969
// fork parameter and fall through to the regular create path.
970
if (config?.fork) {
971
>
const sourceState = this._stateManager.getSessionState(config.fork.session.toString());
agentService.ts
972
>
const sourceTurns = sourceState?.turns.slice(0, config.fork.turnIndex + 1) ?? [];
973
>
if (sourceTurns.length === 0) {
974
config = { ...config, fork: undefined };
976
>
const turnIdMapping = new Map<string, string>();
977
>
for (const t of sourceTurns) {
978
>
turnIdMapping.set(t.id, generateUuid());
979
>
}
980
>
// The SDK fork boundary must be a concrete (SDK-backed) turn.
981
>
// When the client forked at a host-injected local turn
982
>
// (`/rename` / `!command`), redirect the agent to the preceding
983
>
// concrete turn while still seeding the local turns up to the
984
>
// fork point into the new session's protocol state below.
985
>
const concreteForkTurnId = this._localTurns.resolveConcreteTurnId(buildDefaultChatUri(config.fork.session).toString(), config.fork.turnId);
986
>
config = {
987
>
...config,
988
>
fork: { ...config.fork, turnIdMapping, ...(concreteForkTurnId !== undefined ? { turnId: concreteForkTurnId } : {}) },
989
>
};
990
>
}
991
>
}
992
993
// When importing a conversation, assign fresh UUID turn ids up front so