EVENT HISTORY
A record that supports the decision.
What was planned
The accepted contract, generated plan, and admitted capability set.
What was invoked
Capability, normalized result, cost, and idempotency key.
What changed
Contract versions, corrections, human decisions, and the reasons behind them.
What was delivered
The immutable package and the acceptance result.
A restart should not erase the reasoning that came before it.
Because state is derived from an event history, LibreTask can reconstruct the thread and continue from the last durable point.