Configure background ambient audio for subsequent user-simulator turns.
PR5 ships the script-step contract surface; the actual mixing happens in
the audio-effects subsystem (deferred). Calling this returns a no-op
ScriptStep that records the desired ambience on the executor state so
downstream PRs can pick it up.
Configure background ambient audio for subsequent user-simulator turns.
PR5 ships the script-step contract surface; the actual mixing happens in the audio-effects subsystem (deferred). Calling this returns a no-op ScriptStep that records the desired ambience on the executor state so downstream PRs can pick it up.