ADR 0593 §6: the provisioner, the assigner and the view read compositions
instead of composing, so the node's engine writes each one it makes to
its composition state: the wanted builds, every placed module at its
newest done build (so the plan exists before the want moves), each with
its provisioning plan, and a module refused alone with its refusal. A
key is written only when it differs, and kept while among the module's
five newest or named by a want. A placed module's trunk build landing
now makes a pass.
Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
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