hyperhive/hyperhive#2999 asked for an operator-facing page explaining
the job queue's node kinds in the abstract, without the coordinator's
implementation detail (leases, resource windows, module layout).
Add docs/jobq.md: what a queue row/step means, a plain-language table
of every node label an operator actually sees in the dashboard
(BU1LDS/R3BU1LD QU3U3 and swarm-ui's /jobs page both render the same
graph), and a rough shape for a typical rebuild.
Wire it into docs/README.md and the root CLAUDE.md reading-paths index
alongside coordinator.md. Add a pointer from coordinator.md's job-queue
section to the new page so the two don't try to explain the same thing
twice at different levels.
