Counterfactual Intervention Lattice Format

A CIL record is one action intervention from a shared initial state. Records that share group_id form one lattice.

Required fields:

schema_version
group_id
state
observation0
instruction
goal
action
next_observation
reward
structured_effect
failure_type
explanation
metadata

JSONL shards should preserve complete groups. A group may exceed the target shard size, but it should never be split across shards unless an explicit future streaming mode opts into that tradeoff.