Agentic rollout API

Agentic rollout uses an agent function to run task-specific interaction and return trajectory turns for training.

The training CLI accepts the agent entry point through --agent-fn:

areno train \
  --agent-fn examples/agentic/tictactoe/run_agent.py \
  --reward-fn-path examples/agentic/tictactoe/reward.py \
  --algo gspo

The agent function can use the local OpenAI-compatible proxy to call the model and can execute tools or environment logic between model turns.

See Training CLI reference for current flags and TicTacToe agentic RL for the smallest runnable recipe.