- quota.measured() context manager folds the before/after units diff that the
manual sync routes each re-spelled (also makes quota_remaining_today consistent).
- sync pause/resume now use Depends(admin_user) instead of inline role checks.
- is_messageable_user() unifies the 'real, active, non-suspended human' rule that
was encoded three ways (WS auth, send recipient, and the SQL _messageable()).
The live-message push now carries both parties, so an incoming message opens
that conversation's dock window if it's closed, or flashes it once if it's
already open (expanded or minimised, without disturbing the minimised state) —
only for messages from someone else, never your own echo.
Dock state (open windows + minimised state) is persisted per user, so a reload
restores exactly what was open, minimised, or closed.
Private user-to-user messages are end-to-end encrypted: the server only ever
stores ciphertext + iv and acts as a key directory (public keys) plus an opaque
store for each user's private key, wrapped client-side with a passphrase the
server never sees — so not even an admin can read a conversation. A separate
kind=system message (plaintext, no sender) powers a server-authored Siftlode
welcome shown on first open, reusable later for announcements.
- models: rework Message (kind, nullable sender/body, ciphertext+iv) + MessageKey;
migrations 0026 (table) + 0027 (E2EE rework).
- routes/messages.py: key directory/blob endpoints, ciphertext send, conversations
+ threads (system + user), lazy welcome, all gated by require_human.
- realtime.py: in-process WebSocket connection registry; /ws delivers sent
messages to a user's open tabs instantly (sync-callable push, single-process).
