feat: specialist_invite API + user lookup. Fixes EventHub/EventHubBack#55

include/records.hrl

@@ -125,6 +125,22 @@
   updated_at      :: calendar:datetime()
 }).
 
+%% ------------------- Приглашения специалистов ------------------------
+%% PK = id. Pending-уникальность (calendar + user|email) — в logic.
+-record(specialist_invite, {
+  id                :: binary(),
+  calendar_id       :: binary(),
+  inviter_id        :: binary(),
+  invitee_user_id   :: binary(),              % <<>> если ещё неизвестен
+  invitee_email     :: binary(),              % <<>> если только user_id
+  name              :: binary(),
+  specialization    :: [binary()],
+  status            :: pending | accepted | declined | expired | cancelled,
+  token             :: binary(),
+  created_at        :: calendar:datetime(),
+  expires_at        :: calendar:datetime()
+}).
+
 -record(location, {
   address         :: binary(),
   lat             :: float(),
@@ -296,7 +312,8 @@
 -record(notification, {
   id              :: binary(),
   user_id         :: binary(),
-  type            :: booking_confirmed | event_reminder | event_cancelled | custom,
+  type            :: booking_confirmed | event_reminder | event_cancelled |
+                     specialist_invite | custom,
   title           :: binary(),
   body            :: binary(),
   is_read         :: boolean(),