fix(agents): Fixed issue with gemini extension installation

[DmitriyStoyanov]

Summary

For the moment when we try to install extension into codemie-gemini we face with error:

codemie-gemini extensions install "https://github.com/derailed-dash/browsermcp-ext"
Unknown argument: m
gemini extensions install <source> [--auto-update] [--pre-release]

Installs an extension from a git repository URL or a local path.

Positionals:
  source  The github URL or local path of the extension to install.                                   [string] [required]

Options:
  -d, --debug        Run in debug mode (open debug console with F12)                           [boolean] [default: false]
      --ref          The git ref to install from.                                                                [string]
      --auto-update  Enable auto-update for this extension.                                                     [boolean]
      --pre-release  Enable pre-release versions for this extension.                                            [boolean]
      --consent      Acknowledge the security risks of installing an extension and skip the confirmation prompt.
                                                                                               [boolean] [default: false]
  -h, --help         Show help                                                                                  [boolean]

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Changes

In some commands like extensions, health, during execution of gemini-cli model parameter -m is not required, so here we are not sending such parameter in such cases

After fix:

codemie-gemini extensions install "https://github.com/derailed-dash/browsermcp-ext"
Installing extension "browsermcp-extension".
This extension will run the following MCP servers:
  * browsermcp (local): npx -y @browsermcp/mcp@latest

The extension you are about to install may have been created by a third-party developer and sourced from a public repository. Google does not vet, endorse, or guarantee the functionality or security of extensions. Please carefully inspect any extension and its source code before installing to understand the permissions it requires and the actions it may perform.
Do you want to continue? [Y/n]: y
Extension "browsermcp-extension" installed successfully and enabled.

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Impact

Fixed issue with extension installation

Checklist

• Self-reviewed
• Manual testing performed
• Documentation updated (if needed)
• No breaking changes (or clearly documented)