Since #256 delivered, the node-engine judges every read-write access by the path's group alone and
states six media modules unhealthy on ace, though they write their folders as the owner; every
delivery there fails its gate (hq issue 567). ADR 0325 replaces ADR 0312; until it is built, the
controller sends no grant, as before #256.
This reverts commit 3cfc121670.