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Subagents can now be restricted to only use 'Managed' instruction sources
What
A new managedInstructionsOnly option filters the CLAUDE.md and other instruction sources given to a subagent (a separate Claude instance spawned to handle part of a task) down to only entries whose type is "Managed". The flag is threaded through subagent spawn options so it can be set when a subagent is created.
Why
This allows a subagent to be limited to centrally managed instructions only, excluding other instruction sources that might otherwise be picked up.
Names in the bundlemanagedInstructionsOnly