pub async fn record_sidechain_transcript(
session_id: &str,
messages: &[Message],
agent_id: &str,
starting_parent_uuid: Option<String>,
) -> Result<(), AgentError>Expand description
Record a sidechain (subagent) transcript message.
Mirrors TS recordSidechainTranscript(messages, agentId?, startingParentUuid?).
Writes messages to the session’s sidechain subdirectory.