The import of slice 3 (ADR 0275) was checked against every folder: no report changed since the
commit it read, and the tracker holds each report's status, owner, fix, design amendment, replay
and closing day. The keys are removed from all 361 reports, cycle.py refuses them in any report,
and the playbooks, skills and READMEs that still pointed at them name the tracker instead.
A group of the controller, the node-engine and the lab, each ready, was
refused as a cycle: built by put the controller's member first, engine
before controller the node-engine's. ADR 0249 ranks the rules (declared,
then built by and version skew, then engine before controller) and
supersedes ADR 0239's sentence that made a declared order against an
inferred one a cycle; design 47 says the precedence. Resolved by
mesh-controller #134 and mesh-catalog #119, replay R309 (mesh-lab #64).
jochen