Clarify when to wait for starting environments - #33636
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## Why An execution environment marked `starting` is not yet usable, but unrelated work can continue while it becomes ready. ## What changed - Add developer guidance that explains execution-environment isolation and the resources that become available after startup. - Tell the model to wait only when the current task needs the starting environment. - Retain the guidance across world-state updates without duplicating it in request history. ## Testing - Cover world-state transitions, history retention, rollback handling, and deferred-environment request deduplication. GitOrigin-RevId: f12f9204d4cbddce50a70eb0998beb6b66cd2fa9
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Clarify when to wait for starting environments
Why
An execution environment marked
startingis not yet usable, but unrelated work can continue while it becomes ready.What changed
Testing