fork_node_id.
That shared key is what makes tree-native observability
possible — telemetry inherits the same branching shape as your experiments.Forks
Branching off a snapshot to explore alternatives — the fork-tree DAG.
Because every sandbox is snapshottable, you can fork off a working
snapshot to explore an alternative — when a new model drops, you branch off a known-good state
instead of starting over. The forks form a fork-tree DAG, the spine of the whole system:
sandboxes, snapshots, and telemetry are all keyed by