is installed : 2022.0.17

Actual

The newest version is installed only if I specify it.

code-server --install-extension charliermarsh.ruff@2026.34.0 --verbose

I observe the same behavior for other extensions like continue.continue or hediet.vscode-drawio.

Logs

$ code-server --install-extension charliermarsh.ruff --verbose
[2026-01-12T12:21:41.519Z] debug Found VS Code arguments; spawning VS Code CLI
[2026-01-12T12:21:41.521Z] debug Running Code CLI
Installing extensions...
Installing extension 'charliermarsh.ruff'...
Extension 'ms-python.vscode-python-envs' v1.16.0 was successfully installed.
Extension 'charliermarsh.ruff' v2022.0.17 was successfully installed.
Extension 'ms-python.debugpy' v2024.0.0 was successfully installed.
Extension 'ms-python.python' v2026.0.0 was successfully installed.

$ code-server --install-extension charliermarsh.ruff@2026.34.0 --verbose
[2026-01-12T12:41:33.475Z] debug Found VS Code arguments; spawning VS Code CLI
[2026-01-12T12:41:33.476Z] debug Running Code CLI
Installing extensions...
Installing extension 'charliermarsh.ruff' v2026.34.0...
Extension 'ms-python.python' v2026.0.0 was successfully installed.
Extension 'ms-python.vscode-python-envs' v1.16.0 was successfully installed.
Extension 'ms-python.debugpy' v2024.0.0 was successfully installed.
Extension 'charliermarsh.ruff' v2026.34.0 was successfully installed.

Screenshot/Video

No response

Does this bug reproduce in native VS Code?

I did not test native VS Code

Does this bug reproduce in VS Code web?

I did not test VS Code web

Does this bug reproduce in GitHub Codespaces?

I did not test GitHub Codespaces

Are you accessing code-server over a secure context?

• I am using a secure context.

Notes

No response