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An extended question mode is gated behind an env var and off by default.
Setting the CLAUDE_CODE_QUESTION_EXTENDED environment variable now enables an "extended questions" mode for the AskUserQuestion preview feature, via host.launchOptions.replaceExtendedQuestionsEnabled(true). It only applies when the entrypoint is one of sdk-ts, sdk-py, sdk-cli, local-agent, claude-desktop, or claude-desktop-3p, or when the client type resolves to remote; it is off by default with no fallback-true case, and it is stripped from subprocess and MCP-child environments so it won't propagate.
Names in the bundleCLAUDE_CODE_QUESTION_EXTENDED
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New in this build: CLAUDE_CODE_QUESTION_EXTENDED