The auditor is a silent, read-only observer on every channel, but the
channel catalog (roboco/foundation/policy/communications.py) listed it
in write_roles for main-pm-board and board-private 'for parity' with the
legacy CHANNEL_ACCESS table, while the actual silent-observer rule was
enforced only at the say/dm guard (content_actions._NO_COMMS_ROLES) and
PermissionService.can_write_channel's auditor short-circuit.
That left the catalog-only enforcement path — the HTTP messaging route
(messages.py send_message -> validate_channel_access) — authorizing an
auditor write that both the say/dm guard and PermissionService would
have blocked. A reader of the catalog also believed the auditor could
post to those channels, which is false.
Fix: remove Role.AUDITOR from write_roles on both channels (main-pm
+ board remain writers; ceo remains a writer on board-private). The
auditor stays in read_roles, so its silent read is unchanged. silent_roles
is left empty (matches the announcements precedent: auditor reads via
read_roles, not the silent bucket) — the DB seed and silent_observers
field are untouched.
Logical-regression check: the auditor's read access on both channels
is byte-for-byte preserved (still in read_roles, so validate_channel_access
read returns True via the direct list); the legitimate writers (main-pm,
product-owner, head-marketing, ceo) are untouched; CHANNEL_ACCESS is
derived from the spec so the foundation/seed drift tests self-adjust;
PermissionService.can_write_channel already short-circuited auditor to
False everywhere, so no behavior change there; AUDITOR_SILENT_ACCESS is
unchanged (auditor not added to silent_roles -> no DB silent_observers
change -> no group-access behavior change); the say/dm _NO_COMMS_ROLES
guard is unchanged. Tests: 3 new in test_channel_access.py — auditor
write on main-pm-board/board-private now raises ChannelAccessDeniedError
(RED before: returned True), auditor read still True, main-pm/ceo still
write.
Renn F