#867: organization reads no longer take the registry writer lock; they
retry while the lock exists or the registry changed during the read.
#868: a broken organization is listed as invalid with a path-masked
reason instead of disappearing; the Board, header and picker show it,
and /api/orgs 503 carries the reason. Orgs the principal may not see and
archived orgs still give an empty list.
#869: a Console with no board says "No board", not "Board: null".
#866 (save-path validation at bus admission) is left out: it refused
documents the bus accepted before and needs a migration story first.
Every bus, business, cli and webui file run serially; failures are only
the known EISDIR node_modules-link files.
jason.woltje
0e9b2c505d