feat(reservations): assign trip members and guests to bookings — backend (schema, migration, travelers endpoint)

shared/src/reservation/reservation.schema.ts

@@ -34,6 +34,20 @@ export const reservationEndpointSchema = z.object({
 });
 export type ReservationEndpoint = z.infer<typeof reservationEndpointSchema>;
 
+/**
+ * A traveler assigned to a reservation — a trip member or a named guest (both are
+ * `users` rows; a guest carries is_guest=1). Mirrors the budget member read shape
+ * without the cost-split fields; joined + avatar-resolved in reservationService.
+ */
+export const reservationTravelerSchema = z.object({
+  user_id: z.number(),
+  username: z.string(),
+  avatar_url: z.string().nullable().optional(),
+  avatar: z.string().nullable().optional(),
+  is_guest: z.number().nullable().optional(),
+});
+export type ReservationTraveler = z.infer<typeof reservationTravelerSchema>;
+
 /**
  * Endpoints as accepted on a WRITE (create/update body `endpoints` array). This
  * pins the STRUCTURE (role must be a known value, name/code are strings) so a
@@ -102,6 +116,8 @@ export const reservationSchema = z.object({
   accommodation_end_day_id: z.number().nullable().optional(),
   day_positions: z.record(z.string(), z.number()).nullable().optional(),
   endpoints: z.array(reservationEndpointSchema).optional(),
+  // Trip members / named guests this booking is for (#1517). Joined in listReservations.
+  travelers: z.array(reservationTravelerSchema).optional(),
 });
 export type Reservation = z.infer<typeof reservationSchema>;
 
@@ -139,6 +155,12 @@ export type ReservationCreateRequest = z.infer<typeof reservationCreateRequestSc
 export const reservationUpdateRequestSchema = open;
 export type ReservationUpdateRequest = z.infer<typeof reservationUpdateRequestSchema>;
 
+/** Assign trip members/guests to a reservation (mirrors budget's PUT :id/members). */
+export const reservationTravelersRequestSchema = z.object({
+  user_ids: z.array(z.number()),
+});
+export type ReservationTravelersRequest = z.infer<typeof reservationTravelersRequestSchema>;
+
 export const reservationPositionsRequestSchema = z.object({
   positions: z.array(z.object({ id: z.number(), day_plan_position: z.number() })),
   day_id: z.union([z.number(), z.string()]).nullable().optional(),