Phase 28's in-game mail UI groups personal threads by the other party's race. To support that without an extra membership-listing RPC, the diplomail subsystem now: - accepts `recipient_race_name` on `POST /messages` and `POST /admin` (target=user) as an alternative to `recipient_user_id`; the service resolves it via the existing `Memberships.ListMembers(gameID, "active")` and rejects with `forbidden` when the matching member is no longer active; - snapshots `diplomail_messages.sender_race_name` at send time for every player sender (admin / system rows stay NULL). The UI keys per-race threading on this column. Schema, openapi, README, and a focused e2e test for the new path (happy path + dual / missing / unknown / kicked errors) land in this commit; the gateway + UI legs follow in subsequent commits on this branch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Backend migrations
Goose migrations embedded into the backend binary by embed.go. Applied
at startup before any listener opens (see internal/postgres).
Pre-production single-file rule
While the platform is not yet in production, every schema change goes
into the existing 00001_init.sql file rather than a new
00002_*-prefixed file. The intent is to keep the schema in one
canonical place so reviewers and developers do not have to reconstruct
the latest shape from a chain of incremental migrations.
Operationally this means that pulling a branch with schema changes requires a fresh database — the only consumer today is local development and integration tests, both of which spin up disposable Postgres instances.
Remove this rule before the first production deployment. From that point on every schema change must be a new migration file with a monotonically increasing prefix, and
00001_init.sqlbecomes immutable history.
If you need to make a change, edit 00001_init.sql directly. Down
migrations should still be kept in sync (they live at the bottom of the
file — currently a single DROP SCHEMA backend CASCADE).