Planning and assignment
Planning produces immutable or versioned artifacts that describe intended work, constraints, roles and admissible transitions. Assignment binds a role to an eligible agent under the current membership epoch and policy.
Planning is not execution authority. A plan can be rejected, superseded or recovered without granting permission to perform a protected effect.
Assignments should be treated as expiring operational state. Reassignment requires fresh eligibility checks and preserves the causal relationship to the original failure or expiry.