Making Gemini CLI extensions easier to use

This article introduces extension settings for Gemini CLI, a new feature that automates extension configuration by prompting users for required values at installation time.

• •Extension authors define required settings (API keys, base URLs, project IDs) in gemini-extension.json using a settings array with name, description, envVar, and optional sensitive fields
• •Users are automatically prompted to provide values during installation, eliminating the need to manually export environment variables
• •Sensitive settings such as API keys and passwords are stored in the system keychain rather than plain text files
• •The new `gemini extensions config` command enables post-installation management, supporting both full interactive reconfiguration and targeted single-variable updates
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