feat: Sprint 6 — disappearing messages, group info, account deletion
- Disappearing messages: ttlSecs param on enqueue/batchEnqueue RPCs,
expires_at column (migration 007), server GC deletes expired messages,
/disappear command with human-friendly duration parsing (30m, 1h, 1d)
- Group info: /group-info shows type, members, MLS epoch; /rename
renames conversations; /members resolves usernames via resolveIdentity
- Account deletion: deleteAccount @23 RPC with transactional purge of
all user data (deliveries, keys, channels), session invalidation,
KT log preserved for auditability; /delete-account with confirmation
- Added epoch() accessor to GroupMember, enqueue_with_ttl client helper
All 35 server + 71 core + 14 E2E tests pass.
Christian Nennemann
fd21ea625c