Anthropic Claude Agent SDK v0.3.271 adds omitClaudeMd subagent option
Anthropic released claude-agent-sdk-typescript v0.3.271, adding an optional omitClaudeMd flag to AgentDefinition so subagents can run without user, project, and local CLAUDE.md files while managed policy files still load. The release also fixes Windows session lookups on mapped and SUBST drives, sessionStore resume config loss, and removes persistent from MonitorInput.
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