The Office (workspace D-66, D-68, D-73) needs a message bus: an address is
a topic named for an identity, owned by a tenant and a consumer. D-68 puts
it here, in core-api's own database, behind its own auth, following
src/domains/book/.
Migration 006 lands the whole schema by hand (down_revision="005"):
scribe_addresses (owner_tenant + name primary key — no surrogate id, since
no route ever references an address except by name), scribe_messages
(retained; a generated tsvector search column + GIN index on subject/body,
and a GIN index on the topics array for history's lookup), and
scribe_mailbox_entries (one row per recipient address per message, unique
on address+message_id). No data: seeding `jeroen` and `tower-control` is a
deploy step through `register`, not this migration.
Routes, every one behind require_caller("office", "user"), tenant from the
caller (T-4):
- register/list addresses — register is idempotent for the same consumer,
409 address_taken for another consumer in the tenant; list marks which
addresses the caller's consumer owns.
- send — `from` is always the caller's own identity, stamped server-side,
never read from the body; 403 identity_not_owned if that identity is not
a registered address owned by the caller's consumer; 404 unknown_address
(naming the missing ones) if any recipient does not exist in the tenant;
writes one mailbox entry per recipient.
- mailbox / find — the caller's own identity's entries (mailbox: unread
first; find: full text via websearch_to_tsquery), both requiring the
identity be owned by the caller's consumer.
- history — the retained messages sent to an address, oldest first;
reading never consumes or marks, and reads scribe_messages directly
rather than joining through mailbox entries.
- mark / tag / untag — share one PATCH route; an entry outside the
caller's tenant, or addressed to an identity the caller isn't reading
as, answers 404 not_found — indistinguishable from a nonexistent entry.
Every query filters on the caller's tenant (D-73): an address or message
in another tenant answers exactly like one that does not exist, so no id
is ever confirmed across that boundary (test_scribe.py::TestTenantIsolation,
including two tests proving the tenant filter is load-bearing even when
the same address *name* legitimately exists, differently owned, in two
tenants — not just when the caller's own identity is unregistered there).
Messaging only this round: groups, subscriptions, the notification matrix
and delivery are explicitly not built (workspace T-176) — the schema
already carries what `topics`/`tags` need for them.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
