A node away during the switch finds its last declaration on the stream; once every node's have names the
node-engine registered, no node reads one, so the stream and the nodes' consumers on it go, said once, and a raise
leaves them out (ADR 0539 clause 11).
With no plan left to take a done key in, a write of the builder's keys registers the new fingerprint, composes the
module's nodes and the bus's user list, and writes its grant, so the assigner's rules can name it (ADR 0539 clauses
5 and 7). The new controller composes every node at its start, and the controller it replaced at its own
fingerprint, the operator's way back (clause 10); the merge window's, silent sends' and building plans' buckets are
no longer asserted and are deleted once, each said as the event bucket-deleted (clause 13). The assigner may read
the compositions' digests, and a node-engine hears its backup holder's backed-up.
Each act that changed what a node runs now writes that node's compositions, and its wants follow by the assigner's
rules; a bus upgrade composes the bus's machines and answers the want the operator writes, since the assigner never
moves the bus (ADR 0539 clauses 5, 7 and 15). A node-engine may ask its own backup holder before a data module moves.
Every act that sent a declaration now writes compositions instead, by compare-and-set under the lease, and a
module's compositions are kept for its five newest fingerprints and whatever its want or have names (ADR 0539
clauses 1 to 5 and 14). A module the mesh provides itself, which no want can name, rides in the node's own.
jschoubben