Nodes, assignments, walks, builds and settings could be seen only by polling verbs, and a setting
changed with no event. Each becomes a record mirror: a bucket written from the store after the commit
and only when the value differs, one event per write, compared with the store on every self-check run
(D17, mirror-drifted, healer H6). The write-only-on-a-change rule from issue 326 now holds for every
bucket; the conditions bucket breaks it and issue 420 tracks that. The effort stays active for G1, G3
and the views.
jochen
f90b74bf26