Route the four "must mirror" READ_MESSAGES filters — REST
ListVisibleChannels, ws buildReady, reconnect replay
computeAllowedChannels, and hub RefreshChannelVisibility — through a
single permissions.Checker predicate so a drift can never leak a
private channel (audit A-2026-07-07 / backlog item 3).
- add permissions.Checker.VisibleChannelIDs + ChannelRef (skips dm,
fails closed, admin bypass via HasChannelPermBatch)
- delegate the three batch sites; RefreshChannelVisibility uses
HasChannelPerm instead of its inline EffectivePerms copy
- REST/WS agreement test asserting all three sites yield the identical
non-DM set across admin / member-with-deny / denied-everywhere
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The read side of channel visibility was already complete — channel_overrides
rows deny ReadMessages and every list/focus/send/voice path enforces them —
but nothing could write those rows. Add the missing write path and UI:
- db: UpsertChannelOverride / DeleteChannelOverride / ListChannelRoleOverrides
(roles LEFT JOIN overrides so the UI gets everything in one call)
- admin API: GET/PUT/DELETE /admin/api/channels/{id}/permissions[/{roleId}]
with unknown permission bits masked via the new permissions.AllPerms,
audit logging, and immediate permission-cache invalidation
- ws: Hub.RefreshChannelVisibility sends targeted channel_create /
channel_delete to connected clients after an override change, unsubscribes
hidden clients from the channel topic, and clears their focus. Sent outside
the sequenced replay path on purpose: a replayed channel_delete would be
filtered by the post-change allowed-channel set, inverting its audience.
- admin panel: per-channel Access modal (lock icon) with per-role
"Can access" checkboxes; unchecking writes deny = ReadMessages|ConnectVoice
Known limits (follow-ups): users offline during a revoke keep a stale
sidebar entry until their next fresh connect (server still denies access),
and users already in a voice channel are not kicked when it goes private.
Closes#93
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LwtnpHAoSFr1ZibQgQkNQK
Soundboard was never implemented — remove USE_SOUNDBOARD permission bit,
rate limiter, protocol entry, admin mockup reference, TODOS entry, and
all related test assertions.
- Add syncutil package with deadlock-detecting mutex (build-tag switchable)
- Add main_test.go TestMain scaffolding across all server packages
- Harden concurrency in ws, admin, auth, and updater packages
- Update CI workflow, go.mod/sum, Cargo.lock, and root changelogen tooling
